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
In September, Croydon experiences a barely noticeable shift in meteorological conditions, with average high-temperatures moving from 21.6°C (70.9°F) in August to an enjoyable 18.7°C (65.7°F). Croydon's average low-temperature for the month of September records at a cool 11.2°C (52.2°F).Humidity
In September, the average relative humidity in Croydon is 78%.Rainfall
In September, the rain falls for 11.1 days. Throughout September, 25mm (0.98") of precipitation is accumulated. In Croydon, during the entire year, the rain falls for 162.7 days and collects up to 388mm (15.28") of precipitation.Snowfall
In Croydon, snow does not fall in May through October.Daylight
In September, the average length of the day in Croydon is 12h and 38min.On the first day of the month, sunrise is at 6:14 am and sunset at 7:46 pm. On the last day of September, in Croydon, United Kingdom, sunrise is at 7:00 am and sunset at 6:40 pm BST.
Sunshine
In Croydon, the average sunshine in September is 7.5h.UV index
In Croydon, 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 the ordinary person.Note: In September, the maximum UV index of 4 suggests these recommendations:
Undertake precautions - Guarding against sun damage is counselled. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Croydon in September?
What is the average humidity in September in Croydon?
How much does it rain in Croydon in September?
When it does not snow in Croydon?
What is the average length of the day in September in Croydon?
When is the sunrise / sunset in September in Croydon?
How long on average sun shines in September in Croydon?
What is the UV index reading in September in Croydon?
Average temperature in September
Croydon, United Kingdom
- Average high temperature in September: 18.7°C
The warmest month (with the highest average high temperature) is July (21.9°C).
The month with the lowest average high temperature is January (6.7°C).
- Average low temperature in September: 11.2°C
The month with the highest average low temperature is August (13.8°C).
The coldest month (with the lowest average low temperature) is January (2.4°C).
Average pressure in September
Croydon, United Kingdom
- Average pressure in September: 1017mbar
The month with the highest atmospheric pressure is September (1017mbar).
The month with the lowest atmospheric pressure is November (1010.7mbar).
Average wind speed in September
Croydon, United Kingdom
- Average wind speed in September: 12.8km/h
The windiest month (with the highest average wind speed) is February (17.5km/h).
The calmest months (with the lowest average wind speed) are July, August and September (12.8km/h).
Average humidity in September
Croydon, United Kingdom
- Average humidity in September: 78%
The month with the highest relative humidity is December (89%).
The months with the lowest relative humidity are July and August (74%).
Average rainfall in September
Croydon, United Kingdom
- Average rainfall in September: 25mm
The wettest month (with the highest rainfall) is December (47mm).
The driest month (with the least rainfall) is April (21mm).
Average rainfall days in September
Croydon, United Kingdom
- Average rainfall days in September: 11.1 days
The month with the highest number of rainy days is July (16 days).
The month with the least rainy days is September (11.1 days).
Average snowfall in September
Croydon, United Kingdom
- Average snowfall in September: 0mm
The month with the highest snowfall is February (25mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in September
Croydon, 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
Croydon, 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: 7h and 54min).
- Average sunshine in September: 7h and 3min
The months with the most sunshine are July and August (Average sunshine: 8h and 24min).
The month with the least sunshine is February (Average sunshine: 3h and 36min).
Average sunshine days in September
Croydon, United Kingdom
- Average sunshine days in September: 16.4 days
The month with the most sunshine days is September (16.4 days).
The month with the least sunshine days is February (12.3 days).
Average UV index in September
Croydon, 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, November and December (UV index 2).
Average cloud cover in September
Croydon, United Kingdom
- Average cloud cover in September: 47
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 47).
Average visibility in September
Croydon, United Kingdom
- Average visibility in September: 9km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October and December (9km).
The month with the lowest visibility is November (8km).
Croydon, United Kingdom
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