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 in Colchester, United Kingdom, registers an average high-temperature of an enjoyable 18.5°C (65.3°F), slightly varied from August's 21.2°C (70.2°F). The month of September records an average low-temperature of 12.5°C (54.5°F) in Colchester.Humidity
In September, the average relative humidity in Colchester is 77%.Rainfall
In September, in Colchester, the rain falls for 12.9 days. Throughout September, 31mm (1.22") of precipitation is accumulated. In Colchester, during the entire year, the rain falls for 182 days and collects up to 445mm (17.52") of precipitation.Snowfall
April through October are months without snowfall.Daylight
In September, the average length of the day is 12h and 39min.On the first day of the month, sunrise is at 6:09 am and sunset at 7:43 pm. On the last day of September, in Colchester, sunrise is at 6:56 am and sunset at 6:35 pm BST.
Sunshine
In Colchester, the average sunshine in September is 7.7h.UV index
The average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for the average person.Note: The daily high UV index of 4 during September translates into the following recommendations:
Be careful. Light complexion individuals might get burns in fewer than 30 minutes. Minimize direct exposure to the Sun during midday when its radiation is at its peak. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage.
Frequently asked questions
What is the average September temperature in Colchester?
What is the average humidity in September in Colchester?
How many days does it rain in September in Colchester?
When it does not snow in Colchester?
What is the average length of the day in September in Colchester?
What time are sunrise and sunset in September in Colchester?
How long on average sun shines in September in Colchester?
What is the UV index intensity in September in Colchester?
Average temperature in September
Colchester, United Kingdom
- Average high temperature in September: 18.5°C
The warmest month (with the highest average high temperature) is August (21.2°C).
The month with the lowest average high temperature is January (6.4°C).
- Average low temperature in September: 12.5°C
The month with the highest average low temperature is August (14.5°C).
The coldest month (with the lowest average low temperature) is January (2.9°C).
Average pressure in September
Colchester, United Kingdom
- Average pressure in September: 1016.8mbar
The month with the highest atmospheric pressure is September (1016.8mbar).
The month with the lowest atmospheric pressure is November (1010.5mbar).
Average wind speed in September
Colchester, United Kingdom
- Average wind speed in September: 15.3km/h
The windiest month (with the highest average wind speed) is December (21km/h).
The calmest month (with the lowest average wind speed) is July (14.1km/h).
Average humidity in September
Colchester, United Kingdom
- Average humidity in September: 77%
The months with the highest relative humidity are January and December (87%).
The month with the lowest relative humidity is August (75%).
Average rainfall in September
Colchester, United Kingdom
- Average rainfall in September: 31mm
The wettest month (with the highest rainfall) is July (54mm).
The driest month (with the least rainfall) is April (18mm).
Average rainfall days in September
Colchester, United Kingdom
- Average rainfall days in September: 12.9 days
The month with the highest number of rainy days is July (19.8 days).
The month with the least rainy days is February (11.8 days).
Average snowfall in September
Colchester, United Kingdom
- Average snowfall in September: 0mm
The month with the highest snowfall is February (16mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in September
Colchester, United Kingdom
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (3.7 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
Colchester, United Kingdom
- Average daylight in September: 12h and 4min
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 4min
The month with the most sunshine is August (Average sunshine: 8h and 36min).
The month with the least sunshine is February (Average sunshine: 3h and 48min).
Average sunshine days in September
Colchester, United Kingdom
- Average sunshine days in September: 13.2 days
The month with the most sunshine days is March (14.3 days).
The month with the least sunshine days is July (7.9 days).
Average UV index in September
Colchester, 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
Colchester, United Kingdom
- Average cloud cover in September: 44
The month with the most cloud cover is February (Cloud cover 61).
The months with the least cloud cover are August and September (Cloud cover 44).
Average visibility in September
Colchester, United Kingdom
- Average visibility in September: 9km
The month with the highest visibility is August (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, September, October, November and December (9km).
Colchester, United Kingdom
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