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
Redhill transitions into September recording an average high-temperature of a refreshing 18.5°C (65.3°F), closely aligning with the preceding month's temperature. Throughout September, the temperature tends to fall to a consistent average low of 11.2°C (52.2°F).Humidity
In September, the average relative humidity in Redhill is 79%.Rainfall
In September, in Redhill, the rain falls for 8.4 days. Throughout September, 13mm (0.51") of precipitation is accumulated. Throughout the year, in Redhill, there are 138.6 rainfall days, and 216mm (8.5") of precipitation is accumulated.Snowfall
April through October are months without snowfall in Redhill.Daylight
The average length of the day in September in Redhill, United Kingdom, is 12h and 38min.On the first day of September, sunrise is at 6:14 am and sunset at 7:46 pm. On the last day of the month, sunrise is at 7:00 am and sunset at 6:40 pm BST.
Sunshine
The average sunshine in September in Redhill is 7.6h.UV index
In September, the average daily maximum UV index in Redhill is 4. A UV Index value of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for ordinary individuals.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. Around midday, solar radiation is most harmful; hence, exposure should be limited. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes.
Frequently asked questions
What is the usual temperature for Redhill in September?
What is the average humidity in September in Redhill?
How much does it rain in Redhill in September?
When it does not snow in Redhill?
How many hours of daylight does Redhill have in September?
When is the sunrise / sunset in September in Redhill?
How many hours of sunshine does Redhill have in September?
What is the UV index reading in September in Redhill?
Average temperature in September
Redhill, United Kingdom
- Average high temperature in September: 18.5°C
The warmest month (with the highest average high temperature) is July (21.4°C).
The month with the lowest average high temperature is January (7.1°C).
- Average low temperature in September: 11.2°C
The month with the highest average low temperature is August (13.4°C).
The coldest month (with the lowest average low temperature) is January (2.3°C).
Average pressure in September
Redhill, 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
Redhill, United Kingdom
- Average wind speed in September: 13.3km/h
The windiest month (with the highest average wind speed) is February (18km/h).
The calmest months (with the lowest average wind speed) are July and August (13.2km/h).
Average humidity in September
Redhill, 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
Redhill, United Kingdom
- Average rainfall in September: 13mm
The wettest months (with the highest rainfall) are November and December (26mm).
The driest month (with the least rainfall) is April (12mm).
Average rainfall days in September
Redhill, United Kingdom
- Average rainfall days in September: 8.4 days
The month with the highest number of rainy days is November (14.7 days).
The month with the least rainy days is September (8.4 days).
Average snowfall in September
Redhill, United Kingdom
- Average snowfall in September: 0mm
The month with the highest snowfall is February (8mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in September
Redhill, United Kingdom
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (2.8 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
Redhill, 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: 8h and 0min).
- Average sunshine in September: 7h and 4min
The month with the most sunshine is July (Average sunshine: 8h and 36min).
The month with the least sunshine is February (Average sunshine: 3h and 42min).
Average sunshine days in September
Redhill, United Kingdom
- Average sunshine days in September: 17.4 days
The month with the most sunshine days is September (17.4 days).
The month with the least sunshine days is November (11 days).
Average UV index in September
Redhill, 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
Redhill, United Kingdom
- Average cloud cover in September: 46
The months with the most cloud cover are February and November (Cloud cover 61).
The months with the least cloud cover are August and September (Cloud cover 46).
Average visibility in September
Redhill, 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).
Redhill, United Kingdom
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