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 onset records an average high-temperature of a comfortable 18.4°C (65.1°F), a near match to August's 20.5°C (68.9°F). Chalkwell experiences a consistent average temperature of 12.9°C (55.2°F) throughout the nights in September.Humidity
In Chalkwell, the average relative humidity in September is 78%.Rainfall
In Chalkwell, during September, the rain falls for 13.4 days and regularly aggregates up to 32mm (1.26") of precipitation. Throughout the year, in Chalkwell, there are 189.8 rainfall days, and 495mm (19.49") of precipitation is accumulated.Snowfall
In Chalkwell, snow does not fall in April through October.Daylight
In September, the average length of the day in Chalkwell is 12h and 38min.On the first day of September, sunrise is at 6:10 am and sunset at 7:43 pm. On the last day of the month, sunrise is at 6:57 am and sunset at 6:36 pm BST.
Sunshine
In Chalkwell, the average sunshine in September is 8.1h.UV index
In September, the average daily maximum UV index in Chalkwell is 4. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for ordinary individuals.Note: The average daily UV index of 4 in September transforms into the following instructions:
Exercise prevention - Protecting skin and eyes from harm is required. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September in Chalkwell?
What is the average humidity in September in Chalkwell?
How many days does it rain in September in Chalkwell?
When it does not snow in Chalkwell?
What is the average length of the day in September in Chalkwell?
When is the sunrise / sunset in September in Chalkwell?
How long on average sun shines in September in Chalkwell?
What is the UV index intensity in September in Chalkwell?
Average temperature in September
Chalkwell, United Kingdom
- Average high temperature in September: 18.4°C
The warmest month (with the highest average high temperature) is August (20.5°C).
The month with the lowest average high temperature is January (7.1°C).
- Average low temperature in September: 12.9°C
The month with the highest average low temperature is August (15°C).
The coldest month (with the lowest average low temperature) is January (3.5°C).
Average pressure in September
Chalkwell, United Kingdom
- Average pressure in September: 1017.1mbar
The month with the highest atmospheric pressure is September (1017.1mbar).
The month with the lowest atmospheric pressure is November (1010.9mbar).
Average wind speed in September
Chalkwell, United Kingdom
- Average wind speed in September: 16.8km/h
The windiest month (with the highest average wind speed) is December (22.5km/h).
The calmest month (with the lowest average wind speed) is July (15.4km/h).
Average humidity in September
Chalkwell, United Kingdom
- Average humidity in September: 78%
The months with the highest relative humidity are January and December (86%).
The month with the lowest relative humidity is August (76%).
Average rainfall in September
Chalkwell, United Kingdom
- Average rainfall in September: 32mm
The wettest month (with the highest rainfall) is August (53mm).
The driest month (with the least rainfall) is April (24mm).
Average rainfall days in September
Chalkwell, United Kingdom
- Average rainfall days in September: 13.4 days
The month with the highest number of rainy days is July (18.9 days).
The months with the least rainy days are March and September (13.4 days).
Average snowfall in September
Chalkwell, United Kingdom
- Average snowfall in September: 0mm
The month with the highest snowfall is February (17mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in September
Chalkwell, United Kingdom
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (3.6 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
Chalkwell, United Kingdom
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 16h and 30min).
The month with the shortest days is December (Average daylight: 8h and 0min).
- Average sunshine in September: 8h and 1min
The month with the most sunshine is August (Average sunshine: 9h and 0min).
The month with the least sunshine is February (Average sunshine: 3h and 54min).
Average sunshine days in September
Chalkwell, United Kingdom
- Average sunshine days in September: 12.5 days
The month with the most sunshine days is March (14 days).
The month with the least sunshine days is November (8.3 days).
Average UV index in September
Chalkwell, 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
Chalkwell, United Kingdom
- Average cloud cover in September: 40
The month with the most cloud cover is February (Cloud cover 59).
The month with the least cloud cover is September (Cloud cover 40).
Average visibility in September
Chalkwell, United Kingdom
- Average visibility in September: 10km
The months with the highest visibility are March, April, June, July, August and September (10km).
The months with the lowest visibility are January, February, May, October, November and December (9km).
