Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
September
Weather in September
Temperature
With September's arrival, Hersham's weather records an average high-temperature of a comfortable 18.7°C (65.7°F), marking little difference from August's 21.6°C (70.9°F). September in Hersham witnesses an average low-temperature hovering around a fresh 11.2°C (52.2°F).Humidity
In Hersham, the average relative humidity in September is 78%.Rainfall
In Hersham, in September, during 10.5 rainfall days, 20mm (0.79") of precipitation is typically accumulated. In Hersham, during the entire year, the rain falls for 156.9 days and collects up to 304mm (11.97") of precipitation.Snowfall
In Hersham, United Kingdom, snow does not fall in April through November.Daylight
In Hersham, the average length of the day in September is 12h and 38min.On the first day of the month, sunrise is at 6:15 am and sunset at 7:47 pm. On the last day of September, in Hersham, sunrise is at 7:01 am and sunset at 6:41 pm BST.
Sunshine
In September, the average sunshine is 7.5h.UV index
In September, the average daily maximum UV index in Hersham is 4. A UV Index estimate of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for ordinary individuals.Note: A maximum UV index of 4 in September translates into the following recommendations:
Adopt protective measures - It is advised to guard against sun damage. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Hersham in September?
What is the average humidity in September in Hersham?
How much does it rain in Hersham in September?
When it does not snow in Hersham?
What is the average length of the day in September in Hersham?
When is the sunrise / sunset in September in Hersham?
How many hours of sunshine does Hersham have in September?
What is the UV index intensity in September in Hersham?
Average temperature in September
Hersham, United Kingdom
- Average high temperature in September: 18.7°C
The warmest month (with the highest average high temperature) is July (21.8°C).
The month with the lowest average high temperature is January (6.8°C).
- Average low temperature in September: 11.2°C
The month with the highest average low temperature is August (13.7°C).
The coldest month (with the lowest average low temperature) is January (2.3°C).
Average pressure in September
Hersham, United Kingdom
- Average pressure in September: 1017mbar
The month with the highest atmospheric pressure is September (1017mbar).
The month with the lowest atmospheric pressure is November (1010.6mbar).
Average wind speed in September
Hersham, United Kingdom
- Average wind speed in September: 12.8km/h
The windiest month (with the highest average wind speed) is February (17.5km/h).
The calmest month (with the lowest average wind speed) is July (12.7km/h).
Average humidity in September
Hersham, United Kingdom
- Average humidity in September: 78%
The month with the highest relative humidity is December (89%).
The months with the lowest relative humidity are July and August (74%).
Average rainfall in September
Hersham, United Kingdom
- Average rainfall in September: 20mm
The wettest month (with the highest rainfall) is November (33mm).
The driest month (with the least rainfall) is April (17mm).
Average rainfall days in September
Hersham, United Kingdom
- Average rainfall days in September: 10.5 days
The month with the highest number of rainy days is July (15.3 days).
The month with the least rainy days is September (10.5 days).
Average snowfall in September
Hersham, United Kingdom
- Average snowfall in September: 0mm
The month with the highest snowfall is February (12mm).
The months with the least snowfall are April, May, June, July, August, September, October and November (0mm).
Average snowfall days in September
Hersham, United Kingdom
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (2.5 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
Hersham, United Kingdom
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 16h and 30min).
The month with the shortest days is December (Average daylight: 8h and 0min).
- Average sunshine in September: 7h and 3min
The month with the most sunshine is July (Average sunshine: 8h and 24min).
The month with the least sunshine is February (Average sunshine: 3h and 42min).
Average sunshine days in September
Hersham, United Kingdom
- Average sunshine days in September: 16.4 days
The month with the most sunshine days is September (16.4 days).
The month with the least sunshine days is February (11.1 days).
Average UV index in September
Hersham, 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
Hersham, United Kingdom
- Average cloud cover in September: 48
The months with the most cloud cover are February and November (Cloud cover 60).
The month with the least cloud cover is July (Cloud cover 47).
Average visibility in September
Hersham, United Kingdom
- Average visibility in September: 9km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October and December (9km).
The month with the lowest visibility is November (8km).
