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
September
Weather in September
Temperature
During September, Dolgellau observes a subtle ascent to a moderate 15°C (59°F) from August's 16.8°C (62.2°F) in the average high-temperature. In Dolgellau, the September nights cool down to an average low of 9.3°C (48.7°F).Humidity
In September, the average relative humidity in Dolgellau is 88%.Rainfall
In Dolgellau, in September, during 16.9 rainfall days, 58mm (2.28") of precipitation is typically accumulated. Throughout the year, in Dolgellau, there are 218 rainfall days, and 849mm (33.43") of precipitation is accumulated.Snowfall
June through October are months without snowfall.Daylight
The average length of the day in September in Dolgellau is 12h and 40min.On the first day of September, sunrise is at 6:27 am and sunset at 8:03 pm. On the last day of the month, sunrise is at 7:16 am and sunset at 6:54 pm BST.
Sunshine
In Dolgellau, the average sunshine in September is 5.7h.UV index
In Dolgellau, the average daily maximum UV index in September is 3. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for ordinary individuals.Note: A typical high UV index of 3 in September suggests the following recommendations:
Guard yourself - Precautionary measures against sun damage are advocated. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September in Dolgellau?
What is the average humidity in September in Dolgellau?
How many days does it rain in September in Dolgellau?
When it does not snow in Dolgellau?
What is the average length of the day in September in Dolgellau?
When are sunrise and sunset in September in Dolgellau?
How many hours of sunshine does Dolgellau have in September?
How high is the UV index in September in Dolgellau?
Average temperature in September
Dolgellau, United Kingdom
- Average high temperature in September: 15°C
The warmest month (with the highest average high temperature) is July (17.2°C).
The month with the lowest average high temperature is January (5.8°C).
- Average low temperature in September: 9.3°C
The month with the highest average low temperature is August (10.8°C).
The coldest month (with the lowest average low temperature) is February (1.9°C).
Average pressure in September
Dolgellau, United Kingdom
- Average pressure in September: 1016mbar
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
Dolgellau, United Kingdom
- Average wind speed in September: 13.8km/h
The windiest month (with the highest average wind speed) is December (19.1km/h).
The calmest month (with the lowest average wind speed) is June (11.9km/h).
Average humidity in September
Dolgellau, United Kingdom
- Average humidity in September: 88%
The month with the highest relative humidity is January (90%).
The months with the lowest relative humidity are April and May (83%).
Average rainfall in September
Dolgellau, United Kingdom
- Average rainfall in September: 58mm
The wettest month (with the highest rainfall) is December (94mm).
The driest month (with the least rainfall) is May (41mm).
Average rainfall days in September
Dolgellau, United Kingdom
- Average rainfall days in September: 16.9 days
The month with the highest number of rainy days is November (21 days).
The month with the least rainy days is February (14.7 days).
Average snowfall in September
Dolgellau, United Kingdom
- Average snowfall in September: 0mm
The month with the highest snowfall is January (57mm).
The months with the least snowfall are June, July, August, September and October (0mm).
Average snowfall days in September
Dolgellau, United Kingdom
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (5.7 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Dolgellau, United Kingdom
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 16h and 48min).
The month with the shortest days is December (Average daylight: 7h and 42min).
- Average sunshine in September: 5h and 4min
The month with the most sunshine is May (Average sunshine: 7h and 6min).
The month with the least sunshine is December (Average sunshine: 3h and 6min).
Average sunshine days in September
Dolgellau, United Kingdom
- Average sunshine days in September: 9.7 days
The month with the most sunshine days is March (11.7 days).
The month with the least sunshine days is November (6.4 days).
Average UV index in September
Dolgellau, 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
Dolgellau, United Kingdom
- Average cloud cover in September: 60
The month with the most cloud cover is December (Cloud cover 70).
The month with the least cloud cover is April (Cloud cover 54).
Average visibility in September
Dolgellau, United Kingdom
- Average visibility in September: 8km
The months with the highest visibility are March, April, November and December (9km).
The months with the lowest visibility are January, February, May, June, July, August, September and October (8km).
