Daily Report for 19th May 2009

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 9.6 °C (+1.1) 02:03 8.3 °C (+0.9) 13.1 °C (+4.6), 2014 6.2 °C (-2.3), 2018
Maximum Temperature 17.5 °C (+0.6) 15:30 17.0 °C (+1.1) 25.7 °C (+8.8), 2014 14.3 °C (-2.6), 2015
Mean Temperature 12.9 °C (+0.8) 12.3 °C (+1.0) 19.4 °C, 2014 10.1 °C, 2015
Minimum Humidity 48% 16:24 48% 58%, 2017 31%, 2014
Maximum Humidity 93% 07:14 86% 95%, 2018 77%, 2015
Mean Humidity 72% 69% 77%, 2017 54%, 2014
Minimum Pressure 1016 hPa 09:36 1014 hPa 1029 hPa, 2010 1000 hPa, 2015
Maximum Pressure 1020 hPa 23:37 1019 hPa 1031 hPa, 2010 1007 hPa, 2014
Mean Pressure 1018 hPa 1016 hPa 1030 hPa, 2010 1004 hPa, 2014
Mean Wind Speed n/a (-4.7) 0.0 mph (-4.7) 7.3, 2015 2.4, 2011
Maximum Wind Speed n/a 0.0 mph 19.2, 2015 7.7, 2017
Maximum Gust n/a 0.0 mph 24.4, 2015 10.9, 2011
Mean Wind Direction n/a
Rainfall 0.5 mm 12.4 mm (40%) 3.3 mm, 2015
Maximum Hourly Rain 0.5 mm 05:15 2.4 mm, 2015
Maximum 10-min Rain 0.3 mm 04:54 2.2 mm, 2015
Maximum Rain Rate 0.8 mm/h 05:15 36 mm/h, 2015
Minimum Dew Point 4.8 °C 19:29 3.5 °C 6.5 °C, 2014 1.4 °C, 2015
Maximum Dew Point 10.9 °C 11:34 9.2 °C 13.1 °C, 2014 5.6 °C, 2015
Mean Dew Point 7.6 °C 6.4 °C 9.1 °C, 2012 3.4 °C, 2015
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) 9.6 °C 8.6 °C 13.1 °C, 2014 6.2 °C, 2018
Day Maximum (09-21) 17.5 °C 17.0 °C 25.7 °C, 2014 14.3 °C, 2015
Max 10m Temp Rise 1.3 °C 13:34 0.8 °C 1.3 °C, 2009 0.5 °C, 2013
Max 1hr Temp Rise 1.7 °C 13:54 2.2 °C 4.3 °C, 2011 1.4 °C, 2016
Max 1hr Hum Rise 6% 20:44 9% 25%, 2015 6%, 2009
Max 10m Temp Fall 0.4 °C 15:51 0.5 °C 3.1 °C, 2015 0.3 °C, 2010
Max 1hr Temp Fall 1.3 °C 16:34 1.5 °C 4.6 °C, 2015 1.3 °C, 2009
Max 1hr Hum Fall 14% 12:33 14% 19%, 2014 6%, 2013
Max 10m Wind Speed n/a 0.0 mph 13.3, 2015 6, 2017
Minimum Feels-like n/a 0.0 °C 14.1, 2014 3.7, 2015
Maximum Feels-like n/a 0.0 °C 26, 2014 14.3, 2015
Mean Feels-like n/a 0.0 °C 20.2, 2014 8.9, 2015
Air-frost Hrs 0 hrs 0 hrs 0 hrs, 2009 0 hrs, 2009
Measure Value (anomaly) Month cumul. Record High Record Low
Temperature Range 7.9 °C (-0.5) 8.7 °C (+0.2) 14.9 °C (+6.5), 2018 6.0 °C (-2.4), 2017
Humidity Range 45% 38% 60%, 2018 29%, 2017
Pressure Range 4 hPa 5 hPa 10 hPa, 2015 2 hPa, 2010
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 5.8 [41%]100 hrs (88%) [38%] 14.3 [100%], 2018 0.7 [5%], 2016
Wet Hours 1
[Mean rain rate: 0.5 mm/h]
13 hrs (54%) [2.9%] 3, 2015 0, 2010
Cloud Cover not available
Events None
Comments 04-06 Light Showers; occasional. Brief am SL. Showers
Extra Comments
Issues None known
Observer Absent? No
Notes
Times of extremes are computed using the midpoint of the longest continuous period at that extreme value.
Cumulative anomalies are reported according to the expected value for the month-to-date rather than month-end.
Sun hrs, Wet hrs, Cloud cover and Events are based on manual equipment/observations (entered with a delay of 1-10 days); their reliablity is questionable and they are provided for interest only.
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Daily Graph of Conditions

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