Monthly Report for May 2011

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Weather Summary
Measure Mean / Sum (anomaly) Min Max Mean Time
Minimum Temperature 9.5 °C (+1.2) 3.2 °C 14.6 °C 08:24
Maximum Temperature 18.5 °C (+1.8) 14.1 °C 24.5 °C 15:33
Mean Temperature 14.2 °C (+1.5) 9.7 °C 18.4 °C
Minimum Humidity 42% 27% 65% 16:06
Maximum Humidity 80% 66% 91% 08:08
Mean Humidity 60% 46% 81%
Minimum Pressure 1015 hPa 1005 hPa 1023 hPa 11:30
Maximum Pressure 1020 hPa 1012 hPa 1029 hPa 12:19
Mean Pressure 1018 hPa 1009 hPa 1024 hPa
Mean Wind Speed 6.0 mph (+1.3) 2.4 mph 10.4 mph
Maximum Wind Speed 14.8 mph 8.1 mph 22.5 mph n/a
Maximum Gust 21.3 mph 10.9 mph 33.8 mph 14:48
Mean Wind Direction SW ENE N
Rainfall 24.1 mm (47%) 0.0 mm 14.5 mm
Maximum Hourly Rain 2.2 mm 0.5 mm 5.2 mm 12:17
Maximum 10-min Rain 1.2 mm 0.3 mm 3.8 mm 12:15
Maximum Rain Rate 20 mm/h 1.5 mm/h 80 mm/h 12:02
Minimum Dew Point 3.1 °C -4.2 °C 9.6 °C 13:34
Maximum Dew Point 9.2 °C 4.5 °C 15.1 °C 11:24
Mean Dew Point 6.1 °C -0.2 °C 11.4 °C
Night Minimum (21-09) 9.7 °C 3.2 °C 15.0 °C 05:32
Day Maximum (09-21) 18.5 °C 14.1 °C 24.5 °C 15:30
Max 10m Temp Rise 0.7 °C 0.4 °C 1.2 °C 09:27
Max 1hr Temp Rise 2.7 °C 1.2 °C 5.7 °C 09:30
Max 1hr Hum Rise 8% 4% 16% 15:52
Max 10m Temp Fall 0.5 °C 0.2 °C 1.0 °C 14:14
Max 1hr Temp Fall 1.7 °C 0.7 °C 4.0 °C 16:58
Max 1hr Hum Fall 10% 4% 25% 10:43
Max 10m Wind Speed 10.2 mph 7.3 mph 15.7 mph 14:31
Minimum Feels-like 8.7 °C 1.2 °C 15.7 °C 08:05
Maximum Feels-like 19.0 °C 14.1 °C 25.7 °C 15:06
Mean Feels-like 14.5 °C 8.8 °C 20.3 °C n/a
Air-frost Hrs 0 hrs 0 hrs 0 hrs n/a
Measure Mean / Sum (anomaly) Min Max
Temperature Range 9.0 °C (+0.6) 4.2 °C 15.4 °C
Humidity Range 38% 20% 53%
Pressure Range 6 hPa 1 hPa 16 hPa
Measure Sum (anom.) [% of max] Min Max
Sun Hours 218 (115%) [50%] 0.2 13.5
Wet Hours 13 (32%) [1.7%] 0 3

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 9 Min < -5.0 °C 0 > 0 hrs 31 Falling Snow 0
> 0.1 mm 6 Min < 0.0 °C 0 > 1 hrs 30 Lying Snow 0
> 0.3 mm 6 Mean < 0.0 °C 0 > 3 hrs 22 Hail 1
> 1.0 mm 6 Mean > 20.0 °C 0 > 5 hrs 17 Thunder 1
> 5.0 mm 1 Max > 25.0 °C 0 > 10 hrs 9 Dense Fog 0
> 10.0 mm 1 Max > 30.0 °C 0 > 25% max poss. 22 Gusts > 30mph 3
> 20.0 mm 0 Min > 20.0 °C 0 > 95% max poss. 3 Total Events 5

Misc.

Mean rainfall for days with >0.2mm: 4.0 mm
Total snowfall: 0 cm - 0% of the total precipitation
Total lying snow: 0 cm

Graphs and Charts

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