Daily Report for 18th August 2017

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 14.4 °C (+1.2) 16:45 13.5 °C (-0.0) 20.0 °C (+6.8), 2012 11.4 °C (-1.8), 2014
Maximum Temperature 21.0 °C (-1.3) 13:37 21.4 °C (-1.1) 30.0 °C (+7.7), 2012 17.1 °C (-5.2), 2011
Mean Temperature 16.6 °C (-0.1) 17.4 °C (-0.5) 25.0 °C, 2012 13.7 °C, 2011
Minimum Humidity 48% 13:38 50% 62%, 2011 40%, 2012
Maximum Humidity 83% 06:16 81% 93%, 2011 71%, 2015
Mean Humidity 69% 66% 82%, 2011 53%, 2012
Minimum Pressure 1009 hPa 13:42 1013 hPa 1017 hPa, 2009 1007 hPa, 2010
Maximum Pressure 1013 hPa 05:26 1019 hPa 1020 hPa, 2009 1010 hPa, 2010
Mean Pressure 1012 hPa 1016 hPa 1018 hPa, 2009 1008 hPa, 2010
Mean Wind Speed 6.3 mph (+2.3) 4.4 mph (+0.4) 6.3 mph, 2017 3.1 mph, 2016
Maximum Wind Speed 13.4 mph 16:24 12.2 mph 14.3 mph, 2010 9.2 mph, 2009
Maximum Gust 22.0 mph 23:40 18.8 mph 22.4 mph, 2010 13.6 mph, 2009
Mean Wind Direction WSW
Rainfall 13.2 mm 69.3 mm (225%) 14.6 mm, 2011
Maximum Hourly Rain 9.9 mm 06:07 9.9 mm, 2017
Maximum 10-min Rain 5.9 mm 05:42 5.9 mm, 2017
Maximum Rain Rate 66 mm/h 05:35 66 mm/h, 2017
Minimum Dew Point 8.1 °C 23:09 7.8 °C 11.6 °C, 2012 5.6 °C, 2014
Maximum Dew Point 13.3 °C 08:54 13.2 °C 16.5 °C, 2012 10.5 °C, 2014
Mean Dew Point 10.8 °C 10.6 °C 14.5 °C, 2012 8.6 °C, 2014
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) * 15.5 °C * 06:57 13.7 °C 20.0 °C, 2012 11.4 °C, 2014
Day Maximum (09-21) 21.0 °C 13:37 21.4 °C 30.0 °C, 2012 17.1 °C, 2011
Max 10m Temp Rise 0.8 °C 17:23 0.6 °C 0.8 °C, 2017 0.3 °C, 2011
Max 1hr Temp Rise 2.2 °C 17:48 2.1 °C 2.8 °C, 2010 1.2 °C, 2015
Max 1hr Hum Rise 20% 14:38 8% 20%, 2017 6%, 2015
Max 10m Temp Fall 2.9 °C 13:56 0.7 °C 2.9 °C, 2017 0.2 °C, 2015
Max 1hr Temp Fall 4.4 °C 14:35 1.9 °C 4.4 °C, 2017 0.6 °C, 2015
Max 1hr Hum Fall 13% 10:09 10% 15%, 2016 6%, 2015
Max 10m Wind Speed 10.2 mph 16:32 9.1 mph 11.5 mph, 2010 6.1 mph, 2009
Minimum Feels-like 14.9 °C 16:40 14.4 °C 22.9 °C, 2012 11.5 °C, 2014
Maximum Feels-like 22.5 °C 12:15 23.5 °C 34.9 °C, 2012 18.7 °C, 2011
Mean Feels-like 18.3 °C 19.0 °C 28.7 °C, 2012 15.3 °C, 2011
Air-frost Hrs 0 hrs 0 hrs 0 hrs, 2009 0 hrs, 2009
Measure Value (anomaly) Month cumul. Record High Record Low
Temperature Range 6.6 °C (-2.4) 7.9 °C (-1.0) 10.0 °C (+1.0), 2012 4.9 °C (-4.1), 2015
Humidity Range 35% 31% 50%, 2010 24%, 2015
Pressure Range 4 hPa 6 hPa 5 hPa, 2012 2 hPa, 2015
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 6 [46%]98 hrs (90%) [40%] 12 [91%], 2012 0 [0%], 2011
Wet Hours 2
[Mean rain rate: 7 mm/h]
28 hrs (125%) [6.4%] 2.5, 2011 0, 2009
Cloud Cover Partly Cloudy
Events None
Comments Heavy Showers 0530 & 14
Extra Comments
Issues Rn data from N16
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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Daily Graph of Conditions

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Webcam Summary of Cloud Conditions

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