September weather forecastHarrietsham, United Kingdom
September
Weather in September
The first month of the autumn, September, is still a refreshing month in Harrietsham, United Kingdom, with an average temperature varying between 12.5°C (54.5°F) and 18.2°C (64.8°F).Temperature
September welcomes an average high-temperature of a refreshing 18.2°C (64.8°F), not much different from the preceding month. September witnesses an average low-temperature hovering around a fresh 12.5°C (54.5°F).Humidity
In Harrietsham, the average relative humidity in September is 79%.Rainfall
In September, the rain falls for 11.5 days. Throughout September, 22mm (0.87") of precipitation is accumulated. In Harrietsham, during the entire year, the rain falls for 165.3 days and collects up to 370mm (14.57") of precipitation.Snowfall
May through October are months without snowfall.Daylight
The average length of the day in September in Harrietsham is 12h and 38min.On the first day of September in Harrietsham, sunrise is at 6:11 am and sunset at 7:42 pm. On the last day of the month, sunrise is at 6:57 am and sunset at 6:37 pm BST.
Sunshine
In September, the average sunshine in Harrietsham is 8.2h.UV index
In Harrietsham, the average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for average individuals.Note: The maximum UV index of 4 during September translates into these guidelines:
Preventative actions are necessary - Recommendations to ward off sunburn are given. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. Always opt for UVA and UVB-resistant sunglasses on radiant days.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Harrietsham, United Kingdom
- Average high temperature in September: 18.2°C
The warmest month (with the highest average high temperature) is August (20.7°C).
The month with the lowest average high temperature is January (7.1°C).
- Average low temperature in September: 12.5°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 (3.3°C).
Average pressure in September
Harrietsham, United Kingdom
- Average pressure in September: 1017.2mbar
The month with the highest atmospheric pressure is September (1017.2mbar).
The month with the lowest atmospheric pressure is November (1011mbar).
Average wind speed in September
Harrietsham, United Kingdom
- Average wind speed in September: 15.9km/h
The windiest month (with the highest average wind speed) is December (21.2km/h).
The calmest month (with the lowest average wind speed) is July (14.9km/h).
Average humidity in September
Harrietsham, United Kingdom
- Average humidity in September: 79%
The months with the highest relative humidity are January and December (87%).
The month with the lowest relative humidity is August (77%).
Average rainfall in September
Harrietsham, United Kingdom
- Average rainfall in September: 22mm
The wettest month (with the highest rainfall) is December (42mm).
The driest month (with the least rainfall) is April (20mm).
Average rainfall days in September
Harrietsham, United Kingdom
- Average rainfall days in September: 11.5 days
The month with the highest number of rainy days is November (16.4 days).
The month with the least rainy days is September (11.5 days).
Average snowfall in September
Harrietsham, United Kingdom
- Average snowfall in September: 0mm
The month with the highest snowfall is February (17mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in September
Harrietsham, United Kingdom
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (3.4 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
Harrietsham, United Kingdom
- Average daylight in September: 12h and 36min
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: 8h and 12min
The month with the most sunshine is August (Average sunshine: 9h and 6min).
The month with the least sunshine is February (Average sunshine: 3h and 48min).
Average sunshine days in September
Harrietsham, United Kingdom
- Average sunshine days in September: 15.3 days
The month with the most sunshine days is April (15.6 days).
The month with the least sunshine days is November (10.1 days).
Average UV index in September
Harrietsham, 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
Harrietsham, United Kingdom
- Average cloud cover in September: 41
The month with the most cloud cover is February (Cloud cover 60).
The month with the least cloud cover is August (Cloud cover 40).
Average visibility in September
Harrietsham, United Kingdom
- Average visibility in September: 9km
The months with the highest visibility are June, July and August (10km).
The months with the lowest visibility are January, February, March, April, May, September, October, November and December (9km).
