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 shift into September records an average high-temperature of a still enjoyable 16.5°C (61.7°F), subtly varied from August's 17.8°C (64°F). The nights of September anticipate a slight dip from daytime high temperatures, settling to an average low-temperature of 13.9°C (57°F).Humidity
The average relative humidity in September in Grampound is 83%.Rainfall
In Grampound, in September, it is raining for 14.9 days, with typically 39mm (1.54") of accumulated precipitation. In Grampound, during the entire year, the rain falls for 204.6 days and collects up to 648mm (25.51") of precipitation.Snowfall
In Grampound, snow does not fall in March through December.Daylight
In Grampound, the average length of the day in September is 12h and 37min.On the first day of September in Grampound, sunrise is at 6:35 am and sunset at 8:03 pm. On the last day of the month, sunrise is at 7:19 am and sunset at 6:59 pm BST.
Sunshine
In Grampound, the average sunshine in September is 7.6h.UV index
In Grampound, the average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.Note: An average UV index of 4 in September transforms into this advice:
Ensure safety - Recommendations to avert sunburn are presented. To protect against the Sun's most potent rays, avoid direct exposure around midday. Employ a wide-brim hat for potent defense against up to 50% of UV rays.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Grampound in September?
What is the average humidity in September in Grampound?
How much does it rain in Grampound in September?
When it does not snow in Grampound?
What is the average length of the day in September in Grampound?
When are sunrise and sunset in September in Grampound?
How long on average sun shines in September in Grampound?
What is the UV index reading in September in Grampound?
Average temperature in September
Grampound, 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
Grampound, 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
Grampound, 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
Grampound, 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
Grampound, 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
Grampound, 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
Grampound, 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
Grampound, 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
Grampound, United Kingdom
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 16h and 18min).
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
Grampound, 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
Grampound, 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
Grampound, 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
Grampound, 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).
