Western Australia in May 2014: sixth warmest May on record

May 2014 saw the mean minimum temperature for the State at 1.7 °C above average and ranking as the sixth warmest May in terms of the mean minimum temperature since comparable records commenced in 1910. For the Lower Southwest (southwest of a line from Jurien Bay to Bremer Bay), the mean minimum temperature was 2.0 °C above average and the third warmest May on record. The statewide averaged mean maximum temperature was also above average, whilst the average maximum temperature for the Lower Southwest was near average. Rainfall averaged across WA was above average due to significant rainfall events during the month, particularly in the western half of the State, whilst the Lower Southwest also recorded an above average May as a result of a couple of cold fronts bringing significant rainfall to the region, and the fact that the region remained in a moist westerly stream for much of the month with frequent shower activity. The Southwest Land Division as a whole recorded a near average month.

  • Thunderstorms on the last day of April and first day of May brought some heavy falls to the west Kimberley, including a record high May daily total at Camballin.
  • A trough just off the northwest coast with a tropical low near the Gascoyne coast and a cloudband across much of the state produced widespread rain across WA from the 5th to 6th. Daily rainfall totals of 50 mm to 130 mm were recorded in the Pilbara on the 6th, and a number of sites saw their wettest day in May on record, including Millstream (90.0 mm) with 107 years of record.
  • A strong cold front and associated cloudband moved across western, central, and southern parts of WA on the 7th and 8th. Daily rainfall in the 40 to 60 mm range was recorded in the west Gascoyne, Central West, Lower West, and Southwest, while a trough ahead of the cold front also triggered isolated thunderstorms with moderate to heavy rainfall in the west Pilbara. Learmonth Airport recorded its highest daily rainfall in May on record with 93.8 mm.
  • A series of cold fronts moved through southwest WA between the 18th and 26th bringing frequent moderate to heavy rainfall to the Lower Southwest and a few sites recorded their highest daily rainfall on record for May
  • A number of sites in the Lower Southwest and Eucla saw their wettest May for at least 20 years, with Burekup recording its wettest May in its 63 years of record, whilst in the north Dampier Salt recorded its wettest May in 44 years of record.
  • Balgo Hills recorded its warmest May in terms of daytime maximum temperatures, whilst Esperance recorded its warmest May in terms of overnight minimum temperatures.

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Extremes in May 2014
Hottest day 38.0 °C at Wyndham Aero on the 1st
Warmest days on average 35.8 °C at Wyndham Aero
Coolest days on average 17.9 °C at Rocky Gully
Coldest day 13.5 °C at Mount Barker on the 1st
Coldest night 0.3 °C at Wandering on the 2nd
Coolest nights on average 8.5 °C at Southern Cross Airfield
Warmest nights on average 27.5 °C at Browse Island
22.4 °C at Truscott
Warmest night 28.4 °C at Browse Island on the 1st & 15th
27.9 °C at Wyndham on the 3rd
Warmest on average overall 29.4 °C at Browse Island
28.4 °C at Wyndham
Coolest on average overall 13.8 °C at Wandering
Wettest overall 318.0 mm at Mount William
Wettest day 125.6 mm at Roebourne Aero on the 6th
Highest wind gust 107 km/h at Cape Leeuwin on the 12th

Maps
ObservedAnomalyDecile rank
Total
rainfall
Map of Rainfall totals Map of Percentage of normal rainfall Map of Rainfall deciles
Mean
daily
maximum
temperatures
Map of Mean maximum temperature Map of Anomaly in mean maximum temperature Map of Decile rank of mean maximum temperature
Mean
daily
minimum
temperatures
Map of Mean minimum temperature Map of Anomaly in mean minimum temperature Map of Decile rank of mean minimum temperature

Click on a map to show it full size in a pop-up window


Record highest May daily rainfall
Highest daily rainfall
in May 2014 (mm)
Previous wettest
for May
Years of
record
Kojonup 54.2 on the 21st 48.4 on the 16th in 2005 108
Millstream 90.0 on the 6th 80.8 on the 16th in 1942 107
Karratha Station 75.0 on the 6th 74.9 on the 22nd in 1973 100
Learmonth Airport 93.8 on the 8th 90.4 on the 20th in 1984 62
Cranham 47.4 on the 21st 39.4 on the 16th in 2005 61
Pyramid Station 110.2 on the 6th 86.5 on the 20th in 1982 58
Dampier Salt 120.6 on the 6th 70.4 on the 22nd in 1973 44
Frankland 37.0 on the 19th 32.5 on the 19th in 2005 43
Karratha Aero 107.4 on the 6th 77.0 on the 16th in 2011 42
Camballin 62.0 on the 1st 48.5 on the 20th in 1968 40
Desert Fringe 25.0 on the 8th 22.6 on the 13th in 2003 33



