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 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
With September's arrival, Swettenham notes an average high-temperature of a still enjoyable 16.1°C (61°F), closely following the trend of the preceding month. Swettenham's nights in September experience an average temperature drop to a chilly 8.9°C (48°F).Humidity
The average relative humidity in September is 86%.Rainfall
In September, the rain falls for 14.8 days. Throughout September, 44mm (1.73") of precipitation is accumulated. In Swettenham, during the entire year, the rain falls for 196.9 days and collects up to 619mm (24.37") of precipitation.Snowfall
In Swettenham, snow does not fall in June through October.Daylight
In Swettenham, the average length of the day in September is 12h and 40min.On the first day of the month, sunrise is at 6:19 am and sunset at 7:58 pm. On the last day of September, in Swettenham, sunrise is at 7:09 am and sunset at 6:48 pm BST.
Sunshine
In Swettenham, the average sunshine in September is 6.1h.UV index
In Swettenham, the average daily maximum UV index in September is 3. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for ordinary individuals.Note: The maximum daily UV index of 3 in September interprets into the following recommendations:
Exercise prevention - Precautions against solar damage are endorsed. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses.
Frequently asked questions
What is the temperature in September in Swettenham?
What is the average humidity in September in Swettenham?
How many days does it rain in September in Swettenham?
When it does not snow in Swettenham?
How many hours of daylight does Swettenham have in September?
What time are sunrise and sunset in September in Swettenham?
How long on average sun shines in September in Swettenham?
What is the UV index intensity in September in Swettenham?
Average temperature in September
Swettenham, United Kingdom
- Average high temperature in September: 16.1°C
The warmest month (with the highest average high temperature) is July (18.8°C).
The month with the lowest average high temperature is January (5.2°C).
- Average low temperature in September: 8.9°C
The month with the highest average low temperature is August (11.1°C).
The coldest month (with the lowest average low temperature) is January (1.1°C).
Average pressure in September
Swettenham, United Kingdom
- Average pressure in September: 1015.7mbar
The month with the highest atmospheric pressure is May (1016.3mbar).
The month with the lowest atmospheric pressure is November (1009.2mbar).
Average wind speed in September
Swettenham, United Kingdom
- Average wind speed in September: 13.4km/h
The windiest month (with the highest average wind speed) is February (18.4km/h).
The calmest month (with the lowest average wind speed) is July (12.8km/h).
Average humidity in September
Swettenham, United Kingdom
- Average humidity in September: 86%
The month with the highest relative humidity is December (92%).
The month with the lowest relative humidity is May (82%).
Average rainfall in September
Swettenham, United Kingdom
- Average rainfall in September: 44mm
The wettest months (with the highest rainfall) are August and November (65mm).
The driest month (with the least rainfall) is April (28mm).
Average rainfall days in September
Swettenham, United Kingdom
- Average rainfall days in September: 14.8 days
The month with the highest number of rainy days is July (19.7 days).
The month with the least rainy days is February (13.1 days).
Average snowfall in September
Swettenham, United Kingdom
- Average snowfall in September: 0mm
The month with the highest snowfall is February (49mm).
The months with the least snowfall are June, July, August, September and October (0mm).
Average snowfall days in September
Swettenham, United Kingdom
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (5.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Swettenham, United Kingdom
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 16h and 54min).
The month with the shortest days is December (Average daylight: 7h and 36min).
- Average sunshine in September: 6h and 1min
The months with the most sunshine are April and May (Average sunshine: 6h and 42min).
The month with the least sunshine is February (Average sunshine: 3h and 18min).
Average sunshine days in September
Swettenham, United Kingdom
- Average sunshine days in September: 10.9 days
The month with the most sunshine days is March (12.8 days).
The month with the least sunshine days is November (8.5 days).
Average UV index in September
Swettenham, United Kingdom
- Average UV index in September: 3
The months with the highest UV index are May, June, July and August (UV index 4).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in September
Swettenham, United Kingdom
- Average cloud cover in September: 59
The months with the most cloud cover are January and November (Cloud cover 67).
The month with the least cloud cover is April (Cloud cover 55).
Average visibility in September
Swettenham, United Kingdom
- Average visibility in September: 8km
The months with the highest visibility are March and May (9km).
The months with the lowest visibility are January, February, April, June, July, August, September, October, November and December (8km).
Swettenham, United Kingdom
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