August 2009 HOT and dry

The daily weather log

Weather log August 2009

Nearly all the days of August were warmer than normal. While half the nights were cold, some others were very warm. A regional heat wave struck from the 22nd to the 25th, setting records for exceptionally high temperature at Manilla and many other places. The maximum on the 23rd (31.8°) was 11.4° above normal, beating +10.5° set on 11/10/02. The minimum on the morning of the 25th (18.2°) was 14.0° above normal, beating +13.1° set on 23/9/03.
Sixteen minimum temperatures qualified as frosts (usually 15) but the coldest was no lower than -1.4°. Dew Points were low, often far below the air temperature, making the air unpleasantly dry.
Very light rain fell on four days, to a total of 6.8 mm. By the end of the month, there had been forty days without 5 mm of rain.

 Comparing August months

Climate August 2009

Mean daily maximum, mean, and minimum temperatures were far above normal for the month, by 3.1°, 2.5°, and 1.7° respectively. It was the warmest August in the 11-year record, and more than 4° warmer than the previous August (2008).
Manilla is very short of rain. Serious shortages (below the 10th percentile) are found not only in the August total (7 mm) but in totals for the 2, 3, 4, and 5 months to date. Worse, the 6-month total (145 mm) is a severe shortage (in the 4th percentile): it is 163 mm less than the median 6-month rainfall (308 mm). Rainfall totals for longer periods are good. The worst is the 8-year total that includes the 2002 drought: it is in the 24th percentile.

Data. Rainfall data is from Manilla Post Office, courtesy of Phil Pinch. Temperature and other data are from 3 Monash Street, Manilla.


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