September weather forecastMendlesham, United Kingdom
September
Weather in September
September, the first month of the autumn in Mendlesham, is also an enjoyable month, with an average temperature varying between 12.3°C (54.1°F) and 18.3°C (64.9°F).Temperature
The shift into September reveals an average high-temperature of a refreshing 18.3°C (64.9°F), closely mirroring August's climate. Mendlesham's average low-temperature during September nights is observed to be a fresh 12.3°C (54.1°F).Humidity
In September, the average relative humidity in Mendlesham is 78%.Rainfall
In Mendlesham, in September, during 11.3 rainfall days, 17mm (0.67") of precipitation is typically accumulated. In Mendlesham, during the entire year, the rain falls for 159.6 days and collects up to 268mm (10.55") of precipitation.Snowfall
May through October are months without snowfall in Mendlesham.Daylight
In September, the average length of the day in Mendlesham is 12h and 39min.On the first day of September in Mendlesham, sunrise is at 6:08 am and sunset at 7:43 pm. On the last day of the month, sunrise is at 6:55 am and sunset at 6:35 pm BST.
Sunshine
In September, the average sunshine is 7.7h.UV index
In September, the average daily maximum UV index in Mendlesham is 4. A UV Index reading of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for ordinary individuals.Note: In September, a regular UV index of 4 translates into these guidelines:
Undertake precautions - Obligation exists to protect against skin and eye damage. Around midday, solar radiation is most harmful; hence, exposure should be limited. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Mendlesham, United Kingdom
- Average high temperature in September: 18.3°C
The warmest month (with the highest average high temperature) is August (20.9°C).
The month with the lowest average high temperature is January (6.4°C).
- Average low temperature in September: 12.3°C
The month with the highest average low temperature is August (14.3°C).
The coldest month (with the lowest average low temperature) is January (2.6°C).
Average pressure in September
Mendlesham, United Kingdom
- Average pressure in September: 1016.5mbar
The month with the highest atmospheric pressure is May (1016.6mbar).
The month with the lowest atmospheric pressure is November (1010.2mbar).
Average wind speed in September
Mendlesham, United Kingdom
- Average wind speed in September: 14.8km/h
The windiest month (with the highest average wind speed) is December (20.3km/h).
The calmest month (with the lowest average wind speed) is July (13.7km/h).
Average humidity in September
Mendlesham, United Kingdom
- Average humidity in September: 78%
The month with the highest relative humidity is December (88%).
The month with the lowest relative humidity is August (75%).
Average rainfall in September
Mendlesham, United Kingdom
- Average rainfall in September: 17mm
The wettest months (with the highest rainfall) are July and December (29mm).
The driest month (with the least rainfall) is April (12mm).
Average rainfall days in September
Mendlesham, United Kingdom
- Average rainfall days in September: 11.3 days
The month with the highest number of rainy days is July (16.3 days).
The month with the least rainy days is September (11.3 days).
Average snowfall in September
Mendlesham, United Kingdom
- Average snowfall in September: 0mm
The month with the highest snowfall is February (20mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in September
Mendlesham, United Kingdom
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (3.8 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
Mendlesham, United Kingdom
- Average daylight in September: 12h and 42min
The month with the longest days is June (Average daylight: 16h and 42min).
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 48min).
The month with the least sunshine is February (Average sunshine: 3h and 48min).
Average sunshine days in September
Mendlesham, United Kingdom
- Average sunshine days in September: 15.1 days
The months with the most sunshine days are March and April (15.3 days).
The month with the least sunshine days is July (10.6 days).
Average UV index in September
Mendlesham, 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, November and December (UV index 2).
Average cloud cover in September
Mendlesham, United Kingdom
- Average cloud cover in September: 44
The months with the most cloud cover are January and February (Cloud cover 60).
The month with the least cloud cover is August (Cloud cover 43).
Average visibility in September
Mendlesham, United Kingdom
- Average visibility in September: 9km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
