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
As Falmouth transitions into September, the average high-temperature stands at a still enjoyable 16.5°C (61.7°F), offering little variation from the preceding month. September notes an average low temperature of 14.4°C (57.9°F), subtly down from the daytime highs.Humidity
The average relative humidity in September is 83%.Rainfall
In Falmouth, in September, during 9.9 rainfall days, 19mm (0.75") of precipitation is typically accumulated. Throughout the year, there are 159.4 rainfall days, and 367mm (14.45") of precipitation is accumulated.Snowfall
January, March through November are months without snowfall.Sea temperature
In September, the average sea temperature in Falmouth is 16.3°C (61.3°F).Note: Most people do not enjoy swimming in water of 16.3°C (61.3°F). Breathing control becomes harder as the temperature descends from 21°C (69.8°F) to 15°C (59°F).
Daylight
In Falmouth, the average length of the day in September is 12h and 37min.On the first day of the month, sunrise is at 6:35 am and sunset at 8:04 pm. On the last day of September, in Falmouth, sunrise is at 7:19 am and sunset at 7:00 pm BST.
Sunshine
The average sunshine in September is 7.6h.UV index
In Falmouth, United Kingdom, the average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for the ordinary person.Note: In September, the average maximum UV index of 4 translates into the following recommendations:
Exercise caution. The susceptibility of light skin individuals to burns is less than 30 minutes. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage.
Frequently asked questions
What is the usual temperature for Falmouth in September?
What is the average humidity in September in Falmouth?
How much does it rain in Falmouth in September?
When it does not snow in Falmouth?
What is the sea water temperature in September in Falmouth?
What is the average length of the day in September in Falmouth?
When are sunrise and sunset in September in Falmouth?
How long on average sun shines in September in Falmouth?
How high is the UV index in September in Falmouth?
Average temperature in September
Falmouth, United Kingdom
- Average high temperature in September: 16.5°C
The warmest month (with the highest average high temperature) is August (17.6°C).
The month with the lowest average high temperature is February (9.3°C).
- Average low temperature in September: 14.4°C
The month with the highest average low temperature is August (15.3°C).
The coldest month (with the lowest average low temperature) is February (6.9°C).
Average pressure in September
Falmouth, United Kingdom
- Average pressure in September: 1017.5mbar
The month with the highest atmospheric pressure is September (1017.5mbar).
The month with the lowest atmospheric pressure is November (1010.4mbar).
Average wind speed in September
Falmouth, United Kingdom
- Average wind speed in September: 23.3km/h
The windiest month (with the highest average wind speed) is December (31.6km/h).
The calmest month (with the lowest average wind speed) is July (19.9km/h).
Average humidity in September
Falmouth, United Kingdom
- Average humidity in September: 83%
The months with the highest relative humidity are June and July (84%).
The month with the lowest relative humidity is February (79%).
Average rainfall in September
Falmouth, United Kingdom
- Average rainfall in September: 19mm
The wettest month (with the highest rainfall) is November (55mm).
The driest month (with the least rainfall) is July (18mm).
Average rainfall days in September
Falmouth, United Kingdom
- Average rainfall days in September: 9.9 days
The month with the highest number of rainy days is November (17.1 days).
The month with the least rainy days is September (9.9 days).
Average snowfall in September
Falmouth, United Kingdom
- Average snowfall in September: 0mm
The months with the highest snowfall are February and December (1mm).
The months with the least snowfall are January, March, April, May, June, July, August, September, October and November (0mm).
Average snowfall days in September
Falmouth, United Kingdom
- Average snowfall days in September: 0 days
The months with the highest number of snowfall days are February and December (0.5 days).
The months with the least snowfall days are May, June, July, August, September, October and November (0 days).
Average sea temperature in September
Falmouth, United Kingdom
- Average sea temperature in September: 16.3°C
The best month for swimming (with the highest average sea temperature) is August (17.1°C).
The coldest month (with the lowest average sea temperature) is March (9.7°C).
Average daylight in September /
Average sunshine in September
Falmouth, United Kingdom
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 16h and 18min).
The month with the shortest days is December (Average daylight: 8h and 6min).
- Average sunshine in September: 7h and 4min
The months with the most sunshine are April and July (Average sunshine: 8h and 30min).
The months with the least sunshine are January and November (Average sunshine: 4h and 0min).
Average sunshine days in September
Falmouth, United Kingdom
- Average sunshine days in September: 17.3 days
The month with the most sunshine days is May (17.5 days).
The month with the least sunshine days is November (10.2 days).
Average UV index in September
Falmouth, United Kingdom
- Average UV index in September: 4
The month with the highest UV index is August (UV index 5).
The month with the lowest UV index is January (UV index 2).
Average cloud cover in September
Falmouth, United Kingdom
- Average cloud cover in September: 47
The month with the most cloud cover is December (Cloud cover 61).
The month with the least cloud cover is April (Cloud cover 42).
Average visibility in September
Falmouth, 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).
Falmouth, United Kingdom
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