September weather forecastSwafield, United Kingdom
September
Weather in September
The first month of the autumn, September, is still a refreshing month in Swafield, United Kingdom, with temperature in the range of an average low of 13.1°C (55.6°F) and an average high of 17.4°C (63.3°F).Temperature
September notes an average high-temperature of a still enjoyable 17.4°C (63.3°F), subtly differing from August's 19.6°C (67.3°F). A modest nighttime temperature average of 13.1°C (55.6°F) characterizes September in Swafield.Humidity
In Swafield, United Kingdom, the average relative humidity in September is 79%.Rainfall
In Swafield, during September, the rain falls for 12.2 days and regularly aggregates up to 29mm (1.14") of precipitation. Throughout the year, there are 170.2 rainfall days, and 400mm (15.75") of precipitation is accumulated.Snowfall
In Swafield, United Kingdom, snow does not fall in April through October.Daylight
In September, the average length of the day is 12h and 40min.On the first day of the month, sunrise is at 6:05 am and sunset at 7:42 pm. On the last day of September, in Swafield, sunrise is at 6:55 am and sunset at 6:33 pm BST.
Sunshine
The average sunshine in September is 8h.UV index
The average daily maximum UV index in September in Swafield, United Kingdom, is 4. A UV Index value of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for average individuals.Note: In September, the maximum UV index of 4 transforms into these recommendations:
Exercise prevention - Precautions against solar damage are endorsed. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Swafield, United Kingdom
- Average high temperature in September: 17.4°C
The warmest month (with the highest average high temperature) is August (19.6°C).
The month with the lowest average high temperature is January (6.6°C).
- Average low temperature in September: 13.1°C
The month with the highest average low temperature is August (15°C).
The coldest month (with the lowest average low temperature) is February (3.5°C).
Average pressure in September
Swafield, United Kingdom
- Average pressure in September: 1016.2mbar
The month with the highest atmospheric pressure is May (1016.5mbar).
The month with the lowest atmospheric pressure is November (1009.9mbar).
Average wind speed in September
Swafield, United Kingdom
- Average wind speed in September: 18.4km/h
The windiest month (with the highest average wind speed) is December (25.1km/h).
The calmest month (with the lowest average wind speed) is July (15.7km/h).
Average humidity in September
Swafield, United Kingdom
- Average humidity in September: 79%
The month with the highest relative humidity is December (85%).
The month with the lowest relative humidity is August (77%).
Average rainfall in September
Swafield, United Kingdom
- Average rainfall in September: 29mm
The wettest month (with the highest rainfall) is October (45mm).
The driest month (with the least rainfall) is April (17mm).
Average rainfall days in September
Swafield, United Kingdom
- Average rainfall days in September: 12.2 days
The month with the highest number of rainy days is July (17.8 days).
The month with the least rainy days is February (11.2 days).
Average snowfall in September
Swafield, United Kingdom
- Average snowfall in September: 0mm
The months with the highest snowfall are January and February (12mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in September
Swafield, United Kingdom
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (2.6 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
Swafield, United Kingdom
- Average daylight in September: 12h and 42min
The month with the longest days is June (Average daylight: 16h and 48min).
The month with the shortest days is December (Average daylight: 7h and 42min).
- Average sunshine in September: 8h and 0min
The month with the most sunshine is August (Average sunshine: 9h and 12min).
The month with the least sunshine is February (Average sunshine: 3h and 54min).
Average sunshine days in September
Swafield, United Kingdom
- Average sunshine days in September: 14.9 days
The month with the most sunshine days is March (16 days).
The month with the least sunshine days is July (10.5 days).
Average UV index in September
Swafield, 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
Swafield, United Kingdom
- Average cloud cover in September: 42
The month with the most cloud cover is January (Cloud cover 60).
The month with the least cloud cover is August (Cloud cover 41).
Average visibility in September
Swafield, United Kingdom
- Average visibility in September: 10km
The months with the highest visibility are February, March, April, May, June, July, August, September, October and November (10km).
The months with the lowest visibility are January and December (9km).
