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
Weather in September
Temperature
With September's arrival, North Waltham's weather records an average high-temperature of a comfortable 18.5°C (65.3°F), marking little difference from August's 20.7°C (69.3°F). Throughout the month of September, North Waltham witnesses an average temperature of 10.5°C (50.9°F).Humidity
In North Waltham, United Kingdom, the average relative humidity in September is 81%.Rainfall
The months with the least rainfall in North Waltham are April and September Rain falls for 7.9 days and accumulates 9mm (0.35") of rain.Snowfall
In North Waltham, snow does not fall in April through November.Daylight
The average length of the day in September is 12h and 38min.On the first day of the month, sunrise is at 6:18 am and sunset at 7:50 pm. On the last day of September, in North Waltham, sunrise is at 7:04 am and sunset at 6:44 pm BST.
Sunshine
In North Waltham, United Kingdom, the average sunshine in September is 7.3h.UV index
In September, the average daily maximum UV index in North Waltham is 4. A UV Index value of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The maximum UV index of 4 during September leads to these instructions:
Be vigilant - Preventing sunburn is recommended. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days.
Frequently asked questions
What is the usual temperature for North Waltham in September?
What is the average humidity in September in North Waltham?
What is the driest month in North Waltham?
How many days does it rain in September in North Waltham?
When it does not snow in North Waltham?
How many hours of daylight does North Waltham have in September?
When are sunrise and sunset in September in North Waltham?
How long on average sun shines in September in North Waltham?
What is the UV index reading in September in North Waltham?
Average temperature in September
North Waltham, United Kingdom
- Average high temperature in September: 18.5°C
The warmest month (with the highest average high temperature) is July (21.1°C).
The month with the lowest average high temperature is January (6.8°C).
- Average low temperature in September: 10.5°C
The month with the highest average low temperature is August (12.6°C).
The coldest month (with the lowest average low temperature) is January (2°C).
Average pressure in September
North Waltham, 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 (1010.5mbar).
Average wind speed in September
North Waltham, United Kingdom
- Average wind speed in September: 13.2km/h
The windiest month (with the highest average wind speed) is February (18km/h).
The calmest month (with the lowest average wind speed) is July (13km/h).
Average humidity in September
North Waltham, United Kingdom
- Average humidity in September: 81%
The month with the highest relative humidity is December (90%).
The months with the lowest relative humidity are July and August (79%).
Average rainfall in September
North Waltham, United Kingdom
- Average rainfall in September: 9mm
The wettest month (with the highest rainfall) is December (21mm).
The driest months (with the least rainfall) are April and September (9mm).
Average rainfall days in September
North Waltham, United Kingdom
- Average rainfall days in September: 7.9 days
The month with the highest number of rainy days is November (12.7 days).
The month with the least rainy days is September (7.9 days).
Average snowfall in September
North Waltham, United Kingdom
- Average snowfall in September: 0mm
The month with the highest snowfall is February (6mm).
The months with the least snowfall are April, May, June, July, August, September, October and November (0mm).
Average snowfall days in September
North Waltham, United Kingdom
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (1.7 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
North Waltham, 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: 7h and 2min
The month with the most sunshine is July (Average sunshine: 8h and 12min).
The month with the least sunshine is February (Average sunshine: 3h and 48min).
Average sunshine days in September
North Waltham, United Kingdom
- Average sunshine days in September: 17.1 days
The month with the most sunshine days is March (17.3 days).
The month with the least sunshine days is November (13.2 days).
Average UV index in September
North Waltham, United Kingdom
- Average UV index in September: 4
The month with the highest UV index is 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
North Waltham, United Kingdom
- Average cloud cover in September: 49
The month with the most cloud cover is November (Cloud cover 62).
The month with the least cloud cover is September (Cloud cover 49).
Average visibility in September
North Waltham, United Kingdom
- Average visibility in September: 8km
The months with the highest visibility are February, March, April, May, June, July, August and December (9km).
The months with the lowest visibility are January, September, October and November (8km).
North Waltham, United Kingdom
Weather forecast for your location
2. Allow the app to use your location
