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
A minor adjustment in Hailsham's average high-temperature is noted with the start of September, touching a refreshing 17.9°C (64.2°F) from August's 20.3°C (68.5°F). Hailsham throughout September, experiences an average nighttime temperature of 12.4°C (54.3°F).Humidity
In September, the average relative humidity is 80%.Rainfall
In Hailsham, during September, the rain falls for 12.5 days and regularly aggregates up to 27mm (1.06") of precipitation. In Hailsham, United Kingdom, during the entire year, the rain falls for 173.4 days and collects up to 408mm (16.06") of precipitation.Snowfall
In Hailsham, United Kingdom, snow does not fall in May through October.Daylight
In Hailsham, the average length of the day in September is 12h and 38min.On the first day of the month, sunrise is at 6:13 am and sunset at 7:44 pm. On the last day of September, sunrise is at 6:58 am and sunset at 6:38 pm BST.
Sunshine
In Hailsham, the average sunshine in September is 8.1h.UV index
In September, the average daily maximum UV index is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for ordinary individuals.Note: The UV index of 4 during September translates into the following guidance:
Be cautious. Those with fair skin can be subjected to burns in fewer than 30 minutes. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation.
Frequently asked questions
What is the temperature in September in Hailsham?
What is the average humidity in September in Hailsham?
How many days does it rain in September in Hailsham?
When it does not snow in Hailsham?
How many hours of daylight does Hailsham have in September?
What time are sunrise and sunset in September in Hailsham?
How many hours of sunshine does Hailsham have in September?
How high is the UV index in September in Hailsham?
Average temperature in September
Hailsham, United Kingdom
- Average high temperature in September: 17.9°C
The warmest month (with the highest average high temperature) is August (20.3°C).
The month with the lowest average high temperature is January (7.2°C).
- Average low temperature in September: 12.4°C
The month with the highest average low temperature is August (14.2°C).
The coldest month (with the lowest average low temperature) is January (3.6°C).
Average pressure in September
Hailsham, United Kingdom
- Average pressure in September: 1017.3mbar
The month with the highest atmospheric pressure is September (1017.3mbar).
The month with the lowest atmospheric pressure is November (1011.1mbar).
Average wind speed in September
Hailsham, United Kingdom
- Average wind speed in September: 16.7km/h
The windiest month (with the highest average wind speed) is December (22.6km/h).
The calmest month (with the lowest average wind speed) is July (15.7km/h).
Average humidity in September
Hailsham, United Kingdom
- Average humidity in September: 80%
The months with the highest relative humidity are January and December (86%).
The months with the lowest relative humidity are July and August (79%).
Average rainfall in September
Hailsham, United Kingdom
- Average rainfall in September: 27mm
The wettest month (with the highest rainfall) is December (51mm).
The driest month (with the least rainfall) is April (19mm).
Average rainfall days in September
Hailsham, United Kingdom
- Average rainfall days in September: 12.5 days
The month with the highest number of rainy days is November (18 days).
The month with the least rainy days is June (12 days).
Average snowfall in September
Hailsham, United Kingdom
- Average snowfall in September: 0mm
The months with the highest snowfall are February and December (11mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in September
Hailsham, United Kingdom
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (3.5 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
Hailsham, 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 1min
The month with the most sunshine is July (Average sunshine: 9h and 6min).
The month with the least sunshine is February (Average sunshine: 3h and 48min).
Average sunshine days in September
Hailsham, United Kingdom
- Average sunshine days in September: 13.5 days
The month with the most sunshine days is June (14.9 days).
The month with the least sunshine days is November (8.4 days).
Average UV index in September
Hailsham, 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, November and December (UV index 2).
Average cloud cover in September
Hailsham, United Kingdom
- Average cloud cover in September: 42
The month with the most cloud cover is February (Cloud cover 60).
The month with the least cloud cover is August (Cloud cover 41).
Average visibility in September
Hailsham, United Kingdom
- Average visibility in September: 9km
The months with the highest visibility are June, July and August (10km).
The months with the lowest visibility are January, February, March, April, May, September, October, November and December (9km).
Hailsham, United Kingdom
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