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The climate in United Kingdom is typically temperate; moderated by prevailing southwest winds over the North Atlantic Current; more than one-half of the days are overcast. The terrain: mostly rugged hills and low mountains; level to rolling plains in east and southeast. For London in January the daily average maximum temperatures is 7°C with the average minimum 3°C, while in June the average maximum is 19°C with a minimum of 11°C. The wettest month for London is October with an average of 87.3mm of precipitation falling while the driest month is March with 46.0mm falling.
The information presented below gives detailed historical monthly average weather conditions along with exceptional weather occurrences. To maintain relevance to current weather trends the displayed information has been calculated using data collected over the past two decades. The climate profile is taken from closest available data source to Eilean Bhr de.
Throughout the month of September daytime temperatures will generally reach highs of around 16°C that's about 61°F. At night the average minimum temperature drops down to around 9°C, that's 49°F.
In recent times the highest recorded temperature in September has been 21°C that's 70°F, with the lowest recorded temperature 0°C, about 33°F.
The average daily relative humidity for September is around 87%.
The Heat Index is a measure of how hot it feels when relative humidity is added to actual air temperature. From this a comfort level is calculated providing categories on how heat conditions might adversely affect someone.
Comfort Levels: Given average maximum temperatures and humidity levels generally you should not anticipate any discomfort from heat (see heat index for more information).
The average monthly amount of precipitation has been recorded at around 100 mm, that's 4 inches. Throughout the month you can expect to see rain or drizzle falling on 21 days of the month.
The average daily wind speed in September has been around 22 km/h, that’s the equivalent to about 14 mph, or 12 knots. In recent years the maximum sustained wind speed has reached 96 km/h, that’s the equivalent of around 60 mph, or 52 knots.
On average the month of September is affected by foggy conditions on 5 days.
The following charts show yearly weather trends with information on monthly weather averages and extremes.
The chart below plots the average high and low temperature for each month of the year. It also shows the maximum and minimum recorded temperatures.
The chart below plots the average monthly precipitation amount.
The chart below plots the average number of days in any month that you can expect to see rain falling.
The chart below plots the average number of days in any month that you can expect to see snow falling.
The chart below plots the average daily wind speed you can expect for any month. It also shows the maximum recorded sustained wind speed for each month.