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
As St. Mary Cray enters September, the average high-temperature subtly lowers from the a pleasant 21.7°C (71.1°F) of August to an enjoyable 18.7°C (65.7°F). The average low-temperature, in September, in St. Mary Cray, is a cool 11.5°C (52.7°F).Humidity
In St. Mary Cray, the average relative humidity in September is 77%.Rainfall
In St. Mary Cray, United Kingdom, in September, it is raining for 9.7 days, with typically 21mm (0.83") of accumulated precipitation. Throughout the year, in St. Mary Cray, there are 151.6 rainfall days, and 342mm (13.46") of precipitation is accumulated.Snowfall
May through October are months without snowfall in St. Mary Cray.Daylight
In St. Mary Cray, the average length of the day in September is 12h and 38min.On the first day of the month, sunrise is at 6:13 am and sunset at 7:45 pm. On the last day of September, in St. Mary Cray, sunrise is at 6:59 am and sunset at 6:39 pm BST.
Sunshine
In September, the average sunshine in St. Mary Cray is 7.4h.UV index
In St. Mary Cray, United Kingdom, the average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for the average person.Note: The maximum daily UV index, 4 in September, converts into the following recommendations:
Prioritize safety - Recommendations to avert sunburn are shared. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. Tightly woven clothing, when worn loosely, shields effectively against the Sun.
Frequently asked questions
What are the temperatures in St. Mary Cray in September?
What is the average humidity in September in St. Mary Cray?
How many days does it rain in September in St. Mary Cray?
When it does not snow in St. Mary Cray?
What is the average length of the day in September in St. Mary Cray?
What time are sunrise and sunset in September in St. Mary Cray?
How many hours of sunshine does St. Mary Cray have in September?
How high is the UV index in September in St. Mary Cray?
Average temperature in September
St. Mary Cray, 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: 11.5°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
St. Mary Cray, 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
St. Mary Cray, United Kingdom
- Average wind speed in September: 12.9km/h
The windiest month (with the highest average wind speed) is February (17.7km/h).
The calmest month (with the lowest average wind speed) is September (12.9km/h).
Average humidity in September
St. Mary Cray, United Kingdom
- Average humidity in September: 77%
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
St. Mary Cray, United Kingdom
- Average rainfall in September: 21mm
The wettest month (with the highest rainfall) is December (38mm).
The driest month (with the least rainfall) is April (18mm).
Average rainfall days in September
St. Mary Cray, United Kingdom
- Average rainfall days in September: 9.7 days
The month with the highest number of rainy days is July (15.5 days).
The month with the least rainy days is September (9.7 days).
Average snowfall in September
St. Mary Cray, United Kingdom
- Average snowfall in September: 0mm
The month with the highest snowfall is February (23mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in September
St. Mary Cray, United Kingdom
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (4.2 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
St. Mary Cray, 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 2min
The months with the most sunshine are July and August (Average sunshine: 8h and 18min).
The month with the least sunshine is February (Average sunshine: 3h and 36min).
Average sunshine days in September
St. Mary Cray, United Kingdom
- Average sunshine days in September: 17.5 days
The month with the most sunshine days is September (17.5 days).
The month with the least sunshine days is February (12.8 days).
Average UV index in September
St. Mary Cray, 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
St. Mary Cray, 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
St. Mary Cray, 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).
St. Mary Cray, United Kingdom
Weather forecast for your location
2. Allow the app to use your location