Record highest total May rainfall
Total rainfall
for May 2014 (mm)
Previous wettest
for May
Years of
record
Average for
May
Burekup 269.9 258.3 in 1905 64 128.0
Dampier Salt 199.3 149.6 in 1970 45 31.0
Wagerup Refinery 216.9 211.2 in 2005 31 115.7

Highest total May rainfall for at least 30 years
Total rainfall
for May 2014 (mm)
Most recent May
at least this wet
Years since
wetter
Average for
May
Donnybrook 268.4 270.1 in 1923 91 135.6
Roebourne 132.0 147.0 in 1970* 43 28.4
Karratha Aero 135.4 143.7 in 1973* 40 27.8
Roelands 238.4 288.9 in 1974 40 125.6
Ferguson Valley 297.2 322.2 in 1974* 39 128.8
Pyramid Station 110.2 165.4 in 1970* 39 29.9
Brunswick Junction 260.4 317.0 in 1974* 38 141.2
Emu Creek Station 104.5 259.4 in 1984 30 36.1
Learmonth Airport 166.4 230.8 in 1984 30 42.8
Mininer 82.4 123.7 in 1984 30 19.5

* note: there are gaps in the historical record at this site, so it is possible a higher value has gone unreported.



Record highest May temperature
Highest temperature
in May 2014 (°C)
Previous warmest
for May
Years of
record
Average for
May
Cocos Island Airport 31.6 on the 6th 31.5 on the 7th in 2013 63 29.2
Christmas Island Aero 30.5 on the 4th 30.0 on the 2nd in 1984 40 27.8



Record highest May mean daily maximum temperature
Mean daily maximum
temperature
for May 2014 (°C)
Previous warmest
for May
Years of
record
Average for
May
Christmas Island Aero 29.0 28.9 in 1984 39 27.8
Balgo Hills 32.0 31.8 in 2002 33 29.1



Record highest May daily minimum temperature
Highest daily minimum
temperature
in May 2014 (°C)
Previous warmest
for May
Years of
record
Average for
May
Port Hedland Airport 26.3 on the 2nd 25.8 on the 4th in 2005 66 17.2
Mardie 25.1 on the 8th = 25.1 on the 8th in 2013 57 16.9
Christmas Island Aero 26.3 on the 10th 26.2 on the 7th in 1998 40 23.8



Record highest May mean daily minimum temperature
Mean daily minimum
temperature
for May 2014 (°C)
Previous warmest
for May
Years of
record
Average for
May
Esperance 12.7 12.5 in 1999 44 11.1
Christmas Island Aero 24.8 = 24.8 in 2005 39 23.8



