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
September
Weather in September
Temperature
The average high-temperature during September registers at a still enjoyable 16.8°C (62.2°F), maintaining a close resemblance to the previous month. Instow anticipates an average minimum temperature of 11.6°C (52.9°F) in the month of September.Humidity
In Instow, the average relative humidity in September is 84%.Rainfall
In Instow, during September, the rain falls for 15.3 days and regularly aggregates up to 42mm (1.65") of precipitation. In Instow, during the entire year, the rain falls for 202.7 days and collects up to 609mm (23.98") of precipitation.Snowfall
March through November are months without snowfall.Daylight
The average length of the day in September is 12h and 38min.On the first day of September, sunrise is at 6:31 am and sunset at 8:02 pm. On the last day of the month, sunrise is at 7:16 am and sunset at 6:56 pm BST.
Sunshine
In September, the average sunshine is 7.1h.UV index
May through September, with an average maximum UV index of 4, are months with the highest UV index. A UV Index value of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for the average person.Note: The maximum daily UV index, 4 in September, converts into the following recommendations:
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. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in September?
What is the average humidity in September?
How many days does it rain in September?
When it does not snow?
What is the average length of the day in September?
When is the sunrise / sunset in September?
How long on average sun shines in September?
What are the months with the highest UV index?
What is the UV index reading in September in Instow?
Average temperature in September
Instow, United Kingdom
- Average high temperature in September: 16.8°C
The warmest month (with the highest average high temperature) is July (18.6°C).
The months with the lowest average high temperature are January and February (8°C).
- Average low temperature in September: 11.6°C
The month with the highest average low temperature is August (13.4°C).
The coldest month (with the lowest average low temperature) is February (4.6°C).
Average pressure in September
Instow, United Kingdom
- Average pressure in September: 1017mbar
The month with the highest atmospheric pressure is September (1017mbar).
The month with the lowest atmospheric pressure is November (1010mbar).
Average wind speed in September
Instow, United Kingdom
- Average wind speed in September: 18.3km/h
The windiest month (with the highest average wind speed) is December (25.2km/h).
The calmest months (with the lowest average wind speed) are June and July (16.4km/h).
Average humidity in September
Instow, United Kingdom
- Average humidity in September: 84%
The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is April (81%).
Average rainfall in September
Instow, United Kingdom
- Average rainfall in September: 42mm
The wettest month (with the highest rainfall) is December (79mm).
The driest month (with the least rainfall) is May (27mm).
Average rainfall days in September
Instow, United Kingdom
- Average rainfall days in September: 15.3 days
The month with the highest number of rainy days is November (20.6 days).
The month with the least rainy days is May (13.6 days).
Average snowfall in September
Instow, United Kingdom
- Average snowfall in September: 0mm
The months with the highest snowfall are February and December (7mm).
The months with the least snowfall are March, April, May, June, July, August, September, October and November (0mm).
Average snowfall days in September
Instow, United Kingdom
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (0.9 days).
The months with the least snowfall days are March, April, May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Instow, United Kingdom
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 16h and 30min).
The month with the shortest days is December (Average daylight: 8h and 0min).
- Average sunshine in September: 7h and 1min
The month with the most sunshine is May (Average sunshine: 8h and 12min).
The month with the least sunshine is November (Average sunshine: 3h and 42min).
Average sunshine days in September
Instow, United Kingdom
- Average sunshine days in September: 10.9 days
The month with the most sunshine days is May (14.9 days).
The month with the least sunshine days is November (6.5 days).
Average UV index in September
Instow, 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, March, November and December (UV index 2).
Average cloud cover in September
Instow, United Kingdom
- Average cloud cover in September: 51
The month with the most cloud cover is November (Cloud cover 63).
The months with the least cloud cover are April and May (Cloud cover 46).
Average visibility in September
Instow, United Kingdom
- Average visibility in September: 9km
The month with the highest visibility is February (10km).
The months with the lowest visibility are January, March, April, May, June, July, August, September, October, November and December (9km).
