September weather forecast
Chester, United Kingdom

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Weather in September

The first month of the autumn, September, is also an enjoyable month in Chester, United Kingdom, with an average temperature fluctuating between 9.9°C (49.8°F) and 16.8°C (62.2°F).

Temperature

A minimal variation is noted in Chester's average high-temperature at the onset of September, reaching a still enjoyable 16.8°C (62.2°F) from August's 19°C (66.2°F). An average nighttime temperature of 9.9°C (49.8°F) is recorded during September.

Humidity

The average relative humidity in September in Chester, United Kingdom, is 83%.

Rainfall

In September, the rain falls for 15.6 days. Throughout September, 35mm (1.38") of precipitation is accumulated. In Chester, United Kingdom, during the entire year, the rain falls for 206.7 days and collects up to 474mm (18.66") of precipitation.

Snowfall

In Chester, snow does not fall in April through November.

Daylight

In Chester, the average length of the day in September is 12h and 40min.
On the first day of September, sunrise is at 6:22 am and sunset at 8:00 pm. On the last day of the month, sunrise is at 7:12 am and sunset at 6:50 pm BST.

Sunshine

The average sunshine in September is 6.9h.

UV index

In Chester, the average daily maximum UV index in September is 3. A UV Index estimate of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for the average person.
Note: The maximum UV index, 3 during September, leads to the following recommendations:
Undertake protective steps - Recommendations to avoid sunburn are issued. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. 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.
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Frequently asked questions

What is the usual temperature for Chester in September?

The average high-temperature and low-temperature during September are 16.8°C (62.2°F) and 9.9°C (49.8°F) respectively.

What is the average humidity in September in Chester?

In Chester, United Kingdom, the average relative humidity in September is 83%.

How many days does it rain in September in Chester?

In Chester, United Kingdom, in September, it is raining for 15.6 days, with typically 35mm (1.38") of accumulated precipitation.

When it does not snow in Chester?

In Chester, United Kingdom, snow does not fall in April through November.

How many hours of daylight does Chester have in September?

In Chester, United Kingdom, the average day length in September is 12h and 40min.

When is the sunrise / sunset in September in Chester?

In September, on the first day of the month, sunrise is at 6:22 am and sunset at 8:00 pm. On the last day of the month, in Chester, United Kingdom, sunrise is at 7:12 am and sunset at 6:50 pm BST.

How long on average sun shines in September in Chester?

The average sunshine duration in September in Chester, United Kingdom, is 6.9h.

What is the UV index reading in September in Chester?

In Chester, the average daily maximum UV index in September is 3. A UV Index of 3 to 5 symbolizes a moderate health threat from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Chester, United Kingdom

Average temperature in September - Chester, United Kingdom
  • Average high temperature in September: 16.8°C

The warmest month (with the highest average high temperature) is July (19.3°C).
The month with the lowest average high temperature is January (6.5°C).

  • Average low temperature in September: 9.9°C

The month with the highest average low temperature is August (11.8°C).
The coldest month (with the lowest average low temperature) is January (2.1°C).

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Average pressure in September
Chester, United Kingdom

Average pressure in September - Chester, United Kingdom
  • Average pressure in September: 1015.7mbar

The month with the highest atmospheric pressure is May (1016.2mbar).
The month with the lowest atmospheric pressure is November (1009.1mbar).

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Average wind speed in September
Chester, United Kingdom

Average wind speed in September - Chester, United Kingdom
  • Average wind speed in September: 13.1km/h

The windiest month (with the highest average wind speed) is February (17.3km/h).
The calmest month (with the lowest average wind speed) is June (11.9km/h).

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Average humidity in September
Chester, United Kingdom

Average humidity in September - Chester, United Kingdom
  • Average humidity in September: 83%

The months with the highest relative humidity are January and December (88%).
The month with the lowest relative humidity is May (80%).

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Average rainfall in September
Chester, United Kingdom

Average rainfall in September - Chester, United Kingdom
  • Average rainfall in September: 35mm

The wettest month (with the highest rainfall) is June (56mm).
The driest month (with the least rainfall) is April (27mm).

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Average rainfall days in September
Chester, United Kingdom

Average rainfall days in September - Chester, United Kingdom
  • Average rainfall days in September: 15.6 days

The month with the highest number of rainy days is August (20.5 days).
The month with the least rainy days is February (13.6 days).

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Average snowfall in September
Chester, United Kingdom

Average snowfall in September - Chester, United Kingdom
  • Average snowfall in September: 0mm

The month with the highest snowfall is January (25mm).
The months with the least snowfall are April, May, June, July, August, September, October and November (0mm).

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Average snowfall days in September
Chester, United Kingdom

Average snowfall days in September - Chester, United Kingdom
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is February (2.5 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).

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Average daylight in September /
Average sunshine in September
Chester, United Kingdom

Average daylight in September / Average sunshine in September - Chester, United Kingdom
  • Average daylight in September: 12h and 4min

The month with the longest days is June (Average daylight: 16h and 54min).
The month with the shortest days is December (Average daylight: 7h and 36min).

  • Average sunshine in September: 6h and 5min

The month with the most sunshine is July (Average sunshine: 7h and 36min).
The months with the least sunshine are February and November (Average sunshine: 4h and 6min).

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Average sunshine days in September
Chester, United Kingdom

Average sunshine days in September - Chester, United Kingdom
  • Average sunshine days in September: 10.4 days

The month with the most sunshine days is March (11.9 days).
The month with the least sunshine days is August (6.5 days).

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Average UV index in September
Chester, United Kingdom

Average UV index in September - Chester, United Kingdom
  • Average UV index in September: 3

The months with the highest UV index are May, June, July and August (UV index 4).
The months with the lowest UV index are January, February, November and December (UV index 2).

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Average cloud cover in September
Chester, United Kingdom

Average cloud cover in September - Chester, United Kingdom
  • Average cloud cover in September: 52

The month with the most cloud cover is November (Cloud cover 59).
The month with the least cloud cover is April (Cloud cover 49).

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Average visibility in September
Chester, United Kingdom

Average visibility in September - Chester, 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).

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Chester, United Kingdom

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