Summary statistics for May 2014
Maximum temperatures
for May
(°C)
Minimum temperatures
for May
(°C)
Rainfall
for May
(millimetres)
Mean for
May
2014
Diff
from
average
Highest for
May
2014
Mean for
May
2014
Diff
from
average
Lowest for
May
2014
Total for
May
2014
Average
for
May
Rank of
May
2014
Fraction of
May
average
North Kimberley (district 01)
Doongan 32.2 +1.1 34.0 2nd 16.8 +2.1 12.4 8th 8.1 15.2 average 53%
Kalumburu 34.4 +1.1 36.0 2nd 18.8 +1.9 14.0 9th 5.6 17.7 average 32%
Mount Elizabeth 31.8 +1.9 34.3 2nd 15.1 +2.9 11.5 8th 14.2 14.7 high 97%
Troughton Island 32.0 +0.9 33.2 2nd 26.3 +0.9 24.3 4th 59.0 44.8 average 132%
Truscott 32.7 +0.8 34.1 3rd 22.4 +0.9 19.7 9th 44.2 33.0 high 134%
Wyndham 35.2 +1.7 36.9 2nd 20.9 +0.3 16.2 9th 2.0 8.2 average 24%
Wyndham Aero 35.8 +2.0 38.0 1st 21.0 +1.9 16.4 9th 1.2 10.5 average 11%
East Kimberley (district 02)
Argyle Aerodrome 33.9 +2.1 36.0 2nd 22.1 +3.2 18.2 8th 0 9.0 v low 0%
Halls Creek Airport 32.1 +2.2 34.4 1st 19.1 +2.4 16.0 9th 0 12.7 lowest 0%
Kununurra Aero 34.5 +1.7 36.2 1st 19.1 +0.3 14.8 9th 0.2 6.8 average 3%
Warmun 34.2 +2.0 36.0 12th 18.2 +1.0 13.5 9th 0 10.3 lowest 0%
West Kimberley (district 03)
Bidyadanga 34.8 +2.4 37.0 14th 20.6 +2.2 16.8 29th 0 25.0 lowest 0%
Broome Airport 33.1 +1.6 35.8 11th 21.1 +2.9 15.5 4th 10.4 27.1 average 38%
Curtin Aero 34.2 +1.0 36.4 12th 20.4 +1.4 17.2 25th 23.4 16.1 high 145%
Derby Aero 34.5 +1.8 36.2 10th 21.5 +2.7 16.3 28th 6.8 19.3 average 35%
Fitzroy Crossing Aero 35.1 +2.1 37.0 11th 20.7 +5.0 16.8 28th 11.8 11.3 high 104%
Lombadina Airstrip 31.9   33.7 22nd 22.4   20.8 17th 22.8
West Roebuck 33.9 +1.0 36.9 11th 19.6 +3.5 13.5 4th 9.6 18.0 high 53%
De Grey (district 04)
Bedout Island 30.1   32.6 8th 24.5   20.9 16th
Karratha Aero 30.1 +0.1 33.1 2nd 19.8 +1.7 13.7 31st 135.4 27.8 v high 487%
Legendre Island 29.2   31.8 8th 22.8   19.1 25th
Mandora 34.4 +2.4 37.7 1st 19.2 +2.4 14.1 28th 0 24.4 lowest 0%
Marble Bar 32.1 +1.1 35.3 8th 18.1 +1.1 12.4 29th 1.2 12.5 average 10%
Pardoo Station 32.8 +1.1 35.9 1st 19.6 +2.4 13.1 28th 10.0 24.4 average 41%
Port Hedland Airport 32.6 +2.0 36.4 1st 19.9 +2.7 14.4 29th 14.8 27.1 average 55%
Roebourne 31.9 +1.4 35.5 2nd 19.7 +1.4 15.2 28th 132.0 28.4 v high 465%
Roebourne Aero 31.4 -0.4 36.0 2nd 18.7 +2.1 13.0 30th 137.0 26.3 v high 521%
Shay Gap 32.4   35.8 1st 20.5   15.3 29th 0.4
Fortescue (district 05)
Barimunya 26.7   30.7 7th 14.9   9.9 29th 31.6
Barrow Island Airport 28.0 +0.6 32.3 5th 22.5 +1.3 19.0 30th 118.6 59.3 high 200%
Christmas Creek 28.5   32.4 7th 15.7   6.6 31st 6.0
Coondewanna 26.5   30.6 1st 12.6   6.3 31st 43.2
Fortescue Dave Forrest 28.5   31.8 7th 15.3   6.9 31st 6.0
Learmonth Airport 27.6 -0.9 30.5 7th 16.7 +0.5 11.4 31st 166.4 42.8 v high 389%
Mardie 31.4 -0.1 36.6 2nd 19.3 +2.4 13.9 27th 62.4 36.8 high 170%
