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 sea temperature 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
The shift into September finds Southwold, United Kingdom, at an average high-temperature of a still comfortable 17.5°C (63.5°F), closely comparable to August's conditions. Southwold, during September nights, witnesses an average temperature marginally cooler than its daytime highs, at a mild 13.6°C (56.5°F).Humidity
August and September, with an average relative humidity of 77%, are the least humid months in Southwold.Rainfall
In Southwold, in September, it is raining for 13 days, with typically 26mm (1.02") of accumulated precipitation. In Southwold, during the entire year, the rain falls for 179.9 days and collects up to 392mm (15.43") of precipitation.Snowfall
May through October are months without snowfall in Southwold.Sea temperature
With an average sea temperature of 17.3°C (63.1°F), September is the month with the warmest seawater in Southwold.Note: The majority of people do not enjoy swimming in 17.3°C (63.1°F). The difficulty in controlling breathing escalates as the temperature descends from 21°C (69.8°F) to 15°C (59°F).
Daylight
In September, the average length of the day in Southwold is 12h and 40min.On the first day of the month, sunrise is at 6:05 am and sunset at 7:40 pm. On the last day of September, sunrise is at 6:53 am and sunset at 6:32 pm BST.
Sunshine
In Southwold, the average sunshine in September is 8.1h.UV index
In Southwold, the average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for the ordinary person.Note: In September, the maximum UV index of 4 translates into these guidelines:
Take precautions - Protection against sun damage is advised. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear.
Frequently asked questions
What is the temperature in September in Southwold?
What are the least humid months in Southwold?
What is the average humidity in September in Southwold?
How much does it rain in Southwold in September?
When it does not snow in Southwold?
What month is the sea warmest in Southwold?
What is the sea temperature in September in Southwold?
What is the average length of the day in September in Southwold?
When are sunrise and sunset in September in Southwold?
How many hours of sunshine does Southwold have in September?
What is the UV index intensity in September in Southwold?
Average temperature in September
Southwold, United Kingdom
- Average high temperature in September: 17.5°C
The warmest month (with the highest average high temperature) is August (19.8°C).
The month with the lowest average high temperature is January (6.8°C).
- Average low temperature in September: 13.6°C
The month with the highest average low temperature is August (15.4°C).
The coldest month (with the lowest average low temperature) is January (4.1°C).
Average pressure in September
Southwold, United Kingdom
- Average pressure in September: 1016.5mbar
The month with the highest atmospheric pressure is May (1016.6mbar).
The month with the lowest atmospheric pressure is November (1010.3mbar).
Average wind speed in September
Southwold, United Kingdom
- Average wind speed in September: 19.5km/h
The windiest month (with the highest average wind speed) is December (26.7km/h).
The calmest month (with the lowest average wind speed) is July (17.1km/h).
Average humidity in September
Southwold, United Kingdom
- Average humidity in September: 77%
The month with the highest relative humidity is December (84%).
The months with the lowest relative humidity are August and September (77%).
Average rainfall in September
Southwold, United Kingdom
- Average rainfall in September: 26mm
The wettest month (with the highest rainfall) is July (45mm).
The driest month (with the least rainfall) is April (16mm).
Average rainfall days in September
Southwold, United Kingdom
- Average rainfall days in September: 13 days
The month with the highest number of rainy days is July (17.8 days).
The month with the least rainy days is April (12.4 days).
Average snowfall in September
Southwold, United Kingdom
- Average snowfall in September: 0mm
The month with the highest snowfall is February (21mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in September
Southwold, 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 sea temperature in September
Southwold, United Kingdom
- Average sea temperature in September: 17.3°C
The best month for swimming (with the highest average sea temperature) is September (17.3°C).
The coldest month (with the lowest average sea temperature) is March (6.8°C).
Average daylight in September /
Average sunshine in September
Southwold, United Kingdom
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 16h and 42min).
The month with the shortest days is December (Average daylight: 7h and 48min).
- Average sunshine in September: 8h and 1min
The month with the most sunshine is August (Average sunshine: 9h and 24min).
The months with the least sunshine are January and February (Average sunshine: 4h and 0min).
Average sunshine days in September
Southwold, United Kingdom
- Average sunshine days in September: 13.3 days
The month with the most sunshine days is April (14.9 days).
The month with the least sunshine days is July (10.3 days).
Average UV index in September
Southwold, 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
Southwold, United Kingdom
- Average cloud cover in September: 40
The months with the most cloud cover are January and February (Cloud cover 59).
The month with the least cloud cover is August (Cloud cover 39).
Average visibility in September
Southwold, United Kingdom
- Average visibility in September: 10km
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (10km).
The month with the lowest visibility is January (9km).
Southwold, United Kingdom
Weather forecast for your location
2. Allow the app to use your location
