Thursday, 1 March 2018 - Seasonal Climate Summary for Tasmania - Product code IDCKGC27R0
Tasmania in summer 2017-18: A warm season
Warm weather for most of December and January more than made up for a long run of cool days in February and a few other unseasonably cold days. Total summer rain was below average in the northwest but above average in parts of the east. Thunderstorms and heavy showers gave some locally high falls, notably at the start of December, the end of January, and in late February
Dry in the northwest, wet in the east
- Total summer rainfall was below average in the northwest and on King Island, but above average in the east and on Flinders Island
- Tasmania's total rainfall for the season was 4% below average
- December was wet in the eastern half following some heavy rain and thunderstorms in the first week, but January was generally dry until the end of the month, and for much of the State, February's rain fell in a few intense bursts
- A few sites had their highest summer daily rainfall on record, either at the start of December or the end of January
- Flinders Island Airport had its highest total summer rainfall for many years
- King island Airport reported its driest summer on record, and other sites on King Island had their lowest total summer rainfall for several decades
Warm overall
- Warm weather dominated for most of December and January, but there was a long run of cool days in February
- Temperatures for all of the State were above average for summer as a whole, with many areas well above average
- Temperatures were above average overall, with the State mean temperature fifth-warmest for summer at 1.24 °C above average, the mean maximum temperature sixth-warmest at 1.39 °C above average, and the mean minimum temperature fifth-warmest at 1.08 °C above average
- The warmest weather was in January, including the 19th when larapuna / Eddystone Point and Bicheno had their highest temperature on record
- The mornings of 28 and 29 January were very warm, with several sites in the north having warmest night (highest daily minimum temperature) on record
- There were some unseasonably cool days, most notably on 3 December when some sites with short periods of record had their coldest summer day on record
- The cool weather in February ensured that only a few sites had their highest summer mean daily maximum temperature on record, their highest summer mean daily minimum temperature on record or their highest summer mean temperature on record
A warm summer for Hobart
- The mean daily maximum temperature for Hobart (Ellerslie Road) was 22.9 °C, which is 1.6 °C above the long-term average of 21.3 °C
- The hottest day was 36.7 °C on 28 January, and the coolest day was on 3 December when the temperature reached just 12.9 °C
- The mean daily minimum temperature for Hobart (Ellerslie Road) was 13.5 °C, which is 1.9 °C above the long-term average of 11.6 °C
- The coldest morning was 8.4 °C on 31 Jan, and the warmest morning was on 29 January when the minimum temperature was 23.9 °C
- Total rainfall for Hobart (Ellerslie Road) was 158.4 mm, a little above the long-term average of 143.5 mm
Further information
- Media
- media@bom.gov.au (03) 9669 4057
- Enquiries
- helpdesk.climate@bom.gov.au
Extremes Maps Records Summaries Important notes the top
