September weather forecastSanderstead, United Kingdom
September
Weather in September
September, the first month of the autumn in Sanderstead, is still a comfortable month, with an average temperature varying between 18.7°C (65.7°F) and 11.2°C (52.2°F).Temperature
Sanderstead's shift into September sets the average high-temperature at a refreshing 18.7°C (65.7°F), a figure that deviates only slightly from August's 21.6°C (70.9°F). An average temperature of 11.2°C (52.2°F) is recorded in Sanderstead during the nights in September.Humidity
In September, the average relative humidity is 78%.Rainfall
In Sanderstead, during September, the rain falls for 11.1 days and regularly aggregates up to 25mm (0.98") of precipitation. In Sanderstead, during the entire year, the rain falls for 162.7 days and collects up to 388mm (15.28") of precipitation.Snowfall
In Sanderstead, snow does not fall in May through October.Daylight
The average length of the day in September in Sanderstead 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, sunrise is at 7:00 am and sunset at 6:40 pm BST.
Sunshine
The average sunshine in September is 7.5h.UV index
In September, the average daily maximum UV index in Sanderstead is 4. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for the average person.Note: A maximum UV index of 4 in September translates into the following recommendations:
Act with care - The need to guard against sun damage is communicated. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Sanderstead, 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
Sanderstead, 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
Sanderstead, 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
Sanderstead, 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
Sanderstead, 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
Sanderstead, 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
Sanderstead, 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
Sanderstead, 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
Sanderstead, 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 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
Sanderstead, 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
Sanderstead, 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
Sanderstead, 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
Sanderstead, 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).
