September weather forecastExeter, United Kingdom
September
Weather in September
Symphony of autumn begins in September in Exeter with slightly cooler temperatures. Despite the fall in temperature, there continues to be no snowfall. Earlier sunsets and golden hues dominate the cityscape, marking the definitive end to summer. As leaf-peeping season begins, the city becomes a photographer's dream. Even though rainfall sees a slight decrease, it still gets recorded as more than the spring months.Temperature
The onset of September manifests an average high-temperature of a still enjoyable 17°C (62.6°F), demonstrating a minor variation from the preceding month. September brings with it a nighttime average temperature of 11.3°C (52.3°F) in Exeter.Humidity
In September, the average relative humidity in Exeter is 84%.Rainfall
In September, the rain falls for 11.5 days. Throughout September, 26mm (1.02") of precipitation is accumulated. Throughout the year, there are 171.2 rainfall days, and 453mm (17.83") of precipitation is accumulated.Snowfall
April through October are months without snowfall.Daylight
In Exeter, United Kingdom, the average length of the day in September is 12h and 37min.On the first day of the month, sunrise is at 6:28 am and sunset at 7:58 pm. On the last day of September, in Exeter, United Kingdom, sunrise is at 7:13 am and sunset at 6:54 pm BST.
Sunshine
In Exeter, the average sunshine in September is 7.5h.UV index
The months with the highest UV index are May through September, with an average maximum UV index of 4. A UV Index of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for ordinary individuals.Note: A maximum high daily UV index of 4 during September translates into the following directions:
Adopt protective measures - Requirement to safeguard skin and eyes from harm exists. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Exeter, United Kingdom
- Average high temperature in September: 17°C
The warmest month (with the highest average high temperature) is July (19.1°C).
The month with the lowest average high temperature is February (7.9°C).
- Average low temperature in September: 11.3°C
The month with the highest average low temperature is August (12.9°C).
The coldest month (with the lowest average low temperature) is February (3.9°C).
Average pressure in September
Exeter, United Kingdom
- Average pressure in September: 1017.2mbar
The month with the highest atmospheric pressure is September (1017.2mbar).
The month with the lowest atmospheric pressure is November (1010.3mbar).
Average wind speed in September
Exeter, United Kingdom
- Average wind speed in September: 16.7km/h
The windiest month (with the highest average wind speed) is February (22.5km/h).
The calmest month (with the lowest average wind speed) is July (14.8km/h).
Average humidity in September
Exeter, United Kingdom
- Average humidity in September: 84%
The months with the highest relative humidity are January, October, November and December (86%).
The months with the lowest relative humidity are April, May and July (83%).
Average rainfall in September
Exeter, United Kingdom
- Average rainfall in September: 26mm
The wettest month (with the highest rainfall) is November (56mm).
The driest month (with the least rainfall) is May (24mm).
Average rainfall days in September
Exeter, United Kingdom
- Average rainfall days in September: 11.5 days
The month with the highest number of rainy days is November (17.8 days).
The month with the least rainy days is September (11.5 days).
Average snowfall in September
Exeter, United Kingdom
- Average snowfall in September: 0mm
The month with the highest snowfall is January (8mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in September
Exeter, United Kingdom
- Average snowfall days in September: 0 days
The months with the highest number of snowfall days are January and February (1.3 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
Exeter, United Kingdom
- Average daylight in September: 12h and 36min
The month with the longest days is June (Average daylight: 16h and 24min).
The month with the shortest days is December (Average daylight: 8h and 6min).
- Average sunshine in September: 7h and 30min
The month with the most sunshine is July (Average sunshine: 8h and 30min).
The months with the least sunshine are January, February and November (Average sunshine: 4h and 6min).
Average sunshine days in September
Exeter, United Kingdom
- Average sunshine days in September: 15.2 days
The month with the most sunshine days is September (15.2 days).
The month with the least sunshine days is November (8.6 days).
Average UV index in September
Exeter, United Kingdom
- Average UV index in September: 4
The months with the highest UV index are May, June, July, August and September (UV index 4).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Exeter, United Kingdom
- Average cloud cover in September: 48
The month with the most cloud cover is November (Cloud cover 59).
The month with the least cloud cover is April (Cloud cover 45).
Average visibility in September
Exeter, United Kingdom
- Average visibility in September: 9km
The month with the highest visibility is February (10km).
The months with the lowest visibility are January, March, April, May, June, July, August, September, October, November and December (9km).