Onslow Airport 30.1 +0.9 33.8 1st 19.5 +2.2 15.2 30th 53.8 50.5 average 107%
Wittenoom 29.4 +1.6 33.2 1st 17.1 +1.0 11.3 30th 18.4 26.9 average 68%
West Gascoyne (district 06)
Carnarvon Airport 26.0 -0.2 30.3 19th 15.4 +0.6 8.6 30th 25.2 34.7 average 73%
Denham         16.7 +0.2 12.2 30th 115.7 38.2 v high 303%
Emu Creek Station 29.1 -0.8 32.9 3rd 17.3 +1.2 12.0 31st 104.5 36.1 v high 289%
Murchison 24.8 -1.2 29.5 14th 12.6 +1.3 6.5 31st 44.6 19.1 high 234%
Shark Bay Airport 25.6 -1.9 29.5 19th 15.2 +0.5 8.7 31st 58.8 27.2 high 216%
East Gascoyne (district 07)
Newman Aero 27.3 +0.2 33.1 7th 13.6 +1.9 6.3 31st 18.4 17.1 high 108%
Paraburdoo Aero 28.6 -0.5 32.7 1st 16.0 +1.4 10.0 27th 52.8 17.5 v high 302%
Murchison (district 07A)
Meekatharra Airport 23.9 +0.1 28.5 6th 12.2 +0.1 6.6 30th 27.2 22.9 average 119%
Mount Magnet Aero 22.5 -1.5 27.3 14th 11.8 0.0 6.5 31st 54.6 19.3 v high 283%
Paynes Find                 48.9 37.9 high 129%
North Coast (district 08)
Carnamah 21.6 -1.0 26.2 21st 11.6 +0.8 8.8 2nd 47.6 51.2 average 93%
Dalwallinu 20.7 -1.5 26.2 20th 10.3 +0.2 4.9 30th 43.8 37.1 average 118%
Eneabba                 78.5 70.6 high 111%
Geraldton Airport 22.9   25.4 3rd 12.9   6.7 31st 72.2
Kalbarri 24.9 -1.1 27.0 3rd 14.3 +1.1 7.5 30th 73.9 57.6 high 128%
Morawa Airport 21.7 -2.4 26.3 20th 10.8 +0.2 5.4 30th 36.8 40.2 average 92%
Mullewa 22.6 -1.1 27.0 6th 12.2 +1.0 8.2 30th 74.9 47.3 high 158%
North Island 23.5 -1.0 25.1 21st 17.7 -0.9 12.0 10th 54.4 47.8 average 114%
Wongan Hills 20.5 -1.1 25.0 20th 10.7 +0.7 5.0 30th 44.4 52.5 average 85%
Central Coast (district 09)
Badgingarra Research Stn 20.5 -2.0 24.4 6th 10.6 -0.1 8.0 15th 93.4 71.0 high 132%
Bickley 18.0 -1.5 20.7 3rd 11.2 +1.0 5.7 2nd 220.0 132.0 v high 167%
Champion Lakes 20.7   23.8 3rd 12.9   8.3 2nd 156.6
Garden Island HSF 21.0 -0.6 23.3 15th 15.3 +1.3 10.3 30th 81.2 79.4 high 102%
Gingin Aero 21.3 -1.6 23.8 11th 10.3 +1.0 3.8 30th 109.4 76.7 high 143%
Gosnells City         13.1 +1.3 8.0 1st 130.8 104.4 high 125%
Jandakot Aero 21.1 -1.0 23.5 11th 11.5 +2.1 3.4 2nd
Karnet 18.4 -0.8 21.4 3rd 10.8 +1.7 5.0 30th 237.2 142.2 v high 167%
Lancelin         13.0 +0.6 9.0 30th 55.0 82.6 low 67%
Medina Research Centre 22.0 -0.1 24.0 12th 12.9 +2.4 5.9 2nd        
Pearce RAAF 21.8 -0.2 24.8 11th 11.7 +0.9 5.9 1st 125.8 85.2 high 148%
Perth Airport 21.3 -0.5 24.4 11th 11.8 +1.4 5.2 1st 118.0 99.7 average 118%
Perth Metro 21.4 -1.0 23.8 11th 12.4 +1.9 6.0 30th 152.6 116.9 high 131%
Rottnest Island 21.1 0.0 23.0 22nd 15.7 +0.4 11.2 8th 96.0 101.6 average 94%
Swanbourne 21.7 -0.6 24.0 11th 13.7 +1.1 8.3 30th
South Coast (district 09A)
Albany 19.3 +0.7 23.5 11th 12.9 +2.2 7.9 13th 81.9 116.8 low 70%
Albany Airport 19.5   23.6 11th 11.6   6.1 31st 77.4
