September weather forecastEast Grinstead, United Kingdom
September
Weather in September
The first month of the autumn, September, is also an enjoyable month in East Grinstead, United Kingdom, with temperature in the range of an average low of 11.2°C (52.2°F) and an average high of 18.5°C (65.3°F).Temperature
The transition into September is marked with an average high-temperature of a refreshing 18.5°C (65.3°F), showing an insignificant shift from August's 21.3°C (70.3°F). East Grinstead's temperature drops to an average low of 11.2°C (52.2°F) during the nights of September.Humidity
The average relative humidity in September in East Grinstead is 79%.Rainfall
In East Grinstead, in September, it is raining for 10.5 days, with typically 25mm (0.98") of accumulated precipitation. In East Grinstead, during the entire year, the rain falls for 163.1 days and collects up to 393mm (15.47") of precipitation.Snowfall
In East Grinstead, snow does not fall in May through October.Daylight
The average length of the day in September is 12h and 38min.On the first day of the month, sunrise is at 6:14 am and sunset at 7:45 pm. On the last day of September, sunrise is at 6:59 am and sunset at 6:39 pm BST.
Sunshine
In September, the average sunshine is 7.5h.UV index
The average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for the ordinary person.Note: In September, a daily maximum UV index of 4 leads to the following instructions:
Put precautions into practice - Protective measures against sun-induced damage are advised. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
East Grinstead, United Kingdom
- Average high temperature in September: 18.5°C
The warmest months (with the highest average high temperature) are July and August (21.3°C).
The month with the lowest average high temperature is January (6.9°C).
- Average low temperature in September: 11.2°C
The month with the highest average low temperature is August (13.3°C).
The coldest month (with the lowest average low temperature) is January (2.3°C).
Average pressure in September
East Grinstead, United Kingdom
- Average pressure in September: 1017.1mbar
The month with the highest atmospheric pressure is September (1017.1mbar).
The month with the lowest atmospheric pressure is November (1010.8mbar).
Average wind speed in September
East Grinstead, United Kingdom
- Average wind speed in September: 13.4km/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 July, August and September (13.4km/h).
Average humidity in September
East Grinstead, United Kingdom
- Average humidity in September: 79%
The month with the highest relative humidity is December (89%).
The months with the lowest relative humidity are July and August (77%).
Average rainfall in September
East Grinstead, United Kingdom
- Average rainfall in September: 25mm
The wettest month (with the highest rainfall) is December (45mm).
The driest month (with the least rainfall) is April (20mm).
Average rainfall days in September
East Grinstead, United Kingdom
- Average rainfall days in September: 10.5 days
The month with the highest number of rainy days is July (15.8 days).
The month with the least rainy days is September (10.5 days).
Average snowfall in September
East Grinstead, United Kingdom
- Average snowfall in September: 0mm
The month with the highest snowfall is February (20mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in September
East Grinstead, United Kingdom
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (3.9 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
East Grinstead, United Kingdom
- Average daylight in September: 12h and 36min
The month with the longest days is June (Average daylight: 16h and 30min).
The month with the shortest days is December (Average daylight: 8h and 0min).
- Average sunshine in September: 7h and 30min
The month with the most sunshine is July (Average sunshine: 8h and 30min).
The month with the least sunshine is February (Average sunshine: 3h and 36min).
Average sunshine days in September
East Grinstead, United Kingdom
- Average sunshine days in September: 16.1 days
The month with the most sunshine days is September (16.1 days).
The month with the least sunshine days is February (11.6 days).
Average UV index in September
East Grinstead, 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
East Grinstead, United Kingdom
- Average cloud cover in September: 47
The month with the most cloud cover is February (Cloud cover 62).
The months with the least cloud cover are July, August and September (Cloud cover 47).
Average visibility in September
East Grinstead, 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).
