September weather forecastUpper Killay, United Kingdom
September
Weather in September
The first month of the autumn, September, is still a comfortable month in Upper Killay, United Kingdom, with an average temperature varying between 16.5°C (61.7°F) and 12.6°C (54.7°F).Temperature
With the onset of September, a modest change to a still enjoyable 16.5°C (61.7°F) from August's 17.6°C (63.7°F) is noted in high-temperature. During the nights of September, Upper Killay records an average low-temperature of 12.6°C (54.7°F), reflecting a modest decrease from daytime highs.Humidity
In Upper Killay, the average relative humidity in September is 83%.Rainfall
In September, in Upper Killay, the rain falls for 17 days. Throughout September, 55mm (2.17") of precipitation is accumulated. Throughout the year, in Upper Killay, there are 210.8 rainfall days, and 785mm (30.91") of precipitation is accumulated.Snowfall
April through November are months without snowfall in Upper Killay.Daylight
The average length of the day in September in Upper Killay is 12h and 38min.On the first day of the month, sunrise is at 6:29 am and sunset at 8:02 pm. On the last day of September, sunrise is at 7:16 am and sunset at 6:55 pm BST.
Sunshine
In September, the average sunshine is 7h.UV index
The months with the highest UV index are May through September, with an average maximum UV index of 4. A UV Index reading of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for the average person.Note: A maximum high daily UV index of 4 during September translates into the following directions:
Ensure safety - Imperative it is to shield skin and eyes from damage. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. Tightly woven clothing, when worn loosely, shields effectively against the Sun.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Upper Killay, United Kingdom
- Average high temperature in September: 16.5°C
The warmest month (with the highest average high temperature) is July (17.8°C).
The month with the lowest average high temperature is February (7.8°C).
- Average low temperature in September: 12.6°C
The month with the highest average low temperature is August (14.1°C).
The coldest month (with the lowest average low temperature) is February (5°C).
Average pressure in September
Upper Killay, 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 (1009.8mbar).
Average wind speed in September
Upper Killay, United Kingdom
- Average wind speed in September: 19.2km/h
The windiest month (with the highest average wind speed) is December (25.7km/h).
The calmest month (with the lowest average wind speed) is June (16.4km/h).
Average humidity in September
Upper Killay, United Kingdom
- Average humidity in September: 83%
The months with the highest relative humidity are January, August and December (84%).
The month with the lowest relative humidity is April (80%).
Average rainfall in September
Upper Killay, United Kingdom
- Average rainfall in September: 55mm
The wettest month (with the highest rainfall) is December (101mm).
The driest month (with the least rainfall) is May (37mm).
Average rainfall days in September
Upper Killay, United Kingdom
- Average rainfall days in September: 17 days
The month with the highest number of rainy days is December (21.3 days).
The month with the least rainy days is April (14.4 days).
Average snowfall in September
Upper Killay, United Kingdom
- Average snowfall in September: 0mm
The month with the highest snowfall is December (8mm).
The months with the least snowfall are April, May, June, July, August, September, October and November (0mm).
Average snowfall days in September
Upper Killay, United Kingdom
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is December (1.1 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Upper Killay, United Kingdom
- Average daylight in September: 12h and 36min
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 0min
The months with the most sunshine are April and May (Average sunshine: 8h and 18min).
The month with the least sunshine is December (Average sunshine: 3h and 36min).
Average sunshine days in September
Upper Killay, United Kingdom
- Average sunshine days in September: 10.4 days
The month with the most sunshine days is May (13 days).
The month with the least sunshine days is December (6.7 days).
Average UV index in September
Upper Killay, 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 and December (UV index 2).
Average cloud cover in September
Upper Killay, United Kingdom
- Average cloud cover in September: 50
The month with the most cloud cover is December (Cloud cover 63).
The months with the least cloud cover are April and May (Cloud cover 45).
Average visibility in September
Upper Killay, United Kingdom
- Average visibility in September: 9km
The months with the highest visibility are March, April, June, July and October (10km).
The months with the lowest visibility are January, February, May, August, September, November and December (9km).
