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
Alfriston notes an average high-temperature of a still enjoyable 17.7°C (63.9°F) in September, displaying minor variation from August. September records a small disparity from daytime temperatures, marking an average low-temperature of 13.4°C (56.1°F).Humidity
The least humid month is September, with an average relative humidity of 79%.Rainfall
In Alfriston, United Kingdom, in September, it is raining for 10.2 days, with typically 19mm (0.75") of accumulated precipitation. Throughout the year, in Alfriston, there are 145.9 rainfall days, and 247mm (9.72") of precipitation is accumulated.Snowfall
March, May through October are months without snowfall in Alfriston.Daylight
The average length of the day in September in Alfriston is 12h and 37min.On the first day of the month, sunrise is at 6:14 am and sunset at 7:44 pm. On the last day of September, sunrise is at 6:59 am and sunset at 6:39 pm BST.
Sunshine
In Alfriston, the average sunshine in September is 8.4h.UV index
The average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for average individuals.Note: The maximum daily UV index, 4 in September, converts into the following recommendations:
Make use of precautions - Suggestions to resist sunburn are communicated. Minimize direct exposure to the Sun during midday when its radiation is at its peak. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes.
Frequently asked questions
What is the temperature in September in Alfriston?
What is the least humid month in Alfriston?
What is the average humidity in September in Alfriston?
How many days does it rain in September in Alfriston?
When it does not snow in Alfriston?
What is the average length of the day in September in Alfriston?
When is the sunrise / sunset in September in Alfriston?
How many hours of sunshine does Alfriston have in September?
What is the UV index reading in September in Alfriston?
Average temperature in September
Alfriston, United Kingdom
- Average high temperature in September: 17.7°C
The warmest month (with the highest average high temperature) is August (19.3°C).
The month with the lowest average high temperature is February (7.5°C).
- Average low temperature in September: 13.4°C
The month with the highest average low temperature is August (15°C).
The coldest month (with the lowest average low temperature) is January (4.6°C).
Average pressure in September
Alfriston, United Kingdom
- Average pressure in September: 1017.4mbar
The month with the highest atmospheric pressure is September (1017.4mbar).
The month with the lowest atmospheric pressure is November (1011.1mbar).
Average wind speed in September
Alfriston, United Kingdom
- Average wind speed in September: 19.5km/h
The windiest month (with the highest average wind speed) is December (26.6km/h).
The calmest month (with the lowest average wind speed) is July (17.9km/h).
Average humidity in September
Alfriston, United Kingdom
- Average humidity in September: 79%
The months with the highest relative humidity are January and December (84%).
The month with the lowest relative humidity is September (79%).
Average rainfall in September
Alfriston, United Kingdom
- Average rainfall in September: 19mm
The wettest month (with the highest rainfall) is November (32mm).
The driest month (with the least rainfall) is April (12mm).
Average rainfall days in September
Alfriston, United Kingdom
- Average rainfall days in September: 10.2 days
The month with the highest number of rainy days is November (15 days).
The month with the least rainy days is September (10.2 days).
Average snowfall in September
Alfriston, United Kingdom
- Average snowfall in September: 0mm
The month with the highest snowfall is February (4mm).
The months with the least snowfall are March, May, June, July, August, September and October (0mm).
Average snowfall days in September
Alfriston, United Kingdom
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (1.8 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
Alfriston, United Kingdom
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 16h and 24min).
The month with the shortest days is December (Average daylight: 8h and 0min).
- Average sunshine in September: 8h and 2min
The month with the most sunshine is July (Average sunshine: 9h and 24min).
The month with the least sunshine is February (Average sunshine: 3h and 54min).
Average sunshine days in September
Alfriston, United Kingdom
- Average sunshine days in September: 16.3 days
The months with the most sunshine days are March and September (16.3 days).
The month with the least sunshine days is November (10.9 days).
Average UV index in September
Alfriston, 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 and November (UV index 2).
Average cloud cover in September
Alfriston, United Kingdom
- Average cloud cover in September: 40
The months with the most cloud cover are January, February and November (Cloud cover 58).
The months with the least cloud cover are July, August and September (Cloud cover 40).
Average visibility in September
Alfriston, United Kingdom
- Average visibility in September: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
Alfriston, United Kingdom
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