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 commencement of September introduces an average high-temperature of a still refreshing 16.5°C (61.7°F), closely mirroring the preceding month. Perranwell records a consistent average nighttime temperature of 13.9°C (57°F) in September, slightly lower than the daytime high.Humidity
The average relative humidity in September is 83%.Rainfall
In Perranwell, in September, during 14.9 rainfall days, 39mm (1.54") of precipitation is typically accumulated. Throughout the year, there are 204.6 rainfall days, and 648mm (25.51") of precipitation is accumulated.Snowfall
In Perranwell, United Kingdom, snow does not fall in March through December.Daylight
The average length of the day in September is 12h and 37min.On the first day of the month, sunrise is at 6:35 am and sunset at 8:04 pm. On the last day of September, in Perranwell, sunrise is at 7:19 am and sunset at 7:00 pm BST.
Sunshine
The average sunshine in September is 7.6h.UV index
In Perranwell, the average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for the ordinary person.Note: In September, an average UV index of 4 transforms into the following instructions:
Exercise caution. Those with pale skin may experience burns in less than half an hour. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Perranwell in September?
What is the average humidity in September in Perranwell?
How many days does it rain in September in Perranwell?
When it does not snow in Perranwell?
How many hours of daylight does Perranwell have in September?
When is the sunrise / sunset in September in Perranwell?
How many hours of sunshine does Perranwell have in September?
What is the UV index intensity in September in Perranwell?
Average temperature in September
Perranwell, United Kingdom
- Average high temperature in September: 16.5°C
The warmest month (with the highest average high temperature) is August (17.8°C).
The month with the lowest average high temperature is February (8.8°C).
- Average low temperature in September: 13.9°C
The month with the highest average low temperature is August (14.9°C).
The coldest month (with the lowest average low temperature) is February (6.7°C).
Average pressure in September
Perranwell, United Kingdom
- Average pressure in September: 1017.4mbar
The month with the highest atmospheric pressure is September (1017.4mbar).
The month with the lowest atmospheric pressure is November (1010.4mbar).
Average wind speed in September
Perranwell, United Kingdom
- Average wind speed in September: 22.4km/h
The windiest month (with the highest average wind speed) is December (30.4km/h).
The calmest month (with the lowest average wind speed) is July (19.2km/h).
Average humidity in September
Perranwell, United Kingdom
- Average humidity in September: 83%
The month with the highest relative humidity is June (85%).
The months with the lowest relative humidity are February, November and December (80%).
Average rainfall in September
Perranwell, United Kingdom
- Average rainfall in September: 39mm
The wettest month (with the highest rainfall) is November (90mm).
The driest month (with the least rainfall) is May (30mm).
Average rainfall days in September
Perranwell, United Kingdom
- Average rainfall days in September: 14.9 days
The month with the highest number of rainy days is November (21.2 days).
The month with the least rainy days is May (13.3 days).
Average snowfall in September
Perranwell, United Kingdom
- Average snowfall in September: 0mm
The month with the highest snowfall is February (5mm).
The months with the least snowfall are March, April, May, June, July, August, September, October, November and December (0mm).
Average snowfall days in September
Perranwell, United Kingdom
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (0.7 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).
Average daylight in September /
Average sunshine in September
Perranwell, 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 6min).
- Average sunshine in September: 7h and 4min
The month with the most sunshine is July (Average sunshine: 8h and 24min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).
Average sunshine days in September
Perranwell, United Kingdom
- Average sunshine days in September: 10.9 days
The month with the most sunshine days is May (14.1 days).
The month with the least sunshine days is November (5.3 days).
Average UV index in September
Perranwell, United Kingdom
- Average UV index in September: 4
The month with the highest UV index is August (UV index 5).
The month with the lowest UV index is January (UV index 2).
Average cloud cover in September
Perranwell, United Kingdom
- Average cloud cover in September: 48
The month with the most cloud cover is December (Cloud cover 62).
The month with the least cloud cover is April (Cloud cover 43).
Average visibility in September
Perranwell, United Kingdom
- Average visibility in September: 10km
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (10km).
The month with the lowest visibility is January (9km).
