September weather forecastSilloth, United Kingdom
September
Weather in September
September, the first month of the autumn in Silloth, is still a mild month, with an average temperature fluctuating between 9.3°C (48.7°F) and 14.8°C (58.6°F).Temperature
Silloth's weather in September indicates an average high-temperature of a moderate 14.8°C (58.6°F), nearly consistent with the 16.4°C (61.5°F) of August. During the month of September, Silloth's nighttime temperature lowers to an average of 9.3°C (48.7°F).Humidity
The average relative humidity in September is 87%.Rainfall
In Silloth, in September, it is raining for 17.4 days, with typically 51mm (2.01") of accumulated precipitation. In Silloth, during the entire year, the rain falls for 218.8 days and collects up to 652mm (25.67") of precipitation.Snowfall
In Silloth, snow does not fall in May through October.Sea temperature
In Silloth, the average seawater temperature in September is 15.4°C (59.7°F).Note: The enjoyment of swimming decreases for most when the surface water temperature is 15.4°C (59.7°F). Breathing control becomes increasingly challenging as temperatures descend below 21°C (69.8°F).
Daylight
In September, the average length of the day is 12h and 43min.On the first day of the month, sunrise is at 6:21 am and sunset at 8:05 pm. On the last day of September, sunrise is at 7:15 am and sunset at 6:51 pm BST.
Sunshine
In Silloth, the average sunshine in September is 6.2h.UV index
In Silloth, the average daily maximum UV index in September is 3. A UV Index of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to UV radiation for ordinary individuals.Note: An average maximum UV index of 3 in September leads to these recommendations:
Be mindful. Individuals with a lighter skin tone may suffer burns in less than 30 minutes. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. A hat with a broad brim is indispensable, filtering out up to half of UV rays.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Silloth, United Kingdom
- Average high temperature in September: 14.8°C
The warmest month (with the highest average high temperature) is July (16.8°C).
The month with the lowest average high temperature is January (5.4°C).
- Average low temperature in September: 9.3°C
The month with the highest average low temperature is August (11°C).
The coldest month (with the lowest average low temperature) is February (1.8°C).
Average pressure in September
Silloth, United Kingdom
- Average pressure in September: 1014.4mbar
The month with the highest atmospheric pressure is May (1015.9mbar).
The month with the lowest atmospheric pressure is November (1007.8mbar).
Average wind speed in September
Silloth, United Kingdom
- Average wind speed in September: 15.3km/h
The windiest month (with the highest average wind speed) is December (20.7km/h).
The calmest month (with the lowest average wind speed) is June (13.1km/h).
Average humidity in September
Silloth, United Kingdom
- Average humidity in September: 87%
The months with the highest relative humidity are January, November and December (88%).
The month with the lowest relative humidity is April (82%).
Average rainfall in September
Silloth, United Kingdom
- Average rainfall in September: 51mm
The wettest month (with the highest rainfall) is August (70mm).
The driest month (with the least rainfall) is April (26mm).
Average rainfall days in September
Silloth, United Kingdom
- Average rainfall days in September: 17.4 days
The month with the highest number of rainy days is August (22.2 days).
The month with the least rainy days is April (14.5 days).
Average snowfall in September
Silloth, United Kingdom
- Average snowfall in September: 0mm
The month with the highest snowfall is January (42mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in September
Silloth, United Kingdom
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (3.3 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average sea temperature in September
Silloth, United Kingdom
- Average sea temperature in September: 15.4°C
The best month for swimming (with the highest average sea temperature) is August (15.8°C).
The coldest month (with the lowest average sea temperature) is February (7.1°C).
Average daylight in September /
Average sunshine in September
Silloth, United Kingdom
- Average daylight in September: 12h and 42min
The month with the longest days is June (Average daylight: 17h and 12min).
The month with the shortest days is December (Average daylight: 7h and 18min).
- Average sunshine in September: 6h and 12min
The month with the most sunshine is May (Average sunshine: 7h and 30min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).
Average sunshine days in September
Silloth, United Kingdom
- Average sunshine days in September: 9.5 days
The month with the most sunshine days is April (12.1 days).
The month with the least sunshine days is August (6 days).
Average UV index in September
Silloth, 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
Silloth, United Kingdom
- Average cloud cover in September: 58
The month with the most cloud cover is January (Cloud cover 64).
The month with the least cloud cover is April (Cloud cover 50).
Average visibility in September
Silloth, United Kingdom
- Average visibility in September: 9km
The months with the highest visibility are January, February, March, April, May, June, August, September, October, November and December (9km).
The month with the lowest visibility is July (8km).
