Daily Report for 12th September 2018

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 9.1 °C (-2.4) 23:37 11.8 °C (-0.0) 14.6 °C (+3.1), 2011 8.5 °C (-3.0), 2012
Maximum Temperature 16.3 °C (-3.1) 00:01 21.1 °C (+0.9) 24.4 °C (+5.0), 2016 16.3 °C (-3.1), 2018
Mean Temperature 13.1 °C (-2.8) 16.3 °C (+0.4) 17.9 °C, 2011 13.1 °C, 2018
Minimum Humidity 72% 16:08 54% 72%, 2013 48%, 2011
Maximum Humidity 95% 08:00 91% 97%, 2013 83%, 2012
Mean Humidity 87% 74% 87%, 2018 65%, 2015
Minimum Pressure 1020 hPa 01:42 1019 hPa 1028 hPa, 2009 995 hPa, 2017
Maximum Pressure 1025 hPa 13:06 1023 hPa 1034 hPa, 2009 1007 hPa, 2017
Mean Pressure 1023 hPa 1021 hPa 1031 hPa, 2009 1004 hPa, 2017
Mean Wind Speed 1.6 mph (-2.3) 3.9 mph (-0.0) 10.8 mph, 2011 1.6 mph, 2018
Maximum Wind Speed 11.5 mph 02:47 11.8 mph 22.1 mph, 2011 6.7 mph, 2013
Maximum Gust 19.6 mph 02:48 18.6 mph 37.4 mph, 2011 8.7 mph, 2013
Mean Wind Direction N
Rainfall 2.8 mm 4.0 mm (18%) 2.8 mm, 2018
Maximum Hourly Rain 0.8 mm 06:24 2.3 mm, 2012
Maximum 10-min Rain 0.2 mm 04:17 2.3 mm, 2012
Maximum Rain Rate 1.1 mm/h 06:24 60 mm/h, 2012
Minimum Dew Point 7.7 °C 23:04 9.2 °C 11.7 °C, 2013 2.6 °C, 2012
Maximum Dew Point 15.1 °C 00:04 13.7 °C 17.2 °C, 2011 11.3 °C, 2012
Mean Dew Point 10.8 °C 11.3 °C 13.2 °C, 2016 6.7 °C, 2012
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) * 11.4 °C * 07:41 12.0 °C 15.5 °C, 2015 8.5 °C, 2012
Day Maximum (09-21) * 14.6 °C * 16:20 20.9 °C 24.4 °C, 2016 14.6 °C, 2018
Max 10m Temp Rise 0.3 °C 09:50 0.6 °C 0.8 °C, 2012 0.3 °C, 2018
Max 1hr Temp Rise 1.1 °C 09:50 2.4 °C 3.4 °C, 2012 1.1 °C, 2018
Max 1hr Hum Rise 6% 20:27 9% 14%, 2017 5%, 2011
Max 10m Temp Fall 0.8 °C 02:56 0.5 °C 1.0 °C, 2012 0.4 °C, 2010
Max 1hr Temp Fall 2.3 °C 03:27 1.7 °C 2.6 °C, 2012 1.0 °C, 2013
Max 1hr Hum Fall 7% 12:04 12% 16%, 2014 6%, 2013
Max 10m Wind Speed 5.6 mph 02:55 8.4 mph 14.8 mph, 2011 5.3 mph, 2013
Minimum Feels-like 8.5 °C 23:30 12.6 °C 15.0 °C, 2011 6.1 °C, 2012
Maximum Feels-like 20.3 °C 00:00 23.6 °C 28.9 °C, 2016 18.3 °C, 2012
Mean Feels-like 14.8 °C 18.3 °C 20.6 °C, 2016 13.3 °C, 2012
Air-frost Hrs 0 hrs 0 hrs 0 hrs, 2009 0 hrs, 2009
Measure Value (anomaly) Month cumul. Record High Record Low
Temperature Range 7.2 °C (-0.8) 9.3 °C (+0.9) 14.4 °C (+6.4), 2016 5.7 °C (-2.3), 2013
Humidity Range 23% 37% 44%, 2011 23%, 2018
Pressure Range 5 hPa 4 hPa 12 hPa, 2017 2 hPa, 2016
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 0.1 [1%]69 hrs (119%) [48%] 10 [86%], 2009 0.1 [1%], 2018
Wet Hours 6
[Mean rain rate: 0.5 mm/h]
8 hrs (49%) [2.8%] 6, 2018 0, 2009
Cloud Cover Overcast
Events None
Comments o.night 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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