| Measure | Value (anomaly) | Time | Month cumul. | Record High | Record Low | 
			| Minimum Temperature | 5.2 °C (-1.1) | 06:26 | 4.9 °C (-1.6) | 11.1 °C (+4.8), 2015 | 2.3 °C (-4.0), 2016 | 
			| Maximum Temperature | 13.7 °C (+2.3) | 14:12 | 12.5 °C (+0.8) | 16.8 °C (+5.4), 2015 | 8.1 °C (-3.3), 2016 | 
			| Mean Temperature | 9.3 °C (+0.6) |  | 8.9 °C (-0.4) | 15.1 °C, 2015 | 4.8 °C, 2010 | 
			| Minimum Humidity | 81% | 13:49 | 73% | 87%, 2024 | 59%, 2014 | 
			| Maximum Humidity | 95% | 23:08 | 94% | 97%, 2010 | 78%, 2016 | 
			| Mean Humidity | 89% |  | 86% | 93%, 2024 | 73%, 2016 | 
			| Minimum Pressure | 1019 hPa | 23:51 | 1017 hPa | 1030 hPa, 2024 | 989 hPa, 2014 | 
			| Maximum Pressure | 1023 hPa | 00:03 | 1028 hPa | 1033 hPa, 2024 | 996 hPa, 2009 | 
			| Mean Pressure | 1021 hPa |  | 1022 hPa | 1031 hPa, 2024 | 993 hPa, 2014 | 
			| Mean Wind Speed | 0.8 mph (-3.8) |  | 3.3 mph (-1.3) | 8.0 mph, 2018 | 0.8 mph, 2020 | 
			| Maximum Wind Speed | 5.0 mph | 01:06 | 9.1 mph | 21.0 mph, 2015 | 5.0 mph, 2020 | 
			| Maximum Gust | 8.0 mph | 10:03 | 18.2 mph | 33.4 mph, 2018 | 8.0 mph, 2020 | 
			| Mean Wind Direction | ESE |  |  |  |  | 
			| Rainfall | 0.0 mm |  | 4.2 mm (27%) | 9.2 mm, 2019 |  | 
			| Maximum Hourly Rain | n/a |  |  | 5.1, 2019 |  | 
			| Maximum 10-min Rain | n/a |  |  | 1.6, 2015 |  | 
			| Maximum Rain Rate | n/a |  |  | 18, 2015 |  | 
			| Minimum Dew Point | 3.8 °C | 06:12 | 3.1 °C | 9.3 °C, 2015 | -1.1 °C, 2016 | 
			| Maximum Dew Point | 10.7 °C | 14:26 | 9.6 °C | 15.0 °C, 2015 | 2.9 °C, 2016 | 
			| Mean Dew Point | 7.5 °C |  | 6.5 °C | 13.2 °C, 2015 | 1.1 °C, 2016 | 
	 | Measure | Value | Time | Month cumul. | Record High | Record Low | 
			| Night Minimum (21-09) | 5.2 °C | 06:30 | 6.3 °C | 14.5 °C, 2015 | 2.7 °C, 2010 | 
			| Day Maximum (09-21) | 13.7 °C | 14:14 | 12.5 °C | 16.8 °C, 2015 | 8.1 °C, 2016 | 
			| Max 10m Temp Rise | 0.4 °C | 09:28 | 0.5 °C | 1.3 °C, 2009 | 0.2 °C, 2011 | 
			| Max 1hr Temp Rise | 2.0 °C | 11:17 | 1.8 °C | 3.1 °C, 2009 | 0.7 °C, 2024 | 
			| Max 1hr Hum Rise | 4% | 03:17 | 6% | 9%, 2017 | 2%, 2015 | 
			| Max 10m Temp Fall | 0.3 °C | 02:23 | 0.6 °C | 1.0 °C, 2013 | 0.2 °C, 2012 | 
			| Max 1hr Temp Fall | 1.1 °C | 17:10 | 1.7 °C | 2.5 °C, 2013 | 0.6 °C, 2024 | 
			| Max 1hr Hum Fall | 4% | 10:47 | 8% | 17%, 2009 | 4%, 2015 | 
			| Max 10m Wind Speed | 0.0 mph | 10:03 | 3.4 mph | 14.8 mph, 2015 | 0.0 mph, 2020 | 
			| Minimum Feels-like | 5.2 °C | 06:20 | 4.4 °C | 12.1 °C, 2015 | -2.4 °C, 2016 | 
			| Maximum Feels-like | 15.3 °C | 14:26 | 13.9 °C | 20.8 °C, 2015 | 6.2 °C, 2016 | 
			| Mean Feels-like | 9.9 °C |  | 9.5 °C | 18.1 °C, 2015 | 1.8 °C, 2016 | 
			| Air-frost Hrs | 0 hrs |  | 0 hrs | 0 hrs, 2009 | 0 hrs, 2009 | 
 | Measure | Value (anomaly) | Month cumul. | Record High | Record Low | 
			| Temperature Range | 8.5 °C (+3.4) | 7.6 °C (+2.4) | 8.5 °C (+3.4), 2020 | 2.4 °C (-2.7), 2024 | 
			| Humidity Range | 14% | 21% | 36%, 2014 | 6%, 2015 | 
			| Pressure Range | 4 hPa | 12 hPa | 18 hPa, 2010 | 4 hPa, 2020 | 
 | Measure | Value [% of max] | Month cumul. | Record High | Record Low | 
				| Sun Hours | 7 [85%] | 29 hrs (138%) [49%] | 7 [85%], 2009 | 0 [0%], 2011 | 
				| Wet Hours | 0 | 5.5 hrs (37%) [3.3%] | 7, 2015 | 0, 2010 | 
				| Cloud Cover | Sunny with periods of Hazy | 
				| Events | None | 
				| Comments | - | 
				| Extra Comments |  | 
				| Issues | wind sensor not reporting properly - v low speeds | 
				| Observer Absent? | Yes - observations may be unreliable | 
				| Pond Temperature @ Hampstead Heath | 10.5 °C |