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 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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