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 time of the extremum (if the value persisted for >1 minute).
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; their reliablity is questionable and they are provided for interest only.
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Daily Graph of Conditions

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