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 the onset of September, a modest change to a still comfortable 16.9°C (62.4°F) from August's 19.1°C (66.4°F) is noted in high-temperature. Rainhill's temperature tends to fall to an average low of 10.9°C (51.6°F) during the nights of September.Humidity
In September, the average relative humidity in Rainhill is 81%.Rainfall
In Rainhill, in September, it is raining for 15 days, with typically 39mm (1.54") of accumulated precipitation. Throughout the year, in Rainhill, there are 203 rainfall days, and 552mm (21.73") of precipitation is accumulated.Snowfall
April through October are months without snowfall.Daylight
In September, the average length of the day is 12h and 41min.On the first day of the month, sunrise is at 6:21 am and sunset at 8:00 pm. On the last day of September, in Rainhill, sunrise is at 7:11 am and sunset at 6:49 pm BST.
Sunshine
In Rainhill, the average sunshine in September is 6.6h.UV index
The months with the highest UV index are May through September, with an average maximum UV index of 4. A UV Index value of 3 to 5 symbolizes a moderate health risk from unsafe exposure to 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. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim.
Frequently asked questions
What are September temperatures in Rainhill?
What is the average humidity in September in Rainhill?
How much does it rain in Rainhill in September?
When it does not snow in Rainhill?
What is the average length of the day in September in Rainhill?
When are sunrise and sunset in September in Rainhill?
How long on average sun shines in September in Rainhill?
What is the month with the highest UV index in Rainhill?
What is the UV index reading in September in Rainhill?
Average temperature in September
Rainhill, United Kingdom
- Average high temperature in September: 16.9°C
The warmest month (with the highest average high temperature) is July (19.3°C).
The month with the lowest average high temperature is January (6.6°C).
- Average low temperature in September: 10.9°C
The month with the highest average low temperature is August (12.8°C).
The coldest months (with the lowest average low temperature) are January and February (2.8°C).
Average pressure in September
Rainhill, United Kingdom
- Average pressure in September: 1015.5mbar
The month with the highest atmospheric pressure is May (1016.2mbar).
The month with the lowest atmospheric pressure is November (1008.9mbar).
Average wind speed in September
Rainhill, United Kingdom
- Average wind speed in September: 14.1km/h
The windiest months (with the highest average wind speed) are January and February (18.5km/h).
The calmest month (with the lowest average wind speed) is June (12.7km/h).
Average humidity in September
Rainhill, United Kingdom
- Average humidity in September: 81%
The months with the highest relative humidity are January and December (86%).
The month with the lowest relative humidity is May (77%).
Average rainfall in September
Rainhill, United Kingdom
- Average rainfall in September: 39mm
The wettest month (with the highest rainfall) is December (59mm).
The driest month (with the least rainfall) is April (27mm).
Average rainfall days in September
Rainhill, United Kingdom
- Average rainfall days in September: 15 days
The month with the highest number of rainy days is August (20.1 days).
The month with the least rainy days is March (14 days).
Average snowfall in September
Rainhill, United Kingdom
- Average snowfall in September: 0mm
The month with the highest snowfall is January (24mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in September
Rainhill, United Kingdom
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (2.3 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
Rainhill, United Kingdom
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 16h and 54min).
The month with the shortest days is December (Average daylight: 7h and 36min).
- Average sunshine in September: 6h and 4min
The months with the most sunshine are April and May (Average sunshine: 7h and 30min).
The months with the least sunshine are January, February, November and December (Average sunshine: 3h and 54min).
Average sunshine days in September
Rainhill, United Kingdom
- Average sunshine days in September: 10.8 days
The month with the most sunshine days is March (14.4 days).
The month with the least sunshine days is August (7.4 days).
Average UV index in September
Rainhill, United Kingdom
- Average UV index in September: 4
The months with the highest UV index are May, June, July, August and September (UV index 4).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Rainhill, United Kingdom
- Average cloud cover in September: 53
The month with the most cloud cover is December (Cloud cover 62).
The month with the least cloud cover is April (Cloud cover 49).
Average visibility in September
Rainhill, United Kingdom
- Average visibility in September: 9km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
Rainhill, United Kingdom
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