September weather forecastPolstead, United Kingdom
September
Weather in September
The first month of the autumn, September, is still a comfortable month in Polstead, United Kingdom, with an average temperature ranging between min 12.5°C (54.5°F) and max 18.5°C (65.3°F).Temperature
As August transitions into September, Polstead records an average high-temperature of a refreshing 18.5°C (65.3°F), showing a gentle shift from the preceding month. During September, Polstead observes a consistent average nighttime temperature of 12.5°C (54.5°F).Humidity
In Polstead, United Kingdom, the average relative humidity in September is 77%.Rainfall
In Polstead, in September, it is raining for 12.9 days, with typically 31mm (1.22") of accumulated precipitation. In Polstead, during the entire year, the rain falls for 182 days and collects up to 445mm (17.52") of precipitation.Snowfall
April through October are months without snowfall.Daylight
The average length of the day in September in Polstead is 12h and 39min.On the first day of the month, sunrise is at 6:09 am and sunset at 7:43 pm. On the last day of September, in Polstead, sunrise is at 6:56 am and sunset at 6:35 pm BST.
Sunshine
In September, the average sunshine in Polstead is 7.7h.UV index
The average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for the average person.Note: An average UV index of 4 in September transforms into this advice:
Ensure safety - Sun damage prevention is strongly urged. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Polstead, United Kingdom
- Average high temperature in September: 18.5°C
The warmest month (with the highest average high temperature) is August (21.2°C).
The month with the lowest average high temperature is January (6.4°C).
- Average low temperature in September: 12.5°C
The month with the highest average low temperature is August (14.5°C).
The coldest month (with the lowest average low temperature) is January (2.9°C).
Average pressure in September
Polstead, United Kingdom
- Average pressure in September: 1016.8mbar
The month with the highest atmospheric pressure is September (1016.8mbar).
The month with the lowest atmospheric pressure is November (1010.5mbar).
Average wind speed in September
Polstead, United Kingdom
- Average wind speed in September: 15.3km/h
The windiest month (with the highest average wind speed) is December (21km/h).
The calmest month (with the lowest average wind speed) is July (14.1km/h).
Average humidity in September
Polstead, United Kingdom
- Average humidity in September: 77%
The months with the highest relative humidity are January and December (87%).
The month with the lowest relative humidity is August (75%).
Average rainfall in September
Polstead, United Kingdom
- Average rainfall in September: 31mm
The wettest month (with the highest rainfall) is July (54mm).
The driest month (with the least rainfall) is April (18mm).
Average rainfall days in September
Polstead, United Kingdom
- Average rainfall days in September: 12.9 days
The month with the highest number of rainy days is July (19.8 days).
The month with the least rainy days is February (11.8 days).
Average snowfall in September
Polstead, United Kingdom
- Average snowfall in September: 0mm
The month with the highest snowfall is February (16mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in September
Polstead, United Kingdom
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (3.7 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Polstead, United Kingdom
- Average daylight in September: 12h and 36min
The month with the longest days is June (Average daylight: 16h and 36min).
The month with the shortest days is December (Average daylight: 7h and 48min).
- Average sunshine in September: 7h and 42min
The month with the most sunshine is August (Average sunshine: 8h and 36min).
The month with the least sunshine is February (Average sunshine: 3h and 48min).
Average sunshine days in September
Polstead, United Kingdom
- Average sunshine days in September: 13.2 days
The month with the most sunshine days is March (14.3 days).
The month with the least sunshine days is July (7.9 days).
Average UV index in September
Polstead, United Kingdom
- Average UV index in September: 4
The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in September
Polstead, United Kingdom
- Average cloud cover in September: 44
The month with the most cloud cover is February (Cloud cover 61).
The months with the least cloud cover are August and September (Cloud cover 44).
Average visibility in September
Polstead, United Kingdom
- Average visibility in September: 9km
The month with the highest visibility is August (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, September, October, November and December (9km).
