August 2017 was cooler and wetter than average. Winds were the lightest ever recorded in an August here.
The average temperature in the month was 14.9°C, 0.4°C below the mean. The maximum temperature was 24.6°C at 16:13 on the 28th, with the minimum being 6.9°C at 07:48 on the 31st. This was the lowest temperature here since 6.3°C was recorded on May 21st 2017. The average daily high temperature was 19.4°C, 0.4°C below the mean. The average daily low temperature was 10.6°C, 0.8°C below the mean. The warmest day was the 28th with an average temperature of 18.6°C. The coldest day was the 30th with an average temperature of 11.7°C.
The highest dew point was 18.2°C at 18:43 on the 22nd, 1.1°C below the mean. The lowest dew point was 6.0°C at 07:48 on the 31st, 0.9°C above the mean, and an August high. The average dew point for the month was 11.8°C. The high wind chill was 24.6°C at 16:13 on the 28th, with the lowest being 6.9°C at 07:48 on the 31st. The average wind chill in the month was 14.9°C. There were 193.93 hours of sunshine in the month, with the sunniest day being the 4th when 10.35 hours was recorded.
August’s rainfall totalled 52.6 millimetres, 2.7 millimetres more than the month average. This was the wettest August since 2012. Precipitation was recorded on 18 days, average for August. The wettest day was the 8th when 26.4 millimetres was recorded, more than half of the month total. This was the wettest day the wettest day since 32.4 millimetres was recorded on July 23rd 2013. The highest rain rate was 30.6 millimetres per hour recorded at 13:17 on the 30th. There has been 293.8 millimetres of rain in 2017, a little over 80% of the mean for the end of August.
The highest barometric pressure was 1043.8 millibars at 11:15 on the 10th. The lowest barometric pressure was 999.6 millibars at 08:40 on the 3rd. The average pressure in the month was 1014.1 millibars. The highest humidity was 98% at 08:07 on the 20th, and the month average humidity was 82%.
Winds in August were the lowest ever recorded here in the month. The average gust speed was 4.3 mph, mean 5.5 mph, and the average wind speed was 2.5 mph, mean 3.4 mph. The highest gust speed was 25 mph at 14:38 on the 19th, 3.7 mph below the average. The maximum wind speed was 15 mph at 15:21 on the 3rd, 2.5 mph below the average. The total wind run was 1864.2 miles, with the predominate direction being 219°.
The maximum high solar radiation recorded at 13:41 on the 4th was 1146 w/m². The average solar radiation for the month was 158 w/m². The highest U.V. Index was 5.9 set at 12:49 on the 11th.