September weather forecastForest Row, United Kingdom
September
Weather in September
September, the first month of the autumn in Forest Row, is still a refreshing month, with an average temperature varying between 18.5°C (65.3°F) and 11.2°C (52.2°F).Temperature
Forest Row's entry into September measures an average high-temperature of a refreshing 18.5°C (65.3°F), closely parallel to the preceding month. Throughout September, Forest Row experiences a low-temperature average of 11.2°C (52.2°F).Humidity
In September, the average relative humidity is 79%.Rainfall
In Forest Row, in September, during 10.5 rainfall days, 25mm (0.98") of precipitation is typically accumulated. Throughout the year, in Forest Row, there are 163.1 rainfall days, and 393mm (15.47") of precipitation is accumulated.Snowfall
May through October are months without snowfall in Forest Row.Daylight
In September, the average length of the day 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, in Forest Row, sunrise is at 6:59 am and sunset at 6:39 pm BST.
Sunshine
The average sunshine in September in Forest Row is 7.5h.UV index
The average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for ordinary individuals.Note: In September, a daily maximum UV index of 4 leads to the following instructions:
Take precautions - Protection against skin and eye damage is obliged. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Forest Row, 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
Forest Row, 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
Forest Row, 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
Forest Row, 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
Forest Row, 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
Forest Row, 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
Forest Row, 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
Forest Row, 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
Forest Row, 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
Forest Row, 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
Forest Row, 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
Forest Row, 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
Forest Row, 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).