Bridgetown 18.9 -0.9 21.7 3rd 9.7 +2.9 3.0 2nd 149.0 103.6 high 144%
Bunbury 21.4 +0.3 23.8 3rd 11.9 +2.6 2.4 2nd 218.6 102.0 v high 214%
Busselton Aero 20.4 -0.3 23.2 7th 10.8 +1.6 4.7 2nd 123.2 104.9 average 117%
Cape Leeuwin 19.8 +0.6 22.2 7th 15.4 +1.7 10.6 31st 89.4 138.7 low 64%
Cape Naturaliste 20.5 +1.3 22.9 7th 14.1 +1.5 9.4 2nd 108.2 115.1 average 94%
Collie East 19.2 -1.0 22.2 19th 9.2 +3.1 0.5 2nd 208.2 96.7 high 215%
Donnybrook 20.0 0.0 22.5 19th 10.6 +2.4 3.1 2nd 268.4 135.6 v high 198%
Dwellingup 18.6 +0.1 21.1 3rd 10.4 +2.7 3.5 30th 257.0 158.5 v high 162%
Esperance 21.5 +1.0 25.9 20th 12.7 +1.6 10.0 1st 97.4 72.2 high 135%
Esperance Aero 21.5 +1.3 25.3 7th 11.6 +1.0 7.4 1st 65.4 66.6 average 98%
Harvey               252.4 121.9 v high 207%
Jarrahwood 19.7 -0.3 22.0 19th 9.2 +2.4 2.5 2nd 194.8 127.9 high 152%
Mandurah 20.8 -0.5 22.4 19th 15.0 +1.4 9.9 30th 117.4 96.2 high 122%
Manjimup 18.0 +0.3 21.0 19th 10.6 +1.7 6.1 13th 133.6 130.7 average 102%
North Walpole 18.7 -0.6 21.8 11th 12.5 +1.1 8.7 31st 129.4 127.9 average 101%
Pemberton 18.6 +0.4 21.8 7th 11.3 +1.9 7.1 31st 211.0 151.8 high 139%
Rocky Gully 17.9 -0.8 21.6 11th 10.5 +1.1 5.4 13th 155.2 76.4 v high 203%
Windy Harbour 19.7 -0.2 24.6 7th 13.1 +2.4 7.6 31st 185.4 143.9 high 129%
Witchcliffe 19.5 -0.4 21.8 7th 12.0 +2.3 6.7 31st 156.0 138.7 average 112%
North Central (district 10)
Bencubbin 19.9 -1.0 24.2 20th 10.4 +1.2 5.0 31st 40.8 37.0 average 110%
Cunderdin Airfield 20.6 -1.4 24.5 20th 10.3 +1.8 4.2 30th 66.0 33.1 high 199%
Kellerberrin 20.8 0.0 24.0 20th 9.7 +1.4 2.6 30th 47.5 42.0 average 113%
Merredin 20.3 -0.4 23.8 20th 9.4 +0.5 4.3 30th 52.7 40.9 average 129%
Northam 20.7 -0.5 23.9 11th 10.4 +2.0 4.1 30th 77.2 55.4 high 139%
York 20.4 -1.6 23.6 20th 9.6 +2.6 3.1 30th 89.7 46.6 high 192%
South Central (district 10A)
Beverley 20.3 -1.2 23.8 12th 10.1 +2.2 2.8 2nd 72.6 53.9 high 135%
Brookton 19.6 -0.9 22.8 16th 9.5 +1.8 3.8 30th 84.8 57.3 high 148%
Corrigin 19.5 -0.2 23.0 20th 9.9 +2.3 3.6 2nd 47.3 47.2 average 100%
Hyden 20.2 -0.6 24.2 20th 9.3 +1.7 5.5 1st 67.6 39.4 high 172%
Jacup 19.1 -0.7 22.8 11th 10.3 +1.8 5.7 31st 65.4 32.3 high 202%
Katanning 18.4 -1.0 21.5 19th 10.3 +1.5 5.2 31st 91.8 49.6 high 185%
Lake Grace 18.9 -1.3 21.9 17th 10.4 +1.5 4.9 2nd 48.2 31.2 high 154%
Narembeen         10.3 +2.1 4.4 3rd 60.0 39.9 high 150%
Narrogin 18.8 +0.2 21.7 12th 9.7 +1.8 2.4 2nd 99.6 63.0 high 158%
Newdegate Research Station 19.0 -1.1 22.6 20th 9.5 +2.2 3.8 31st 50.2 43.8 average 115%
Ongerup 18.6 -0.3 21.7 16th 10.3 +1.6 5.5 31st 65.4 44.1 high 148%
Pingelly 19.2 -0.5 22.3 12th 10.0 +1.2 3.8 2nd 98.0 58.1 high 169%
Ravensthorpe 19.8 -0.3 23.2 17th 10.7 +1.1 4.8 31st 34.0 44.1 average 77%
Wagin 18.9 -0.6 21.9 12th 10.6 +2.6 4.8 2nd 78.7 54.6 high 144%
Wandering 19.0 -1.2 22.1 12th 8.6 +2.2 0.3 2nd 115.6 55.5 v high 208%
