September weather forecastEltham, United Kingdom
September
Weather in September
September, the first month of the autumn in Eltham, is also an enjoyable month, with an average temperature varying between 18.7°C (65.7°F) and 11.5°C (52.7°F).Temperature
The arrival of September corresponds with a minor reduction in the average high-temperature, down from August's pleasant 21.7°C (71.1°F) to a comfortable 18.7°C (65.7°F). An average low-temperature of 11.5°C (52.7°F) marks the month of September in Eltham.Humidity
In September, the average relative humidity in Eltham is 77%.Rainfall
In September, in Eltham, the rain falls for 9.7 days. Throughout September, 21mm (0.83") of precipitation is accumulated. In Eltham, during the entire year, the rain falls for 151.6 days and collects up to 342mm (13.46") of precipitation.Snowfall
In Eltham, snow does not fall in May through October.Daylight
In Eltham, the average length of the day in September is 12h and 38min.On the first day of September in Eltham, sunrise is at 6:13 am and sunset at 7:45 pm. On the last day of the month, sunrise is at 6:59 am and sunset at 6:39 pm BST.
Sunshine
The average sunshine in September in Eltham, United Kingdom, is 7.4h.UV index
In September, the average daily maximum UV index is 4. A UV Index of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for average individuals.Note: The UV index of 4 during September translates into the following guidance:
Be vigilant - Preventing sunburn is recommended. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Eltham, United Kingdom
- Average high temperature in September: 18.7°C
The warmest month (with the highest average high temperature) is July (21.9°C).
The month with the lowest average high temperature is January (6.7°C).
- Average low temperature in September: 11.5°C
The month with the highest average low temperature is August (13.8°C).
The coldest month (with the lowest average low temperature) is January (2.4°C).
Average pressure in September
Eltham, United Kingdom
- Average pressure in September: 1017mbar
The month with the highest atmospheric pressure is September (1017mbar).
The month with the lowest atmospheric pressure is November (1010.7mbar).
Average wind speed in September
Eltham, United Kingdom
- Average wind speed in September: 12.9km/h
The windiest month (with the highest average wind speed) is February (17.7km/h).
The calmest month (with the lowest average wind speed) is September (12.9km/h).
Average humidity in September
Eltham, United Kingdom
- Average humidity in September: 77%
The month with the highest relative humidity is December (89%).
The months with the lowest relative humidity are July and August (74%).
Average rainfall in September
Eltham, United Kingdom
- Average rainfall in September: 21mm
The wettest month (with the highest rainfall) is December (38mm).
The driest month (with the least rainfall) is April (18mm).
Average rainfall days in September
Eltham, United Kingdom
- Average rainfall days in September: 9.7 days
The month with the highest number of rainy days is July (15.5 days).
The month with the least rainy days is September (9.7 days).
Average snowfall in September
Eltham, United Kingdom
- Average snowfall in September: 0mm
The month with the highest snowfall is February (23mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in September
Eltham, United Kingdom
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (4.2 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
Eltham, United Kingdom
- Average daylight in September: 12h and 36min
The month with the longest days is June (Average daylight: 16h and 30min).
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 18min).
The month with the least sunshine is February (Average sunshine: 3h and 36min).
Average sunshine days in September
Eltham, United Kingdom
- Average sunshine days in September: 17.5 days
The month with the most sunshine days is September (17.5 days).
The month with the least sunshine days is February (12.8 days).
Average UV index in September
Eltham, 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, March, November and December (UV index 2).
Average cloud cover in September
Eltham, 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
Eltham, United Kingdom
- Average visibility in September: 9km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October and December (9km).
The month with the lowest visibility is November (8km).
