Monthly Report for May 2009

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Weather Summary
Measure	Mean / Sum (anomaly)	Min	Max	Mean Time
Minimum Temperature	8.9 °C (-0.1)	4.8 °C	12.9 °C	06:55
Maximum Temperature	18.7 °C (+0.9)	12.8 °C	25.3 °C	14:55
Mean Temperature	13.5 °C (+0.4)	9.3 °C	17.5 °C
Minimum Humidity	46%	30%	70%	14:42
Maximum Humidity	87%	71%	95%	09:21
Mean Humidity	68%	53%	84%
Minimum Pressure	1015 hPa	1000 hPa	1029 hPa	12:46
Maximum Pressure	1021 hPa	1004 hPa	1033 hPa	13:03
Mean Pressure	1018 hPa	1002 hPa	1031 hPa
Mean Wind Speed	5.8 mph (+1.1)	2.3 mph	9.6 mph
Maximum Wind Speed	n/a	n/a	n/a	n/a
Maximum Gust	23.9 mph	13.0 mph	34.0 mph	n/a
Mean Wind Direction	n/a	n/a	n/a
Rainfall	26.3 mm (57%)	0.0 mm	11.9 mm
Maximum Hourly Rain	1.7 mm	0.3 mm	4.4 mm	08:00
Maximum 10-min Rain	0.8 mm	0.3 mm	1.9 mm	09:38
Maximum Rain Rate	10 mm/h	0.6 mm/h	33 mm/h	07:41
Minimum Dew Point	4.1 °C	-2.2 °C	11.8 °C	13:35
Maximum Dew Point	10.4 °C	5.6 °C	16.2 °C	11:24
Mean Dew Point	7.2 °C	2.1 °C	13.0 °C
Night Minimum (21-09)	9.1 °C	4.8 °C	12.9 °C	n/a
Day Maximum (09-21)	18.7 °C	12.8 °C	25.3 °C	n/a
Max 10m Temp Rise	0.8 °C	0.3 °C	1.6 °C	12:26
Max 1hr Temp Rise	2.4 °C	0.9 °C	3.9 °C	12:28
Max 1hr Hum Rise	9%	4%	28%	16:22
Max 10m Temp Fall	0.5 °C	0.2 °C	1.2 °C	12:53
Max 1hr Temp Fall	1.6 °C	0.6 °C	2.5 °C	15:02
Max 1hr Hum Fall	14%	3%	27%	13:04
Max 10m Wind Speed	n/a	n/a	n/a	n/a
Minimum Feels-like	0.0 °C	0.0 °C	0.0 °C	n/a
Maximum Feels-like	n/a	n/a	n/a	n/a
Mean Feels-like	n/a	n/a	n/a	n/a
Air-frost Hrs	0 hrs	0 hrs	0 hrs	n/a
Measure	Mean / Sum (anomaly)	Min	Max
Temperature Range	9.8 °C (+1.0)	3.7 °C	15.1 °C
Humidity Range	41%	12%	60%
Pressure Range	5 hPa	2 hPa	15 hPa
Measure	Sum (anom.) [% of max]	Min	Max
Sun Hours	194 (103%) [44%]	0	14.5
Wet Hours	28 (70%) [3.8%]	0	9

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 (entered with a delay of 1-10 days). Consequently, their reliablity is questionable and they         are provided for interest only.

Days Of...
Rainfall		Temperature		Sunshine		Other
> 0.0 mm	13	Min < -5.0 °C	0	> 0 hrs	29	Falling Snow	0
> 0.1 mm	8	Min < 0.0 °C	0	> 1 hrs	27	Lying Snow	0
> 0.3 mm	8	Mean < 0.0 °C	0	> 3 hrs	23	Hail	0
> 1.0 mm	6	Mean > 20.0 °C	0	> 5 hrs	19	Thunder	0
> 5.0 mm	1	Max > 25.0 °C	2	> 10 hrs	9	Dense Fog	0
> 10.0 mm	1	Max > 30.0 °C	0	> 25% max poss.	23	Gusts > 30mph	4
> 20.0 mm	0	Min > 20.0 °C	0	> 95% max poss.	1	Total Events	4

Misc.

Mean rainfall for days with >0.3mm: 3.3 mm
Total snowfall: 0 cm - 0% of the total precipitation
Total lying snow: 0 cm

Graphs and Charts

Minimum Temperature Maximum Temperature Mean Temperature Minimum Humidity Maximum Humidity Mean Humidity Minimum Pressure Maximum Pressure Mean Pressure Mean Wind Speed Maximum Wind Speed Maximum Gust Mean Wind Direction Rainfall Maximum Hourly Rain Maximum 10-min Rain Maximum Rain Rate Minimum Dew Point Maximum Dew Point Mean Dew Point Max 10m Temp Rise Max 1hr Temp Rise Max 1hr Hum Rise Max 10m Temp Fall Max 1hr Temp Fall Max 1hr Hum Fall Temperature Range Humidity Range Pressure Range Sun Hours Wet Hours Mean Rain Rate Falling Snow Lying Snow Hail Thunder Dense Fog Night Minimum (21-09) Day Maximum (09-21) Max 10-min Wind Speed Max Hourly Wind Speed

Wind rose

View daily breakdown for month