Eucla (district 11)
Balladonia 22.8 +1.9 28.6 23rd 9.8 +1.7 5.1 31st 9.5 26.6 low 36%
Eucla 22.6 +1.5 29.8 7th 12.4 +1.8 6.8 14th 75.8 31.3 v high 242%
Eyre 22.9 +1.6 30.0 7th 10.7 +1.5 3.5 28th 81.8 39.3 v high 208%
Forrest 23.2 +0.9 31.0 7th 11.5 +2.7 6.7 10th 59.0 19.3 v high 306%
Red Rocks Point 22.6 +1.5 29.8 7th 12.4 +0.9 7.9 28th 56.2 32.6 v high 172%
South East (district 12)
Bulga Downs 22.8 -1.3 26.9 20th 9.7 +0.3 2.4 31st 42.8 25.6 high 167%
Kalgoorlie-Boulder Airport 21.5 +0.8 26.2 21st 10.0 +1.3 2.7 31st 18.7 26.2 average 71%
Laverton Aero 22.4 +0.2 29.3 7th 10.5 -0.1 4.7 29th 41.2 15.6 v high 264%
Leinster Aero 22.9 -0.2 27.6 23rd 10.8 +0.1 4.4 31st 34.0 17.4 high 195%
Leonora Aero 22.7   27.4 23rd 10.5   2.2 31st 36.2
Mount Keith 22.4   28.6 7th 10.7   4.1 31st 75.2
Munglinup West 20.4 -0.4 24.5 19th 10.7 +0.9 6.4 30th 41.2 40.6 average 101%
Norseman Aero 20.9 -0.2 25.8 21st 8.6 +1.4 3.9 27th 14.0 20.2 average 69%
Salmon Gums Res.Stn. 21.1 +1.3 25.1 20th 9.1 +1.9 3.9 1st 41.4 34.3 high 121%
Southern Cross Airfield 20.1 -1.4 23.4 20th 8.5 +0.9 1.7 30th 33.0 29.7 average 111%
Yeelirrie                 54.4 25.3 high 215%
North East (district 13)
Balgo Hills 32.0 +2.9 35.0 10th 18.3 +2.6 13.9 4th 2.8 15.5 average 18%
Carnegie 25.5 +0.2 33.7 7th 11.8 +1.1 4.0 31st 21.0 15.5 high 135%
Giles Meteorological Office 25.1 +1.4 30.2 12th 13.8 +2.5 5.2 31st 48.0 20.3 high 236%
Warburton Airfield 25.0 +0.7 32.7 7th 13.3 +2.9 4.5 31st 53.6 16.1 v high 333%
Wiluna 24.2 +0.4 30.9 7th 11.1 +1.1 4.0 30th 32.8 25.3 high 130%
Offshore Islands (district 200)
Adele Island 30.8   32.0 13th 26.4   23.0 1st
Browse Island 31.3   32.1 1st 27.5   24.3 3rd
Christmas Island Aero 29.0 +1.2 30.5 4th 24.8 +1.0 22.2 16th 137.8 181.2 average 76%
Cocos Island Airport 29.9 +0.7 31.6 6th 25.3 +0.3 23.5 31st 354.8 194.7 high 182%
Varanus Island 28.5 +0.5 31.1 1st 24.1 +0.6 20.5 25th 45.2 30.0 average 151%

Notes

A Monthly Climate Summary is prepared to list the main features of the weather in Western Australia using the most timely and accurate information available on the date of publication; it will generally not be updated. Later information, including data that has had greater opportunity for quality control, will be presented in the Monthly Weather Review, usually published in the fourth week of the month.

A Climate Summary is generally published on the first working day of each month.

This statement has been prepared based on information available at 9 am on Tuesday 3 June 2014. Some checks have been made on the data, but it is possible that results will change as new information becomes available.

Averages 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.

Further information

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Climate