| Extremes in summer 2017-18 | |
|---|---|
| Hottest day | 39.7 °C at St Helens Aerodrome on 19 Jan 2018 |
| Warmest days on average | 25.0 °C at Cressy Research Station |
| Coolest days on average | 13.8 °C at kunanyi (Mount Wellington Pinnacle) |
| Coldest day | 2.3 °C at kunanyi (Mount Wellington Pinnacle) on 3 Dec 2017 |
| Coldest night | -2.3 °C at Liawenee on 17 Dec 2017 |
| Coolest nights on average | 5.0 °C at kunanyi (Mount Wellington Pinnacle) |
| Warmest nights on average | 15.4 °C at Swan Island |
| Warmest night | 23.9 °C at Campania (Kincora), Hobart (Ellerslie Road) and Melton Mowbray (North Stockman) on 29 Jan 2018 |
| Warmest on average overall | 18.8 °C at Launceston (Ti Tree Bend) |
| Coolest on average overall | 9.4 °C at kunanyi (Mount Wellington Pinnacle) |
| Wettest overall | 724.4 mm at Mount Read |
| Driest overall | 59.8 mm at King Island Airport |
| Wettest day | 102.0 mm at Pyengana (Forest Lodge Road) on 3 Dec 2017 |
| Strongest wind gust | 150 km/h at Hogan Island on 14 Feb 2018 |
Extremes Maps Records Summaries Important notes the top
| Maps | |||
|---|---|---|---|
| Observed | Anomaly | Decile rank | |
| Total rainfall |
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| Mean daily maximum temperatures |
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| Mean daily minimum temperatures |
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Click on a map to show it full size in a pop-up window
| Record highest summer daily rainfall | ||||||
|---|---|---|---|---|---|---|
|
New record (mm) |
Old record |
Years of record |
||||
| York Plains (Handroyd) | 80.0 | on 30 Jan 2018 | 76.2 | on 5 Feb 1938 | 103 | |
| Llewellyn (South Esk River) | 63.6 | on 3 Dec 2017 | 51.8 | on 5 Feb 2010 | 27 | |
| Mount Seymour | 53.0 | on 3 Dec 2017 | 39.0 | on 29 Jan 2016 | 27 | |
| Ross (Macquarie River) | 49.0 | on 3 Dec 2017 | 46.6 | on 16 Feb 2014 | 25 | |
| Lackrana (Fern Hill) | 87.0 | on 3 Dec 2017 | 71.0 | on 14 Dec 2008 | 24 | |
| Mileara Park | 97.8 | on 3 Dec 2017 | 95.0 | on 26 Jan 1998 | 22 | |
| Birralee Creek | 68.2 | on 30 Jan 2018 | 62.4 | on 16 Feb 2014 | 20 | |
| Glenfern (Homebush) | 37.6 | on 4 Dec 2017 | 33.0 | on 14 Jan 2015 | 20 | |
| Mount Dromedary | 83.2 | on 4 Dec 2017 | 44.6 | on 14 Jan 2015 | 20 | |
| Record highest summer total rainfall | |||||
|---|---|---|---|---|---|
|
New record (mm) |
Old record |
Years of record |
Average for summer |
||
| Mount Seymour | 217.2 | 199.0 | in 2014 | 22 | 117.3 |
| Llewellyn (South Esk River) | 211.0 | 163.0 | in 2001 | 21 | 103.1 |
| Highest summer total rainfall for at least 20 years | |||||
|---|---|---|---|---|---|
|
Observed (mm) |
Most recent higher |
Average for summer |
|||
| Flinders Island Airport | 230.4 | 298.4 | in 1985* | 143.4 | |
| Levendale | 242.8 | 445.8 | in 1995 | 182.2 | |
| Rotherwood | 195.0 | 274.0 | in 1995 | 131.2 | |
| Whitemark Post Office | 235.4 | 245.6 | in 1993* | 142.3 | |
| York Plains (Handroyd) | 203.6 | 275.8 | in 1995 | 135.9 | |
| Richmond (Strathayr) | 188.4 | 296.2 | in 1995* | 130.3 | |
| Seven Mile Beach (Royal Hobart Golf Club | 187.2 | 271.4 | in 1995* | 131.3 | |
* note: there are gaps in the historical record at this site, so it is possible a higher value has gone unreported
| Record lowest summer total rainfall | |||||
|---|---|---|---|---|---|
