Daily Report for 11th September 2018

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 16.3 °C (+4.8) 23:58 12.0 °C (+0.2) 16.5 °C (+5.0), 2010 9.0 °C (-2.5), 2016
Maximum Temperature 21.7 °C (+2.1) 16:44 21.5 °C (+1.2) 21.7 °C (+2.1), 2018 16.3 °C (-3.3), 2013
Mean Temperature 18.7 °C (+3.4) 16.6 °C (+0.7) 18.7 °C, 2018 13.6 °C, 2013
Minimum Humidity 76% 10:17 52% 76%, 2018 37%, 2012
Maximum Humidity 93% 23:45 90% 94%, 2009 79%, 2012
Mean Humidity 82% 73% 82%, 2018 58%, 2012
Minimum Pressure 1018 hPa 07:06 1019 hPa 1034 hPa, 2009 991 hPa, 2017
Maximum Pressure 1021 hPa 22:38 1022 hPa 1038 hPa, 2009 1001 hPa, 2017
Mean Pressure 1020 hPa 1021 hPa 1036 hPa, 2009 994 hPa, 2017
Mean Wind Speed 7.7 mph (+3.8) 4.1 mph (+0.2) 8.3 mph, 2017 2.5 mph, 2014
Maximum Wind Speed 17.3 mph 07:29 11.8 mph 21.5 mph, 2011 7.4 mph, 2014
Maximum Gust 26.5 mph 07:30 18.5 mph 31.7 mph, 2011 9.8 mph, 2014
Mean Wind Direction SW
Rainfall 1.2 mm 1.2 mm (6%) 7.0 mm, 2017
Maximum Hourly Rain 1.0 mm 23:52 5.0 mm, 2017
Maximum 10-min Rain 0.4 mm 23:41 3.2 mm, 2017
Maximum Rain Rate 1.3 mm/h 23:41 48 mm/h, 2017
Minimum Dew Point 13.6 °C 00:19 9.3 °C 13.6 °C, 2018 1.3 °C, 2012
Maximum Dew Point 17.7 °C 16:43 13.6 °C 17.7 °C, 2018 11.7 °C, 2013
Mean Dew Point 15.6 °C 11.3 °C 15.6 °C, 2018 6.8 °C, 2012
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) * 16.5 °C * 00:51 12.1 °C 16.5 °C, 2010 9.0 °C, 2016
Day Maximum (09-21) 21.7 °C 16:32 21.5 °C 21.7 °C, 2018 16.3 °C, 2013
Max 10m Temp Rise 0.3 °C 08:16 0.6 °C 1.0 °C, 2016 0.3 °C, 2018
Max 1hr Temp Rise 1.3 °C 08:42 2.5 °C 3.7 °C, 2016 1.3 °C, 2018
Max 1hr Hum Rise 4% 21:29 9% 20%, 2015 4%, 2010
Max 10m Temp Fall 0.4 °C 22:06 0.4 °C 0.9 °C, 2016 0.2 °C, 2010
Max 1hr Temp Fall 1.5 °C 22:39 1.7 °C 3.2 °C, 2016 1.1 °C, 2010
Max 1hr Hum Fall 4% 08:27 12% 28%, 2016 4%, 2018
Max 10m Wind Speed 12.6 mph 07:13 8.7 mph 14.4 mph, 2017 4.3 mph, 2014
Minimum Feels-like 19.6 °C 00:17 13.0 °C 19.6 °C, 2018 7.3 °C, 2016
Maximum Feels-like 27.5 °C 16:07 23.9 °C 27.5 °C, 2018 17.4 °C, 2013
Mean Feels-like 23.1 °C 18.6 °C 23.1 °C, 2018 14.7 °C, 2013
Air-frost Hrs 0 hrs 0 hrs 0 hrs, 2009 0 hrs, 2009
Measure Value (anomaly) Month cumul. Record High Record Low
Temperature Range 5.4 °C (-2.7) 9.5 °C (+1.0) 12.5 °C (+4.4), 2016 4.5 °C (-3.6), 2010
Humidity Range 17% 38% 51%, 2015 17%, 2018
Pressure Range 3 hPa 4 hPa 10 hPa, 2017 2 hPa, 2013
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 1.5 [13%]69 hrs (130%) [52%] 11.7 [100%], 2016 0 [0%], 2014
Wet Hours 2
[Mean rain rate: 0.6 mm/h]
2 hrs (13%) [0.8%] 4, 2013 0, 2009
Cloud Cover am: Mostly Sunny transitioned to Overcast
pm: Overcast or Mostly Cloudy
Events None
Comments 22- 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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