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
The average high-temperature for September is a still refreshing 17.6°C (63.7°F), closely aligning with the temperature of the preceding month. Throughout September, Cheltenham registers a consistent average low-temperature of 9.7°C (49.5°F).Humidity
In Cheltenham, United Kingdom, the average relative humidity in September is 84%.Rainfall
The months with the least rainfall in Cheltenham are January, March and September Rain falls for 9.6 days and accumulates 17mm (0.67") of rain.Snowfall
May through October are months without snowfall in Cheltenham.Daylight
The average length of the day in September in Cheltenham is 12h and 39min.On the first day of the month, sunrise is at 6:21 am and sunset at 7:55 pm. On the last day of September, in Cheltenham, sunrise is at 7:08 am and sunset at 6:47 pm BST.
Sunshine
In September, the average sunshine is 6.5h.UV index
May through September, with an average maximum UV index of 4, are months with the highest UV index. A UV Index of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for average individuals.Note: An average UV index of 4 in September transforms into this advice:
Undertake protective steps - Recommendations to avoid sunburn are issued. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly.
Frequently asked questions
What is the usual temperature for Cheltenham in September?
What is the average humidity in September in Cheltenham?
What is the driest month in Cheltenham?
How much does it rain in Cheltenham in September?
When it does not snow in Cheltenham?
How many hours of daylight does Cheltenham have in September?
When are sunrise and sunset in September in Cheltenham?
How many hours of sunshine does Cheltenham have in September?
When is the highest UV index in Cheltenham?
How high is the UV index in September in Cheltenham?
Average temperature in September
Cheltenham, United Kingdom
- Average high temperature in September: 17.6°C
The warmest month (with the highest average high temperature) is July (20.3°C).
The month with the lowest average high temperature is January (6.3°C).
- Average low temperature in September: 9.7°C
The month with the highest average low temperature is August (12°C).
The coldest month (with the lowest average low temperature) is January (1.3°C).
Average pressure in September
Cheltenham, United Kingdom
- Average pressure in September: 1016.5mbar
The month with the highest atmospheric pressure is May (1016.6mbar).
The month with the lowest atmospheric pressure is November (1010mbar).
Average wind speed in September
Cheltenham, United Kingdom
- Average wind speed in September: 13km/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 June and July (12.7km/h).
Average humidity in September
Cheltenham, United Kingdom
- Average humidity in September: 84%
The month with the highest relative humidity is December (91%).
The months with the lowest relative humidity are July and August (82%).
Average rainfall in September
Cheltenham, United Kingdom
- Average rainfall in September: 17mm
The wettest month (with the highest rainfall) is June (39mm).
The driest months (with the least rainfall) are January, March and September (17mm).
Average rainfall days in September
Cheltenham, United Kingdom
- Average rainfall days in September: 9.6 days
The month with the highest number of rainy days is July (16.8 days).
The month with the least rainy days is December (9.3 days).
Average snowfall in September
Cheltenham, United Kingdom
- Average snowfall in September: 0mm
The months with the highest snowfall are January, February and December (9mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in September
Cheltenham, United Kingdom
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (3.1 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
Cheltenham, 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: 6h and 3min
The month with the most sunshine is July (Average sunshine: 7h and 24min).
The months with the least sunshine are February and November (Average sunshine: 3h and 42min).
Average sunshine days in September
Cheltenham, United Kingdom
- Average sunshine days in September: 17.7 days
The month with the most sunshine days is December (19.3 days).
The month with the least sunshine days is June (10.2 days).
Average UV index in September
Cheltenham, United Kingdom
- Average UV index in September: 4
The months with the highest UV index are May, June, July, August and September (UV index 4).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Cheltenham, United Kingdom
- Average cloud cover in September: 55
The month with the most cloud cover is November (Cloud cover 64).
The month with the least cloud cover is April (Cloud cover 54).
Average visibility in September
Cheltenham, United Kingdom
- Average visibility in September: 8km
The months with the highest visibility are January, February, March and December (9km).
The months with the lowest visibility are April, May, June, July, August, September, October and November (8km).
Cheltenham, United Kingdom
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