September weather forecastErith, United Kingdom
September
Weather in September
The first month of the autumn, September, is still a comfortable month in Erith, United Kingdom, with an average temperature fluctuating between 18.9°C (66°F) and 11.6°C (52.9°F).Temperature
Erith starts September with an average high-temperature of a comfortable 18.9°C (66°F), hinting at a minimal fluctuation from August. Erith's temperature lowers to a mean of 11.6°C (52.9°F) during the nights in September.Humidity
The average relative humidity in September in Erith is 77%.Rainfall
In September, the rain falls for 9.1 days. Throughout September, 18mm (0.71") of precipitation is accumulated. In Erith, United Kingdom, during the entire year, the rain falls for 150.3 days and collects up to 287mm (11.3") of precipitation.Snowfall
In Erith, snow does not fall in May through October.Daylight
In Erith, the average length of the day in September is 12h and 38min.On the first day of September, sunrise is at 6:12 am and sunset at 7:45 pm. On the last day of the month, sunrise is at 6:59 am and sunset at 6:38 pm BST.
Sunshine
The average sunshine in September in Erith is 7.4h.UV index
The average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for the ordinary person.Note: The daily maximum UV index of 4 in September interprets into the following advice:
Preventative actions are necessary - Suggestions to safeguard against sun damage are in order. It's recommended to limit sun exposure when its radiation is at its peak during midday. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Erith, United Kingdom
- Average high temperature in September: 18.9°C
The warmest month (with the highest average high temperature) is July (22°C).
The month with the lowest average high temperature is January (6.7°C).
- Average low temperature in September: 11.6°C
The month with the highest average low temperature is August (14°C).
The coldest month (with the lowest average low temperature) is January (2.5°C).
Average pressure in September
Erith, United Kingdom
- Average pressure in September: 1016.9mbar
The month with the highest atmospheric pressure is September (1016.9mbar).
The month with the lowest atmospheric pressure is November (1010.6mbar).
Average wind speed in September
Erith, United Kingdom
- Average wind speed in September: 13.1km/h
The windiest month (with the highest average wind speed) is February (17.9km/h).
The calmest month (with the lowest average wind speed) is July (12.9km/h).
Average humidity in September
Erith, United Kingdom
- Average humidity in September: 77%
The month with the highest relative humidity is December (89%).
The month with the lowest relative humidity is August (73%).
Average rainfall in September
Erith, United Kingdom
- Average rainfall in September: 18mm
The wettest month (with the highest rainfall) is December (32mm).
The driest month (with the least rainfall) is April (15mm).
Average rainfall days in September
Erith, United Kingdom
- Average rainfall days in September: 9.1 days
The month with the highest number of rainy days is July (15.8 days).
The month with the least rainy days is September (9.1 days).
Average snowfall in September
Erith, United Kingdom
- Average snowfall in September: 0mm
The month with the highest snowfall is February (21mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in September
Erith, United Kingdom
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (3.8 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
Erith, United Kingdom
- Average daylight in September: 12h and 36min
The month with the longest days is June (Average daylight: 16h and 36min).
The month with the shortest days is December (Average daylight: 7h and 54min).
- Average sunshine in September: 7h and 24min
The months with the most sunshine are July and August (Average sunshine: 8h and 12min).
The month with the least sunshine is February (Average sunshine: 3h and 36min).
Average sunshine days in September
Erith, United Kingdom
- Average sunshine days in September: 17.8 days
The month with the most sunshine days is September (17.8 days).
The month with the least sunshine days is February (12.2 days).
Average UV index in September
Erith, 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
Erith, United Kingdom
- Average cloud cover in September: 47
The month with the most cloud cover is February (Cloud cover 61).
The months with the least cloud cover are August and September (Cloud cover 47).
Average visibility in September
Erith, United Kingdom
- Average visibility in September: 9km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