|
New record (mm) |
Old record |
Years of record |
Average for summer |
||
| King Island Airport | 59.8 | 60.0 | in 1983 | 43 | 117.3 |
| Lowest summer total rainfall for at least 20 years | |||||
|---|---|---|---|---|---|
|
Observed (mm) |
Most recent lower |
Average for summer |
|||
| City of Melbourne Bay | 82.6 | 68.5 | in 1983 | 146.5 | |
| Waratah (Mount Road) | 114.8 | 108.5 | in 1960* | 340.1 | |
| Naracoopa | 83.0 | 73.6 | in 1994 | 139.5 | |
* note: there are gaps in the historical record at this site, so it is possible a lower value has gone unreported
| Record highest summer temperature | ||||||
|---|---|---|---|---|---|---|
|
New record (°C) |
Old record |
Years of record |
Average for summer |
|||
| larapuna (Eddystone Point) | 38.2 | on 19 Jan 2018 | 36.5 | on 4 Jan 2013 | 108 | 20.4 |
| Bridport (Sea View Villas) | 32.0 | on 19 Jan 2018 | 31.7 | on 12 Dec 1998 | 24 | 21.4 |
| Record lowest summer daily maximum temperature | ||||||
|---|---|---|---|---|---|---|
|
New record (°C) |
Old record |
Years of record |
Average for summer |
|||
| Ross (The Boulevards) | 12.9 | on 3 Dec 2017 | 13.1 | on 27 Feb 1996 | 25 | 23.8 |
| Melton Mowbray (North Stockman) | 11.8 | on 3 Dec 2017 | 12.2 | on 4 Dec 2012 | 22 | 23.1 |
| Friendly Beaches | 13.7 | on 3 Dec 2017 | 13.9 | on 4 Dec 2011 | 21 | 22.6 |
| Record highest summer mean daily maximum temperature | |||||
|---|---|---|---|---|---|
|
New record (°C) |
Old record |
Years of record |
Average for summer |
||
| Fingal (Legge Street) | 24.5 | 24.4 | in 2000 | 31 | 22.7 |
| Bridport (Sea View Villas) | 22.9 | 22.8 | in 2015 | 23 | 21.4 |
| King Island Airport | 21.9 | 21.6 | in 2015 | 22 | 20.4 |
| Record highest summer daily minimum temperature | ||||||
|---|---|---|---|---|---|---|
|
New record (°C) |
Old record |
Years of record |
Average for summer |
|||
| larapuna (Eddystone Point) | 20.7 | on 28 Jan 2018 | 20.0 | on 16 Feb 1982 | 108 | 13.0 |
| Butlers Gorge | 19.4 | on 29 Jan 2018 | = 19.4 | on 20 Jan 1959 | 57 | 6.0 |
| Burnie (Round Hill) | 22.1 | on 28 Jan 2018 | 21.3 | on 30 Jan 1988 | 54 | 12.4 |
| Marrawah | 21.5 | on 29 Jan 2018 | 20.8 | on 21 Jan 1997 | 47 | 11.7 |
| Bicheno (Council Depot) | 19.5 | on 8 Feb 2018 | 19.4 | on 21 Feb 2010 | 44 | 12.6 |
| Wynyard Airport | 21.3 | on 28 Jan 2018 | 20.2 | on 22 Feb 2007 | 33 | 10.8 |
| Fingal (Legge Street) | 20.9 | on 28 Jan 2018 | = 20.9 | on 30 Jan 2009 | 32 | 9.7 |
| Lake St Clair National Park | 19.3 | on 29 Jan 2018 | 18.5 | on 6 Jan 1997 | 28 | 5.8 |
| Devonport Airport | 22.0 | on 28 Jan 2018 | 20.0 | on 27 Feb 2012 | 27 | 11.9 |
| Maydena Post Office | 19.8 | on 29 Jan 2018 | 18.9 | on 4 Feb 2010 | 26 | 8.5 |
| Sheffield School Farm | 19.5 | on 29 Jan 2018 | 19.4 | on 30 Jan 2009 | 22 | 10.2 |
| Smithton Aerodrome | 22.2 | on 29 Jan 2018 | 20.6 | on 26 Feb 2012 | 22 | 10.8 |
| Low Head | 21.4 | on 29 Jan 2018 | 20.7 | on 4 Feb 2010 | 21 | 13.9 |
| Ouse Fire Station | 21.1 | on 29 Jan 2018 | 20.0 | on 30 Dec 2002 | 20 | 9.6 |
| Record highest summer mean daily minimum temperature | |||||
|---|---|---|---|---|---|
|
New record (°C) |
Old record |
Years of record |
Average for summer |
||
| Flinders Island Airport | 14.4 | 14.3 | in 2006 | 54 | 13.0 |
| King Island Airport | 13.3 | 12.9 | in 1998 | 22 | 12.2 |
