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
Swanage's shift from August to September is accompanied by an average high-temperature of a still comfortable 17.5°C (63.5°F), a slight deviation from 18.9°C (66°F). In Swanage, September is characterized by an average low-temperature of 12.7°C (54.9°F), indicating a minor drop from daytime highs.Humidity
April, May, July and September, with an average relative humidity of 81%, are the least humid months.Rainfall
In Swanage, during September, the rain falls for 11.4 days and regularly aggregates up to 21mm (0.83") of precipitation. In Swanage, during the entire year, the rain falls for 162.1 days and collects up to 328mm (12.91") of precipitation.Snowfall
In Swanage, snow does not fall in March through October.Sea temperature
The month with the warmest seawater in Swanage, United Kingdom, is September, with an average sea temperature of 17.3°C (63.1°F).Note: The enjoyment of swimming decreases for most when the surface water temperature is 17.3°C (63.1°F). Breathing control becomes increasingly challenging as temperatures descend below 21°C (69.8°F).
Daylight
The average length of the day in September is 12h and 37min.On the first day of September in Swanage, sunrise is at 6:22 am and sunset at 7:52 pm. On the last day of the month, sunrise is at 7:07 am and sunset at 6:47 pm BST.
Sunshine
In Swanage, the average sunshine in September is 8.2h.UV index
The average daily maximum UV index in September in Swanage is 4. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for ordinary individuals.Note: The UV index of 4 during September translates into the following guidance:
Exercise caution. The susceptibility of light skin individuals to burns is less than 30 minutes. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. Opt for tightly woven and loose clothing to enhance protection from the Sun.
Frequently asked questions
What is the average September temperature in Swanage?
What is the least humid month in Swanage?
What is the average humidity in September in Swanage?
How many days does it rain in September in Swanage?
When it does not snow in Swanage?
What is the month with the warmest sea water in Swanage?
What is the sea water temperature in September in Swanage?
What is the average length of the day in September in Swanage?
What time are sunrise and sunset in September in Swanage?
How long on average sun shines in September in Swanage?
How high is the UV index in September in Swanage?
Average temperature in September
Swanage, United Kingdom
- Average high temperature in September: 17.5°C
The warmest month (with the highest average high temperature) is July (19°C).
The month with the lowest average high temperature is February (7.9°C).
- Average low temperature in September: 12.7°C
The month with the highest average low temperature is August (14.4°C).
The coldest month (with the lowest average low temperature) is February (4.6°C).
Average pressure in September
Swanage, 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 (1010.6mbar).
Average wind speed in September
Swanage, United Kingdom
- Average wind speed in September: 18.9km/h
The windiest month (with the highest average wind speed) is December (24.3km/h).
The calmest month (with the lowest average wind speed) is July (16.7km/h).
Average humidity in September
Swanage, United Kingdom
- Average humidity in September: 81%
The months with the highest relative humidity are January and December (85%).
The months with the lowest relative humidity are April, May, July and September (81%).
Average rainfall in September
Swanage, United Kingdom
- Average rainfall in September: 21mm
The wettest month (with the highest rainfall) is November (46mm).
The driest month (with the least rainfall) is May (17mm).
Average rainfall days in September
Swanage, United Kingdom
- Average rainfall days in September: 11.4 days
The month with the highest number of rainy days is November (17.6 days).
The month with the least rainy days is May (11.3 days).
Average snowfall in September
Swanage, United Kingdom
- Average snowfall in September: 0mm
The month with the highest snowfall is December (5mm).
The months with the least snowfall are March, April, May, June, July, August, September and October (0mm).
Average snowfall days in September
Swanage, United Kingdom
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (1.7 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average sea temperature in September
Swanage, 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 (8.7°C).
Average daylight in September /
Average sunshine in September
Swanage, United Kingdom
- Average daylight in September: 12h and 4min
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: 8h and 1min
The month with the most sunshine is July (Average sunshine: 9h and 12min).
The month with the least sunshine is February (Average sunshine: 4h and 0min).
Average sunshine days in September
Swanage, United Kingdom
- Average sunshine days in September: 15.5 days
The month with the most sunshine days is May (15.9 days).
The month with the least sunshine days is November (9.1 days).
Average UV index in September
Swanage, 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 and February (UV index 2).
Average cloud cover in September
Swanage, United Kingdom
- Average cloud cover in September: 42
The month with the most cloud cover is November (Cloud cover 58).
The months with the least cloud cover are July and September (Cloud cover 42).
Average visibility in September
Swanage, United Kingdom
- Average visibility in September: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
Swanage, United Kingdom
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