September weather forecastRollesby, United Kingdom
September weather for Rollesby, United Kingdom: September, the first month of the autumn in Rollesby, is still a comfortable month, with an average temperature varying between 17.4°C (63.3°F) and 13.7°C (56.7°F). On the first day of September in Rollesby, sunrise is at 6:05 am and sunset at 7:41 pm.
September
Weather in September
September, the first month of the autumn in Rollesby, is still a comfortable month, with an average temperature varying between 17.4°C (63.3°F) and 13.7°C (56.7°F).Temperature
As September takes its course, Rollesby's average high-temperature registers at a still comfortable 17.4°C (63.3°F), closely aligning with the preceding month. September nighttime temperatures in Rollesby hover close to the daytime peak with an average of 13.7°C (56.7°F).Humidity
In September, the average relative humidity in Rollesby is 78%.Rainfall
In September, the rain falls for 12.9 days. Throughout September, 25mm (0.98") of precipitation is accumulated. In Rollesby, during the entire year, the rain falls for 174.3 days and collects up to 337mm (13.27") of precipitation.Snowfall
April through October are months without snowfall in Rollesby.Daylight
In September, the average length of the day in Rollesby is 12h and 40min.On the first day of September, sunrise is at 6:05 am and sunset at 7:41 pm. On the last day of the month, sunrise is at 6:54 am and sunset at 6:32 pm BST.
Sunshine
In September, the average sunshine in Rollesby is 8.1h.UV index
In Rollesby, the average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for the average person.Note: In September, an average UV index of 4 transforms into the following instructions:
Act with care - The suggestion to avoid sunburn is emphasized. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Rollesby, United Kingdom
- Average high temperature in September: 17.4°C
The warmest month (with the highest average high temperature) is August (19.3°C).
The months with the lowest average high temperature are January and February (6.7°C).
- Average low temperature in September: 13.7°C
The month with the highest average low temperature is August (15.3°C).
The coldest months (with the lowest average low temperature) are January and February (4.3°C).
Average pressure in September
Rollesby, United Kingdom
- Average pressure in September: 1016.2mbar
The month with the highest atmospheric pressure is May (1016.5mbar).
The month with the lowest atmospheric pressure is November (1010mbar).
Average wind speed in September
Rollesby, United Kingdom
- Average wind speed in September: 20km/h
The windiest month (with the highest average wind speed) is December (27.4km/h).
The calmest month (with the lowest average wind speed) is July (17.1km/h).
Average humidity in September
Rollesby, United Kingdom
- Average humidity in September: 78%
The months with the highest relative humidity are January, June and December (83%).
The month with the lowest relative humidity is August (77%).
Average rainfall in September
Rollesby, United Kingdom
- Average rainfall in September: 25mm
The wettest month (with the highest rainfall) is October (42mm).
The driest month (with the least rainfall) is April (13mm).
Average rainfall days in September
Rollesby, United Kingdom
- Average rainfall days in September: 12.9 days
The month with the highest number of rainy days is October (17.6 days).
The month with the least rainy days is February (12 days).
Average snowfall in September
Rollesby, United Kingdom
- Average snowfall in September: 0mm
The month with the highest snowfall is January (17mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in September
Rollesby, United Kingdom
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (3.2 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
Rollesby, United Kingdom
- Average daylight in September: 12h and 42min
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: 8h and 6min
The month with the most sunshine is August (Average sunshine: 9h and 24min).
The months with the least sunshine are January and February (Average sunshine: 4h and 0min).
Average sunshine days in September
Rollesby, United Kingdom
- Average sunshine days in September: 13.3 days
The months with the most sunshine days are March and April (15.3 days).
The month with the least sunshine days is November (9.2 days).
Average UV index in September
Rollesby, United Kingdom
- Average UV index in September: 4
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Rollesby, United Kingdom
- Average cloud cover in September: 41
The month with the most cloud cover is January (Cloud cover 60).
The month with the least cloud cover is August (Cloud cover 40).
Average visibility in September
Rollesby, United Kingdom
- Average visibility in September: 10km
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (10km).
The month with the lowest visibility is January (9km).