| Luncheon Hill (Forestry) | 11.2 | 10.8 | in 2015 | 20 | 10.0 |
| Highest summer mean daily minimum temperature for at least 20 years | |||||
|---|---|---|---|---|---|
|
Observed (°C) |
Most recent higher |
Average for summer |
|||
| Marrawah | 12.9 | 13.0 | in 1973 | 11.7 | |
| Record highest summer mean temperature | |||||
|---|---|---|---|---|---|
|
New record (°C) |
Old record |
Years of record |
Average for summer |
||
| Fingal (Legge Street) | 17.6 | = 17.6 | in 2015 | 31 | 16.2 |
| King Island Airport | 17.6 | 17.2 | in 2015 | 22 | 16.3 |
Extremes Maps Records Summaries Important notes the top
| Summary statistics for summer 2017-18 | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Maximum temperatures (°C) |
Minimum temperatures (°C) |
Rainfall (millimetres) |
||||||||||
| Mean for summer 2017-18 |
Diff from average |
Highest for summer 2017-18 |
Mean for summer 2017-18 |
Diff from average |
Lowest for summer 2017-18 |
Total for summer 2017-18 |
Average for summer |
Rank of summer 2017-18 |
Fraction of summer average |
|||
| Northern (district 91) | ||||||||||||
| Bridport (Sea View Villas) | 22.9 | +1.5 | 32.0 | 19 Jan 2018 | 13.1 | +0.6 | 7.5 | 14 Jan 2018 | 101.9 | 129.6 | low | 79% |
| Cape Grim | 19.8 | 27.0 | 28 Jan 2018 | 14.0 | 9.9 | 1 Feb 2018 | 86.0 | |||||
| Cape Grim BAPS (Comparison) | 19.8 | +1.1 | 26.8 | 27 Jan 2018 | 14.0 | +1.1 | 9.9 | 1 Feb 2018 | 88.0 | 115.4 | low | 76% |
| Cressy Research Station | 25.0 | +0.7 | 35.5 | 19 Jan 2018 | 10.8 | +1.0 | 3.1 | 1 Feb 2018 | 137.4 | 106.0 | average | 130% |
| Devonport Airport | 22.2 | +1.3 | 27.5 | 28 Jan 2018 | 13.0 | +1.1 | 5.4 | 14 Jan 2018 | 112.5 | 132.3 | average | 85% |
| Launceston (Ti Tree Bend) | 24.9 | +1.0 | 34.2 | 19 Jan 2018 | 12.7 | +0.9 | 6.5 | 14 Jan 2018 | 148.5 | 125.0 | high | 119% |
| Launceston Airport | 24.5 | +0.4 | 36.2 | 19 Jan 2018 | 10.7 | +0.4 | 4.7 | 14 Jan 2018 | 176.6 | 115.5 | v high | 153% |
| Low Head | 21.0 | +0.8 | 27.3 | 15 Jan 2018 | 14.8 | +0.9 | 8.8 | 3 Dec 2017 | 111.6 | 120.0 | average | 93% |
| Luncheon Hill (Forestry) | 21.0 | +0.8 | 32.4 | 28 Jan 2018 | 11.2 | +1.2 | 5.6 | 8 Dec 2017 | 184.2 | 218.9 | average | 84% |
| Marrawah | 21.0 | +1.2 | 30.5 | 28 Jan 2018 | 12.9 | +1.2 | 8.2 | 1 Feb 2018 | 118.2 | 155.3 | low | 76% |
| Scottsdale (West Minstone Road) | 22.7 | +0.4 | 36.5 | 19 Jan 2018 | 11.6 | +1.2 | 6.2 | 1 Feb 2018 | 163.4 | 162.6 | average | 100% |
| Sheffield School Farm | 22.1 | +0.9 | 34.4 | 19 Jan 2018 | 10.9 | +0.7 | 3.7 | 1 Feb 2018 | 150.6 | 160.3 | average | 94% |
| Smithton Aerodrome | 22.4 | +1.3 | 31.1 | 19 Jan 2018 | 11.3 | +0.5 | 3.0 | 8 Dec 2017 | 100.6 | 132.9 | low | 76% |
| Wynyard Airport | 22.7 | +1.7 | 33.8 | 19 Jan 2018 | 11.9 | +1.1 | 4.5 | 21 Dec 2017 | 131.4 | 154.4 | average | 85% |
| East Coast (district 92) | ||||||||||||
| Bicheno (Council Depot) | 22.1 | +1.1 | 30.4 | 14 Dec 2017 | 13.7 | +1.1 | 8.2 | 3 Dec 2017 | 221.4 | 180.5 | high | 123% |
| Fingal (Legge Street) | 24.5 | +1.8 | 39.2 | 19 Jan 2018 | 10.6 | +0.9 | 2.7 | 27 Feb 2018 | 175.8 | 133.4 | high | 132% |
| Friendly Beaches | 23.9 | +1.3 | 36.5 | 19 Jan 2018 | 13.6 | +0.9 | 8.4 | 27 Feb 2018 | 238.2 | 174.7 | high | 136% |
| Lake Leake (Elizabeth River) | 20.3 | +1.5 | 31.6 | 28 Jan 2018 | 8.7 | +0.8 | 0.0 | 1 Feb 2018 | 176.8 | 170.5 | average | 104% |
