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Monday, 2 September 2002
SEASONAL CLIMATE SUMMARY - WESTERN AUSTRALIAN REGIONAL OFFICE
Rainfall: Winter rainfall in Perth this year was well below average.
From June to August, Perth received 384.8 millimetres over 51 days
compared with the average of 490mm over 52 days. Last winter, Perth
recorded 382.2mm over 42 days. Rainfall totals for individual winter months were:
June 183.8mm (av 182mm), July 119.8mm (av 173) and August 81.2mm (av 135 mm).
The wettest day was 4 June when 53.0mm fell.
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| Winter rainfall totals (mm), 1990-2002 | |||
|---|---|---|---|
| Year | Rainfall (mm) | Rain days | Departure from normal |
| 1990 | 351.6 | 45 | -138 |
| 1991 | 509.2 | 58 | +19 |
| 1992 | 532.6 | 55 | +43 |
| 1993 | 346.0 | 43 | -144 |
| 1994 | 535.0 | 51 | +45 |
| 1995 | 512.4 | 52 | +22 |
| 1996 | 555.8 | 63 | +66 |
| 1997 | 361.6 | 41 | -128 |
| 1998 | 414.8 | 57 | -75 |
| 1999 | 401.6 | 48 | -88 |
| 2000 | 497.2 | 58 | +7 |
| 2001 | 382.2 | 42 | -108 |
| 2002 | 384.8 | 51 | -105 |
Maximum temperatures: The mean daily maximum temperature for Perth this winter of 18.8 degrees Celsius was near the average of 18 degrees. Daily values ranged from a cold 14.5 degrees on 12 July to a warm 25.3 degrees on 24 August. Last winter the mean maximum temperature was 19.1 degrees.
Minimum temperatures: The mean daily minimum temperature for Perth this winter of 8.7 degrees was near the average of 8 degrees. Daily minima ranged from a cold 0.9 degrees on 28 July to a mild 14.4 degrees on 2 and 3 June. Perth recorded 18 cold nights this winter when the temperature was 5 degrees or less, two fewer than the long-term average of 20 nights. Last winter the mean minimum temperature was 6.6 degrees.
| Winter averages | |||||||
|---|---|---|---|---|---|---|---|
| Element | 2002 mean | Average | Highest average |
Year | Lowest average |
Year | Years of record |
| Maximum temp (°C) | 18.8 | 18 | 19.7 | 1976 | 16.5 | 1916 | 106 |
| Minimum temp (°C) | 8.7 | 8 | 11.0 | 1964 | 6.6 | 2001 | 106 |
| Sunshine (hours/day) | 6.3 | 6.3 | 7.2 | 2001 | 4.1 | 1926 | 105 |
| Winter rainfall averages and extremes | |||||||
| Element | 2002 total | Average | Highest | Year | Lowest | Year | Years of record |
| Rainfall (mm) | 384.8 | 490 | 957.1 | 1945 | 260.0 | 1940 | 127 |
| Rain days | 51 | 52 | 68 | 1915,26 | 35 | 1902 | 127 |
Note: Official Perth observations have been recorded at several different sites over the years. Changes in site location can affect both temperature and rainfall readings. Due to a relatively short period of record for the current site, temperature averages have been estimated to represent that site.
Ends
Further information:
John Relf (JR), or Glenn Cook, tel:(08) 9263 2222 or, after hours, the senior forecaster.