Daily Report for 12th May 2018

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 9.8 °C (+2.2) 23:41 7.6 °C (+0.7) 12.6 °C (+5.0), 2017 1.0 °C (-6.6), 2010
Maximum Temperature 15.3 °C (-0.8) 12:36 20.0 °C (+4.5) 18.8 °C (+2.7), 2017 11.4 °C (-4.7), 2010
Mean Temperature 12.7 °C (+0.7) 14.3 °C (+2.6) 17.8 °C, 2016 6.9 °C, 2010
Minimum Humidity 63% 12:37 42% 63%, 2018 34%, 2009
Maximum Humidity 93% 23:02 90% 94%, 2016 74%, 2009
Mean Humidity 81% 64% 81%, 2018 52%, 2015
Minimum Pressure 1012 hPa 23:01 1013 hPa 1033 hPa, 2012 993 hPa, 2017
Maximum Pressure 1014 hPa 11:38 1020 hPa 1039 hPa, 2012 1002 hPa, 2017
Mean Pressure 1013 hPa 1016 hPa 1036 hPa, 2012 996 hPa, 2017
Mean Wind Speed 2.2 mph (-2.5) 4.1 mph (-0.6) 7.1 mph, 2015 2.2 mph, 2018
Maximum Wind Speed 7.7 mph 06:38 12.3 mph 17.8 mph, 2015 7.6 mph, 2010
Maximum Gust 11.5 mph 09:50 18.7 mph 27.5 mph, 2015 10.9 mph, 2010
Mean Wind Direction WSW
Rainfall 6.6 mm 12.8 mm (65%) 6.6 mm, 2018
Maximum Hourly Rain 2.4 mm 19:07 2.5 mm, 2014
Maximum 10-min Rain 0.6 mm 18:09 1.9 mm, 2014
Maximum Rain Rate 4.0 mm/h 18:21 54 mm/h, 2014
Minimum Dew Point 8.2 °C 12:40 4.5 °C 10.4 °C, 2016 -2.2 °C, 2010
Maximum Dew Point 11.0 °C 16:50 9.8 °C 14.9 °C, 2016 2.8 °C, 2010
Mean Dew Point 9.4 °C 6.9 °C 12.6 °C, 2016 0.1 °C, 2010
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) * 11.5 °C * 05:42 8.0 °C 12.6 °C, 2017 1.0 °C, 2010
Day Maximum (09-21) 15.3 °C 12:27 20.0 °C 23.8 °C, 2016 11.4 °C, 2010
Max 10m Temp Rise 0.4 °C 08:00 0.8 °C 0.8 °C, 2012 0.4 °C, 2018
Max 1hr Temp Rise 1.1 °C 08:45 3.3 °C 2.7 °C, 2010 1.1 °C, 2018
Max 1hr Hum Rise 11% 13:37 11% 18%, 2013 6%, 2009
Max 10m Temp Fall 0.4 °C 18:34 0.7 °C 1.1 °C, 2014 0.4 °C, 2009
Max 1hr Temp Fall 1.3 °C 04:14 2.2 °C 3.1 °C, 2016 1.3 °C, 2018
Max 1hr Hum Fall 8% 11:45 17% 19%, 2013 8%, 2018
Max 10m Wind Speed 5.5 mph 09:59 9.3 mph 14.9 mph, 2015 5.5 mph, 2018
Minimum Feels-like 7.8 °C 23:49 6.3 °C 14.1 °C, 2016 -1.0 °C, 2010
Maximum Feels-like 16.3 °C 11:32 20.9 °C 26.5 °C, 2016 11.4 °C, 2010
Mean Feels-like 13.7 °C 14.3 °C 20.4 °C, 2016 6.0 °C, 2010
Air-frost Hrs 0 hrs 0 hrs 0 hrs, 2009 0 hrs, 2009
Measure Value (anomaly) Month cumul. Record High Record Low
Temperature Range 5.5 °C (-3.0) 12.4 °C (+3.8) 10.8 °C (+2.3), 2009 1.4 °C (-7.1), 2016
Humidity Range 30% 48% 51%, 2013 27%, 2017
Pressure Range 2 hPa 6 hPa 9 hPa, 2017 2 hPa, 2018
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 0.2 [1%]104 hrs (146%) [63%] 12 [86%], 2016 0.2 [1%], 2018
Wet Hours 8
[Mean rain rate: 0.8 mm/h]
17 hrs (107%) [5.7%] 8, 2018 0, 2009
Cloud Cover am: Mostly Cloudy transitioned to Overcast
pm: Overcast
Events None
Comments 13-21 Rain
Extra Comments
Issues None known
Observer Absent? Yes - observations may be unreliable
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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