| larapuna (Eddystone Point) | 22.9 | +2.5 | 38.2 | 19 Jan 2018 | 14.5 | +1.5 | 8.8 | 31 Jan 2018 | 168.0 | 151.5 | average | 111% |
| Maria Island (Point Lesueur) | 21.2 | +0.4 | 28.6 | 6 Jan 2018 | 14.2 | +1.0 | 7.9 | 1 Feb 2018 | 216.0 | 144.5 | high | 149% |
| Orford (Aubin Court) | 22.5 | +1.0 | 33.0 | 28 Dec 2017 | 12.9 | +1.4 | 6.3 | 1 Feb 2018 | 209.0 | 158.0 | high | 132% |
| St Helens Aerodrome | 23.2 | +1.3 | 39.7 | 19 Jan 2018 | 13.6 | +0.8 | 8.1 | 3 Dec 2017 | 208.2 | 173.3 | average | 120% |
| Swan Island | 21.6 | +1.1 | 28.0 | 28 Jan 2018 | 15.4 | +0.9 | 9.8 | 3 Dec 2017 | 153.0 | 132.8 | average | 115% |
| Swansea (Francis Street) | 22.7 | 36.5 | 19 Jan 2018 | 12.6 | 5.8 | 27 Feb 2018 | 148.2 | |||||
| Midlands (district 93) | ||||||||||||
| Ross (The Boulevards) | 24.7 | +0.9 | 36.3 | 19 Jan 2018 | 10.9 | +0.9 | 2.5 | 16 Jan 2018 | 146.2 | 121.5 | high | 120% |
| Southeast (district 94) | ||||||||||||
| Cape Bruny (Cape Bruny) | 20.4 | +1.0 | 32.2 | 28 Jan 2018 | 12.4 | +0.7 | 7.5 | 31 Jan 2018 | 169.4 | 157.0 | average | 108% |
| Cape Bruny Lighthouse | 19.8 | +1.8 | 30.5 | 28 Jan 2018 | 12.7 | +1.5 | 7.0 | 31 Dec 2017 | 156.4 | 192.8 | average | 81% |
| Dennes Point | 21.7 | 32.3 | 6 Jan 2018 | 13.3 | 8.3 | 31 Jan 2018 | 159.6 | |||||
| Dover | 21.8 | +1.5 | 36.0 | 28 Jan 2018 | 10.7 | +0.9 | 5.6 | 8 Dec 2017 | 208.6 | 174.3 | high | 120% |
| Dunalley (Stroud Point) | 22.0 | 30.8 | 6 Jan 2018 | 14.0 | 6.9 | 31 Jan 2018 | ||||||
| Grove (Research Station) | 22.8 | +0.5 | 38.6 | 28 Jan 2018 | 10.0 | +0.9 | 3.5 | 14 Jan 2018 | 181.8 | 156.9 | high | 116% |
| Hobart (Ellerslie Road) | 22.9 | +1.6 | 36.7 | 28 Jan 2018 | 13.5 | +1.9 | 8.4 | 31 Jan 2018 | 158.4 | 143.6 | average | 110% |
| Hobart Airport | 23.3 | +1.4 | 36.5 | 28 Jan 2018 | 13.1 | +1.4 | 6.4 | 27 Feb 2018 | 166.4 | 128.7 | high | 129% |
| kunanyi (Mount Wellington Pinnacle) | 13.8 | +1.0 | 28.7 | 28 Jan 2018 | 5.0 | +0.6 | -1.4 | 31 Jan 2018 | 238.2 | 260.1 | average | 92% |
| Maatsuyker Island Lighthouse | 17.5 | +0.8 | 30.5 | 28 Jan 2018 | 11.7 | +1.2 | 6.9 | 31 Jan 2018 | 163.4 | 237.7 | low | 69% |
| Melton Mowbray (North Stockman) | 23.3 | +0.2 | 37.6 | 28 Jan 2018 | 10.8 | +0.9 | 3.1 | 16 Jan 2018 | 138.4 | 104.5 | high | 132% |
| Tasman Island | 18.1 | +0.6 | 28.0 | 18 Jan 2018 | 12.1 | +1.0 | 6.9 | 31 Jan 2018 | 211.6 | 175.4 | average | 121% |
| Tunnack Fire Station | 21.9 | +1.0 | 34.7 | 28 Jan 2018 | 1.3 | 16 Jan 2018 | 186.8 | 141.9 | high | 132% | ||
| Derwent Valley (district 95) | ||||||||||||
| Bushy Park (Bushy Park Estates) | 24.6 | +1.2 | 39.4 | 28 Jan 2018 | 10.6 | +0.9 | 3.4 | 16 Jan 2018 | 127.2 | 126.0 | average | 101% |
| Maydena Post Office | 22.0 | +0.6 | 36.5 | 28 Jan 2018 | 9.2 | +0.7 | 1.5 | 20 Feb 2018 | 208.6 | 211.0 | average | 99% |
| Ouse Fire Station | 24.7 | +0.1 | 38.7 | 28 Jan 2018 | 10.2 | +0.6 | 2.2 | 16 Jan 2018 | 103.4 | 93.5 | average | 111% |
| Central Plateau (district 96) | ||||||||||||
| Butlers Gorge | 19.2 | +1.1 | 32.6 | 28 Jan 2018 | 6.6 | +0.6 | 0.4 | 17 Dec 2017 | 326.0 | 301.1 | average | 108% |
| Liawenee | 18.7 | +0.9 | 29.3 | 19 Jan 2018 | 5.3 | +0.5 | -2.3 | 17 Dec 2017 | 132.8 | 153.7 | average | 86% |
| West Coast (district 97) | ||||||||||||
| Cape Sorell | 20.1 | +2.1 | 32.0 | 28 Jan 2018 | 13.0 | +1.4 | 8.4 | 31 Jan 2018 | 193.0 | 215.9 | average | 89% |
