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
September's commencement is accompanied by an average high-temperature of a still refreshing 17.2°C (63°F), diverging marginally from August's 19.5°C (67.1°F). An average nighttime temperature of 11.1°C (52°F) is noted in Long Riston, United Kingdom, during the month of September.Humidity
In Long Riston, the average relative humidity in September is 80%.Rainfall
In Long Riston, in September, during 10.9 rainfall days, 14mm (0.55") of precipitation is typically accumulated. In Long Riston, during the entire year, the rain falls for 146.7 days and collects up to 245mm (9.65") of precipitation.Snowfall
April through October are months without snowfall in Long Riston.Daylight
In Long Riston, the average length of the day in September is 12h and 41min.On the first day of the month, sunrise is at 6:10 am and sunset at 7:51 pm. On the last day of September, in Long Riston, United Kingdom, sunrise is at 7:02 am and sunset at 6:39 pm BST.
Sunshine
In Long Riston, the average sunshine in September is 7h.UV index
In September, the average daily maximum UV index in Long Riston is 4. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for ordinary individuals.Note: The daily high UV index of 4 during September translates into the following recommendations:
Preventative actions are necessary - Recommendations to ward off sunburn are given. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Long Riston in September?
What is the average humidity in September in Long Riston?
How much does it rain in Long Riston in September?
When it does not snow in Long Riston?
How many hours of daylight does Long Riston have in September?
When are sunrise and sunset in September in Long Riston?
How many hours of sunshine does Long Riston have in September?
What is the UV index intensity in September in Long Riston?
Average temperature in September
Long Riston, United Kingdom
- Average high temperature in September: 17.2°C
The warmest months (with the highest average high temperature) are July and August (19.5°C).
The month with the lowest average high temperature is January (5.8°C).
- Average low temperature in September: 11.1°C
The month with the highest average low temperature is August (13°C).
The coldest month (with the lowest average low temperature) is January (2.2°C).
Average pressure in September
Long Riston, United Kingdom
- Average pressure in September: 1015.3mbar
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
Long Riston, United Kingdom
- Average wind speed in September: 14.7km/h
The windiest month (with the highest average wind speed) is December (18.9km/h).
The calmest months (with the lowest average wind speed) are June and July (13.2km/h).
Average humidity in September
Long Riston, United Kingdom
- Average humidity in September: 80%
The months with the highest relative humidity are January and December (88%).
The month with the lowest relative humidity is August (77%).
Average rainfall in September
Long Riston, United Kingdom
- Average rainfall in September: 14mm
The wettest months (with the highest rainfall) are June and August (30mm).
The driest month (with the least rainfall) is April (11mm).
Average rainfall days in September
Long Riston, United Kingdom
- Average rainfall days in September: 10.9 days
The month with the highest number of rainy days is July (15.9 days).
The month with the least rainy days is February (10.1 days).
Average snowfall in September
Long Riston, United Kingdom
- Average snowfall in September: 0mm
The month with the highest snowfall is January (16mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in September
Long Riston, United Kingdom
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (3.7 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Long Riston, United Kingdom
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 17h and 0min).
The month with the shortest days is December (Average daylight: 7h and 30min).
- Average sunshine in September: 7h and 0min
The months with the most sunshine are July and August (Average sunshine: 7h and 42min).
The months with the least sunshine are February and November (Average sunshine: 3h and 48min).
Average sunshine days in September
Long Riston, United Kingdom
- Average sunshine days in September: 16.6 days
The month with the most sunshine days is April (17.3 days).
The month with the least sunshine days is June (12.4 days).
Average UV index in September
Long Riston, 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
Long Riston, United Kingdom
- Average cloud cover in September: 50
The month with the most cloud cover is February (Cloud cover 62).
The month with the least cloud cover is April (Cloud cover 49).
Average visibility in September
Long Riston, 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).
Long Riston, United Kingdom
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