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
The advent of September signifies a minor shift to an average high-temperature of an enjoyable 17.9°C (64.2°F), aligning closely with August. In Boothby Graffoe, the average low-temperature during the month of September is a cool 10.6°C (51.1°F).Humidity
In Boothby Graffoe, the average relative humidity in September is 79%.Rainfall
In Boothby Graffoe, United Kingdom, in September, it is raining for 11.2 days, with typically 22mm (0.87") of accumulated precipitation. Throughout the year, in Boothby Graffoe, there are 158.5 rainfall days, and 307mm (12.09") of precipitation is accumulated.Snowfall
In Boothby Graffoe, 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 6:13 am and sunset at 7:50 pm. On the last day of September, sunrise is at 7:02 am and sunset at 6:41 pm BST.
Sunshine
The average sunshine in September in Boothby Graffoe is 6.9h.UV index
The months with the highest UV index are May through September, with an average maximum UV index of 4. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for the average person.Note: The maximum daily UV index of 4 during September translates into the following directions:
Take care. Persons with lighter skin might suffer burns in less than 30 minutes. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage.
Frequently asked questions
What is the temperature in September in Boothby Graffoe?
What is the average humidity in September in Boothby Graffoe?
How many days does it rain in September in Boothby Graffoe?
When it does not snow in Boothby Graffoe?
How many hours of daylight does Boothby Graffoe have in September?
What time are sunrise and sunset in September in Boothby Graffoe?
How long on average sun shines in September in Boothby Graffoe?
When is the highest UV index in Boothby Graffoe?
How high is the UV index in September in Boothby Graffoe?
Average temperature in September
Boothby Graffoe, United Kingdom
- Average high temperature in September: 17.9°C
The warmest months (with the highest average high temperature) are July and August (20.3°C).
The month with the lowest average high temperature is January (5.8°C).
- Average low temperature in September: 10.6°C
The month with the highest average low temperature is August (12.9°C).
The coldest month (with the lowest average low temperature) is January (1.7°C).
Average pressure in September
Boothby Graffoe, United Kingdom
- Average pressure in September: 1015.8mbar
The month with the highest atmospheric pressure is May (1016.4mbar).
The month with the lowest atmospheric pressure is November (1009.4mbar).
Average wind speed in September
Boothby Graffoe, United Kingdom
- Average wind speed in September: 13.6km/h
The windiest months (with the highest average wind speed) are February and December (18.3km/h).
The calmest month (with the lowest average wind speed) is July (12.6km/h).
Average humidity in September
Boothby Graffoe, United Kingdom
- Average humidity in September: 79%
The month with the highest relative humidity is December (90%).
The month with the lowest relative humidity is August (76%).
Average rainfall in September
Boothby Graffoe, United Kingdom
- Average rainfall in September: 22mm
The wettest month (with the highest rainfall) is June (37mm).
The driest month (with the least rainfall) is April (15mm).
Average rainfall days in September
Boothby Graffoe, United Kingdom
- Average rainfall days in September: 11.2 days
The month with the highest number of rainy days is July (16.4 days).
The month with the least rainy days is February (11.1 days).
Average snowfall in September
Boothby Graffoe, United Kingdom
- Average snowfall in September: 0mm
The month with the highest snowfall is February (30mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in September
Boothby Graffoe, United Kingdom
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (5 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
Boothby Graffoe, 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 5min
The month with the most sunshine is August (Average sunshine: 7h and 42min).
The month with the least sunshine is February (Average sunshine: 3h and 48min).
Average sunshine days in September
Boothby Graffoe, United Kingdom
- Average sunshine days in September: 15.6 days
The month with the most sunshine days is September (15.6 days).
The month with the least sunshine days is July (10.2 days).
Average UV index in September
Boothby Graffoe, United Kingdom
- Average UV index in September: 4
The months with the highest UV index are May, June, July, August and September (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
Boothby Graffoe, United Kingdom
- Average cloud cover in September: 50
The months with the most cloud cover are February and November (Cloud cover 61).
The month with the least cloud cover is September (Cloud cover 50).
Average visibility in September
Boothby Graffoe, United Kingdom
- Average visibility in September: 9km
The months with the highest visibility are January, February, March, April, May, July, August, September, October and December (9km).
The months with the lowest visibility are June and November (8km).
Boothby Graffoe, United Kingdom
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