September weather forecastWhempstead, United Kingdom
September
Weather in September
The first month of the autumn, September, is still a comfortable month in Whempstead, United Kingdom, with an average temperature fluctuating between 18.5°C (65.3°F) and 11°C (51.8°F).Temperature
Shifting into September, Whempstead records an average high-temperature of a refreshing 18.5°C (65.3°F), presenting minor fluctuations compared to the previous month. The low-temperature averages to a fresh 11°C (51.8°F) during the nights of September.Humidity
In September, the average relative humidity is 78%.Rainfall
In Whempstead, United Kingdom, during September, the rain falls for 8.1 days and regularly aggregates up to 10mm (0.39") of precipitation. Throughout the year, there are 115.9 rainfall days, and 163mm (6.42") of precipitation is accumulated.Snowfall
In Whempstead, United Kingdom, snow does not fall in April through October.Daylight
In September, the average length of the day in Whempstead is 12h and 39min.On the first day of September, sunrise is at 6:13 am and sunset at 7:47 pm. On the last day of the month, sunrise is at 7:00 am and sunset at 6:39 pm BST.
Sunshine
The average sunshine in September in Whempstead, United Kingdom, is 7.2h.UV index
The average daily maximum UV index in September in Whempstead is 4. A UV Index reading of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for the average person.Note: A daily maximum UV index of 4 in September translates into the following instructions:
Exercise prudence. Persons with fair skin could be burned in under 30 minutes. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Whempstead, United Kingdom
- Average high temperature in September: 18.5°C
The warmest month (with the highest average high temperature) is July (21.6°C).
The month with the lowest average high temperature is January (6.3°C).
- Average low temperature in September: 11°C
The month with the highest average low temperature is August (13.5°C).
The coldest month (with the lowest average low temperature) is January (1.7°C).
Average pressure in September
Whempstead, United Kingdom
- Average pressure in September: 1016.7mbar
The months with the highest atmospheric pressure are May and September (1016.7mbar).
The month with the lowest atmospheric pressure is November (1010.4mbar).
Average wind speed in September
Whempstead, United Kingdom
- Average wind speed in September: 13.2km/h
The windiest month (with the highest average wind speed) is February (18.2km/h).
The calmest month (with the lowest average wind speed) is July (12.9km/h).
Average humidity in September
Whempstead, United Kingdom
- Average humidity in September: 78%
The month with the highest relative humidity is December (90%).
The month with the lowest relative humidity is August (75%).
Average rainfall in September
Whempstead, United Kingdom
- Average rainfall in September: 10mm
The wettest month (with the highest rainfall) is December (20mm).
The driest month (with the least rainfall) is April (9mm).
Average rainfall days in September
Whempstead, United Kingdom
- Average rainfall days in September: 8.1 days
The month with the highest number of rainy days is July (11.7 days).
The month with the least rainy days is September (8.1 days).
Average snowfall in September
Whempstead, United Kingdom
- Average snowfall in September: 0mm
The month with the highest snowfall is February (11mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in September
Whempstead, United Kingdom
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (2.9 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
Whempstead, 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 54min).
- Average sunshine in September: 7h and 12min
The month with the most sunshine is August (Average sunshine: 8h and 0min).
The month with the least sunshine is February (Average sunshine: 3h and 36min).
Average sunshine days in September
Whempstead, United Kingdom
- Average sunshine days in September: 18.6 days
The month with the most sunshine days is March (19.4 days).
The month with the least sunshine days is July (14.7 days).
Average UV index in September
Whempstead, 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
Whempstead, United Kingdom
- Average cloud cover in September: 48
The month with the most cloud cover is February (Cloud cover 61).
The month with the least cloud cover is September (Cloud cover 48).
Average visibility in September
Whempstead, 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).
