Monthly Report for September 2011

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Weather Summary
Measure Mean / Sum (anomaly) Min Max Mean Time
Minimum Temperature 12.4 °C (+1.3) 7.2 °C 16.2 °C 10:36
Maximum Temperature 20.4 °C (+1.7) 16.3 °C 27.4 °C 14:58
Mean Temperature 16.2 °C (+1.5) 11.8 °C 19.6 °C
Minimum Humidity 56% 40% 77% 16:15
Maximum Humidity 91% 78% 98% 10:35
Mean Humidity 75% 64% 88%
Minimum Pressure 1012 hPa 1000 hPa 1026 hPa 11:25
Maximum Pressure 1016 hPa 1007 hPa 1030 hPa 11:10
Mean Pressure 1014 hPa 1005 hPa 1028 hPa
Mean Wind Speed 5.1 mph (+1.2) 1.8 mph 10.8 mph
Maximum Wind Speed 13.5 mph 7.1 mph 22.1 mph n/a
Maximum Gust 19.3 mph 9.8 mph 37.4 mph 13:37
Mean Wind Direction SSW E W
Rainfall 42.1 mm (74%) 0.0 mm 21.7 mm
Maximum Hourly Rain 3.4 mm 0.3 mm 18.4 mm 12:26
Maximum 10-min Rain 1.6 mm 0.3 mm 7.4 mm 12:08
Maximum Rain Rate 20 mm/h 0.6 mm/h 100 mm/h 12:32
Minimum Dew Point 9.1 °C 4.8 °C 14.6 °C 12:44
Maximum Dew Point 14.3 °C 9.8 °C 18.6 °C 11:22
Mean Dew Point 11.6 °C 7.3 °C 15.9 °C
Night Minimum (21-09) 12.8 °C 7.2 °C 17.8 °C 06:14
Day Maximum (09-21) 20.4 °C 16.3 °C 27.4 °C 15:00
Max 10m Temp Rise 0.6 °C 0.2 °C 1.0 °C 09:44
Max 1hr Temp Rise 2.2 °C 0.8 °C 4.8 °C 10:27
Max 1hr Hum Rise 8% 3% 19% 16:31
Max 10m Temp Fall 0.4 °C 0.1 °C 0.7 °C 15:29
Max 1hr Temp Fall 1.4 °C 0.4 °C 2.6 °C 16:20
Max 1hr Hum Fall 10% 2% 19% 11:38
Max 10m Wind Speed 8.9 mph 5.1 mph 14.8 mph 13:57
Minimum Feels-like 13.5 °C 6.0 °C 19.4 °C 11:52
Maximum Feels-like 23.0 °C 17.8 °C 30.2 °C 14:11
Mean Feels-like 18.4 °C 12.1 °C 23.8 °C n/a
Air-frost Hrs 0 hrs 0 hrs 0 hrs n/a
Measure Mean / Sum (anomaly) Min Max
Temperature Range 8.1 °C (+0.5) 3.8 °C 13.9 °C
Humidity Range 35% 16% 55%
Pressure Range 4 hPa 1 hPa 10 hPa
Measure Sum (anom.) [% of max] Min Max
Sun Hours 160 (116%) [47%] 0 10.61
Wet Hours 24 (59%) [3.3%] 0 5

NB: Hover over a value to view the date it was recorded.
    Sun hrs, Wet hrs, Cloud cover and Events are based on manual equipment/observations. Consequently, their reliablity is questionable and they         are provided for interest only.

Days Of...
Rainfall Temperature Sunshine Other
> 0.0 mm 16 Min < -5.0 °C 0 > 0 hrs 29 Falling Snow 0
> 0.1 mm 15 Min < 0.0 °C 0 > 1 hrs 26 Lying Snow 0
> 0.3 mm 9 Mean < 0.0 °C 0 > 3 hrs 22 Hail 0
> 1.0 mm 7 Mean > 20.0 °C 0 > 5 hrs 17 Thunder 0
> 5.0 mm 1 Max > 25.0 °C 3 > 10 hrs 3 Dense Fog 1
> 10.0 mm 1 Max > 30.0 °C 0 > 25% max poss. 22 Gusts > 30mph 3
> 20.0 mm 1 Min > 20.0 °C 0 > 95% max poss. 3 Total Events 4

Misc.

Mean rainfall for days with >0.2mm: 4.7 mm
Total snowfall: 0 cm - 0% of the total precipitation
Total lying snow: 0 cm

Graphs and Charts

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View daily breakdown