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
September's beginning signals an average high-temperature of a still comfortable 17.4°C (63.3°F), barely different from August's 19.6°C (67.3°F). Coltishall observes a slightly reduced average nighttime temperature of 13.1°C (55.6°F) during September.Humidity
The average relative humidity in September is 79%.Rainfall
In September, the rain falls for 12.2 days. Throughout September, 29mm (1.14") of precipitation is accumulated. Throughout the year, there are 170.2 rainfall days, and 400mm (15.75") of precipitation is accumulated.Snowfall
In Coltishall, United Kingdom, snow does not fall in April through October.Daylight
The average length of the day in September in Coltishall, United Kingdom, is 12h and 40min.On the first day of September, sunrise is at 6:06 am and sunset at 7:42 pm. On the last day of the month, sunrise is at 6:55 am and sunset at 6:33 pm BST.
Sunshine
In Coltishall, United Kingdom, the average sunshine in September is 8h.UV index
In Coltishall, United Kingdom, the average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for ordinary individuals.Note: The UV index of 4 in September translates into these instructions:
Make use of precautions - It is urged to ward off sun damage. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. 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 average September temperature in Coltishall?
What is the average humidity in September in Coltishall?
How much does it rain in Coltishall in September?
When it does not snow in Coltishall?
How many hours of daylight does Coltishall have in September?
What time are sunrise and sunset in September in Coltishall?
How long on average sun shines in September in Coltishall?
How high is the UV index in September in Coltishall?
Average temperature in September
Coltishall, United Kingdom
- Average high temperature in September: 17.4°C
The warmest month (with the highest average high temperature) is August (19.6°C).
The month with the lowest average high temperature is January (6.6°C).
- Average low temperature in September: 13.1°C
The month with the highest average low temperature is August (15°C).
The coldest month (with the lowest average low temperature) is February (3.5°C).
Average pressure in September
Coltishall, 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 (1009.9mbar).
Average wind speed in September
Coltishall, United Kingdom
- Average wind speed in September: 18.4km/h
The windiest month (with the highest average wind speed) is December (25.1km/h).
The calmest month (with the lowest average wind speed) is July (15.7km/h).
Average humidity in September
Coltishall, United Kingdom
- Average humidity in September: 79%
The month with the highest relative humidity is December (85%).
The month with the lowest relative humidity is August (77%).
Average rainfall in September
Coltishall, United Kingdom
- Average rainfall in September: 29mm
The wettest month (with the highest rainfall) is October (45mm).
The driest month (with the least rainfall) is April (17mm).
Average rainfall days in September
Coltishall, United Kingdom
- Average rainfall days in September: 12.2 days
The month with the highest number of rainy days is July (17.8 days).
The month with the least rainy days is February (11.2 days).
Average snowfall in September
Coltishall, United Kingdom
- Average snowfall in September: 0mm
The months with the highest snowfall are January and February (12mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in September
Coltishall, United Kingdom
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (2.6 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
Coltishall, 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: 8h and 0min
The month with the most sunshine is August (Average sunshine: 9h and 12min).
The month with the least sunshine is February (Average sunshine: 3h and 54min).
Average sunshine days in September
Coltishall, United Kingdom
- Average sunshine days in September: 14.9 days
The month with the most sunshine days is March (16 days).
The month with the least sunshine days is July (10.5 days).
Average UV index in September
Coltishall, United Kingdom
- Average UV index in September: 4
The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Coltishall, United Kingdom
- Average cloud cover in September: 42
The month with the most cloud cover is January (Cloud cover 60).
The month with the least cloud cover is August (Cloud cover 41).
Average visibility in September
Coltishall, United Kingdom
- Average visibility in September: 10km
The months with the highest visibility are February, March, April, May, June, July, August, September, October and November (10km).
The months with the lowest visibility are January and December (9km).
