Sun 15 Sep, London dew point forecast

AM early DPMax 12°C TempMin 12°C
8AM DP 11°C 10AM DP 11°C
12PM DP 12°C 14PM DP 12°C
Overnight to 8AMDPMax 20°C TempMin 20°C
Reducing internal dew points, as displayed on hygrometers, is key to reducing condensation and mould risk. Even the best ventilation won’t reduce the internal dew points below external dew points without dehumidification. This is because dew points correspond to vapour quantity. When air is vented out, it is replaced by air from the outside, which, when it is raining, is saturated with vapour.

				








		

		

		

		

	

	


	

	

	












Example data logger spreadsheet for Excel 365 – Nov 2023 2311XXDLXXDownload