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
Weather in September
Temperature
September's weather records an average high-temperature of a refreshing 18.5°C (65.3°F), showing little deviation from August. In September, Horsted Keynes reports a consistent average low-temperature of 11.2°C (52.2°F) during the nights.Humidity
In September, the average relative humidity in Horsted Keynes is 79%.Rainfall
In Horsted Keynes, in September, during 10.5 rainfall days, 25mm (0.98") of precipitation is typically accumulated. In Horsted Keynes, during the entire year, the rain falls for 163.1 days and collects up to 393mm (15.47") of precipitation.Snowfall
In Horsted Keynes, snow does not fall in May through October.Daylight
The average length of the day in September in Horsted Keynes is 12h and 38min.On the first day of September in Horsted Keynes, sunrise is at 6:14 am and sunset at 7:45 pm. On the last day of the month, sunrise is at 6:59 am and sunset at 6:39 pm BST.
Sunshine
In Horsted Keynes, the average sunshine in September is 7.5h.UV index
In September, the average daily maximum UV index in Horsted Keynes is 4. A UV Index estimate of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for the ordinary person.Note: A daily maximum UV index of 4 in September translates into the following instructions:
Guard yourself - Avoiding sunburn is suggested. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
Frequently asked questions
What is the usual temperature for Horsted Keynes in September?
What is the average humidity in September in Horsted Keynes?
How much does it rain in Horsted Keynes in September?
When it does not snow in Horsted Keynes?
What is the average length of the day in September in Horsted Keynes?
What time are sunrise and sunset in September in Horsted Keynes?
How many hours of sunshine does Horsted Keynes have in September?
What is the UV index reading in September in Horsted Keynes?
Average temperature in September
Horsted Keynes, United Kingdom
- Average high temperature in September: 18.5°C
The warmest months (with the highest average high temperature) are July and August (21.3°C).
The month with the lowest average high temperature is January (6.9°C).
- Average low temperature in September: 11.2°C
The month with the highest average low temperature is August (13.3°C).
The coldest month (with the lowest average low temperature) is January (2.3°C).
Average pressure in September
Horsted Keynes, United Kingdom
- Average pressure in September: 1017.1mbar
The month with the highest atmospheric pressure is September (1017.1mbar).
The month with the lowest atmospheric pressure is November (1010.8mbar).
Average wind speed in September
Horsted Keynes, United Kingdom
- Average wind speed in September: 13.4km/h
The windiest month (with the highest average wind speed) is February (18.2km/h).
The calmest months (with the lowest average wind speed) are July, August and September (13.4km/h).
Average humidity in September
Horsted Keynes, United Kingdom
- Average humidity in September: 79%
The month with the highest relative humidity is December (89%).
The months with the lowest relative humidity are July and August (77%).
Average rainfall in September
Horsted Keynes, United Kingdom
- Average rainfall in September: 25mm
The wettest month (with the highest rainfall) is December (45mm).
The driest month (with the least rainfall) is April (20mm).
Average rainfall days in September
Horsted Keynes, United Kingdom
- Average rainfall days in September: 10.5 days
The month with the highest number of rainy days is July (15.8 days).
The month with the least rainy days is September (10.5 days).
Average snowfall in September
Horsted Keynes, 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
Horsted Keynes, United Kingdom
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (3.9 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
Horsted Keynes, 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 30min).
The month with the least sunshine is February (Average sunshine: 3h and 36min).
Average sunshine days in September
Horsted Keynes, United Kingdom
- Average sunshine days in September: 16.1 days
The month with the most sunshine days is September (16.1 days).
The month with the least sunshine days is February (11.6 days).
Average UV index in September
Horsted Keynes, 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
Horsted Keynes, United Kingdom
- Average cloud cover in September: 47
The month with the most cloud cover is February (Cloud cover 62).
The months with the least cloud cover are July, August and September (Cloud cover 47).
Average visibility in September
Horsted Keynes, 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).
Horsted Keynes, United Kingdom
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