September weather forecastCoolham, United Kingdom
September
Weather in September
The first month of the autumn, September, is still a refreshing month in Coolham, United Kingdom, with an average temperature varying between 18.7°C (65.7°F) and 11.1°C (52°F).Temperature
The advent of September sees the average high-temperature at a refreshing 18.7°C (65.7°F), subtly shifted from August's 21°C (69.8°F). In Coolham, September's nights observe an average temperature dip to a fresh 11.1°C (52°F).Humidity
In September, the average relative humidity is 79%.Rainfall
In Coolham, United Kingdom, in September, during 10.6 rainfall days, 20mm (0.79") of precipitation is typically accumulated. In Coolham, during the entire year, the rain falls for 163.7 days and collects up to 347mm (13.66") of precipitation.Snowfall
May through October are months without snowfall in Coolham.Daylight
In September, the average length of the day is 12h and 38min.On the first day of the month, sunrise is at 6:16 am and sunset at 7:46 pm. On the last day of September, sunrise is at 7:01 am and sunset at 6:41 pm BST.
Sunshine
The average sunshine in September in Coolham is 7.5h.UV index
In Coolham, the average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for average individuals.Note: In September, the UV index of 4 transforms into the following advice:
Act with care - The suggestion to avoid sunburn is emphasized. Minimize direct exposure to the Sun during midday when its radiation is at its peak. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Coolham, United Kingdom
- Average high temperature in September: 18.7°C
The warmest month (with the highest average high temperature) is July (21.3°C).
The month with the lowest average high temperature is January (7.2°C).
- Average low temperature in September: 11.1°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 (2.7°C).
Average pressure in September
Coolham, 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 (1010.8mbar).
Average wind speed in September
Coolham, United Kingdom
- Average wind speed in September: 13.5km/h
The windiest month (with the highest average wind speed) is February (18.1km/h).
The calmest months (with the lowest average wind speed) are July and August (13.3km/h).
Average humidity in September
Coolham, 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
Coolham, United Kingdom
- Average rainfall in September: 20mm
The wettest month (with the highest rainfall) is December (42mm).
The driest month (with the least rainfall) is April (18mm).
Average rainfall days in September
Coolham, United Kingdom
- Average rainfall days in September: 10.6 days
The month with the highest number of rainy days is November (16.6 days).
The month with the least rainy days is September (10.6 days).
Average snowfall in September
Coolham, United Kingdom
- Average snowfall in September: 0mm
The month with the highest snowfall is January (15mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in September
Coolham, 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
Coolham, 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: 7h and 30min
The month with the most sunshine is July (Average sunshine: 8h and 36min).
The month with the least sunshine is February (Average sunshine: 3h and 42min).
Average sunshine days in September
Coolham, United Kingdom
- Average sunshine days in September: 16.1 days
The month with the most sunshine days is September (16.1 days).
The months with the least sunshine days are February and November (10.7 days).
Average UV index in September
Coolham, 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
Coolham, United Kingdom
- Average cloud cover in September: 47
The months with the most cloud cover are February and November (Cloud cover 61).
The months with the least cloud cover are April, July, August and September (Cloud cover 47).
Average visibility in September
Coolham, 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).
