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
Shifting into September, Lower Hartwell records an average high-temperature of a refreshing 18.2°C (64.8°F), presenting minor fluctuations compared to the previous month. Throughout September, the average low-temperature dips to a cool 10.5°C (50.9°F).Humidity
In Lower Hartwell, the average relative humidity in September is 81%.Rainfall
In September, in Lower Hartwell, the rain falls for 13.4 days. Throughout September, 29mm (1.14") of precipitation is accumulated. Throughout the year, there are 187.4 rainfall days, and 476mm (18.74") of precipitation is accumulated.Snowfall
In Lower Hartwell, snow does not fall in April through November.Daylight
In September, the average length of the day is 12h and 38min.On the first day of the month, sunrise is at 6:16 am and sunset at 7:49 pm. On the last day of September, sunrise is at 7:03 am and sunset at 6:42 pm BST.
Sunshine
In Lower Hartwell, the average sunshine in September is 7.1h.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 exposure to the Sun's UV radiation for average individuals.Note: In September, an average UV index of 4 transforms into the following instructions:
Be vigilant - Preventing sunburn is recommended. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. Stay sun-safe with clothing that is both closely woven and worn loosely.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures in Lower Hartwell?
What is the average humidity in September in Lower Hartwell?
How many days does it rain in September in Lower Hartwell?
When it does not snow in Lower Hartwell?
How many hours of daylight does Lower Hartwell have in September?
When is the sunrise / sunset in September in Lower Hartwell?
How many hours of sunshine does Lower Hartwell have in September?
What is the UV index reading in September in Lower Hartwell?
Average temperature in September
Lower Hartwell, United Kingdom
- Average high temperature in September: 18.2°C
The warmest month (with the highest average high temperature) is July (21.2°C).
The month with the lowest average high temperature is January (6.4°C).
- Average low temperature in September: 10.5°C
The month with the highest average low temperature is August (12.7°C).
The coldest month (with the lowest average low temperature) is January (1.5°C).
Average pressure in September
Lower Hartwell, United Kingdom
- Average pressure in September: 1016.7mbar
The months with the highest atmospheric pressure are May and September (1016.7mbar).
The month with the lowest atmospheric pressure is November (1010.2mbar).
Average wind speed in September
Lower Hartwell, United Kingdom
- Average wind speed in September: 13.2km/h
The windiest month (with the highest average wind speed) is February (18.3km/h).
The calmest month (with the lowest average wind speed) is July (12.8km/h).
Average humidity in September
Lower Hartwell, United Kingdom
- Average humidity in September: 81%
The month with the highest relative humidity is December (91%).
The month with the lowest relative humidity is August (78%).
Average rainfall in September
Lower Hartwell, United Kingdom
- Average rainfall in September: 29mm
The wettest month (with the highest rainfall) is June (62mm).
The driest month (with the least rainfall) is April (26mm).
Average rainfall days in September
Lower Hartwell, United Kingdom
- Average rainfall days in September: 13.4 days
The month with the highest number of rainy days is July (21.1 days).
The month with the least rainy days is February (11.8 days).
Average snowfall in September
Lower Hartwell, United Kingdom
- Average snowfall in September: 0mm
The months with the highest snowfall are January and February (17mm).
The months with the least snowfall are April, May, June, July, August, September, October and November (0mm).
Average snowfall days in September
Lower Hartwell, United Kingdom
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (3.3 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
Lower Hartwell, United Kingdom
- Average daylight in September: 12h and 4min
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 1min
The month with the most sunshine is July (Average sunshine: 7h and 48min).
The month with the least sunshine is February (Average sunshine: 3h and 48min).
Average sunshine days in September
Lower Hartwell, United Kingdom
- Average sunshine days in September: 12.6 days
The month with the most sunshine days is March (14.6 days).
The month with the least sunshine days is August (6.7 days).
Average UV index in September
Lower Hartwell, 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
Lower Hartwell, 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
Lower Hartwell, 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).