| Hartz Mountain (Keoghs Pimple) | 16.9 | +0.2 | 34.1 | 28 Jan 2018 | 7.2 | +0.7 | 0.5 | 31 Jan 2018 | 257.2 | 202.1 | high | 127% |
| Low Rocky Point | 19.4 | 32.3 | 19 Dec 2017 | 12.1 | 7.6 | 5 Dec 2017 | 243.6 | 240.6 | average | 101% | ||
| Scotts Peak Dam | 21.0 | +0.7 | 37.7 | 28 Jan 2018 | 9.5 | +0.6 | 4.0 | 31 Jan 2018 | 300.2 | 319.9 | low | 94% |
| Strahan Aerodrome | 21.4 | +0.9 | 35.9 | 28 Jan 2018 | 11.4 | +1.0 | 5.6 | 16 Jan 2018 | 293.6 | 244.1 | high | 120% |
| Warra | 19.2 | +0.6 | 35.1 | 28 Jan 2018 | 7.9 | +0.1 | 0.5 | 16 Jan 2018 | 292.2 | 320.3 | average | 91% |
| King Island (district 98) | ||||||||||||
| King Island Airport | 21.9 | +1.5 | 34.7 | 28 Jan 2018 | 13.3 | +1.1 | 6.6 | 5 Feb 2018 | 59.8 | 117.3 | lowest | 51% |
| Flinders Island (district 99) | ||||||||||||
| Flinders Island Airport | 22.8 | +1.1 | 34.7 | 29 Jan 2018 | 14.4 | +1.4 | 6.4 | 17 Jan 2018 | 230.4 | 143.4 | v high | 161% |
| Hogan Island | 22.1 | +1.1 | 34.3 | 6 Jan 2018 | 15.2 | +0.7 | 11.0 | 3 Dec 2017 | 124.8 | 125.6 | average | 99% |
| Note: From 2017, information about Macquarie Island can be found in the climate summary for the Remote Islands and Antarctica | ||||||||||||
Extremes Maps Records Summaries Important notes the top
Notes
The Seasonal climate summary, generally published on the first working day of each month, lists the main features of the weather in Tasmania using the most timely and accurate information available on the date of publication; it will generally not be updated. More extensive discussion of significant weather events, along with later information and data that has had greater opportunity for quality control, will be presented in the Monthly Weather Review.
This statement has been prepared based on information available at 9 am on Thursday 1 March 2018. Some checks have been made on the data, but it is possible that results will change as new information becomes available.
In some situations, some or all of the rainfall is in the form of hail or snow. In these cases the totals given are for the water equivalent: the depth of liquid water that results from melting any frozen precipitation. There can be significant 'undercatch' of snow in strong winds, meaning the true precipitation can be higher than that reported.
Averages for individual sites are long-term means based on observations from
all available years of record, which vary widely from site to site.
They are not shown for sites with less than 10 years of record, as they cannot then be calculated reliably.
The median
is sometimes more representative than the
mean
of long-term average rain.
The Rank indicates how rainfall this time compares with the climate record for the site,
based on the
decile ranking
(very low rainfall is in decile 1, low in decile 2 or 3,
average in decile 4 to 7, high in decile 8 or 9
and very high is in decile 10).
The Fraction of average shows how much rain has fallen this time as a
percentage of the long-term mean.
Where temperature area averages are mentioned, they are derived from the ACORN-SAT dataset.
Further information
- Media
- media@bom.gov.au (03) 9669 4057
- Enquiries
- helpdesk.climate@bom.gov.au
Unless otherwise noted, all maps, graphs and diagrams in this page are licensed under the Creative Commons Attribution 4.0 International Licence
