September weather forecastGrandham, France
September
Weather in September
September, the first month of the autumn in Grandham, is also an agreeable month, with temperature in the range of an average low of 11.3°C (52.3°F) and an average high of 20.5°C (68.9°F).Temperature
As September commences, the average high-temperature subtly reduces, transitioning from a moderately hot 24.4°C (75.9°F) in August to an agreeable 20.5°C (68.9°F). Grandham's nights in September cool down to an average low-temperature of 11.3°C (52.3°F).Humidity
In September, the average relative humidity is 75%.Rainfall
September is the month with the least rainfall in Grandham. Rain falls for 10.9 days and accumulates 30mm (1.18") of precipitation.Snowfall
April through October are months without snowfall.Daylight
In Grandham, the average length of the day in September is 12h and 36min.On the first day of the month, sunrise is at 06:57 and sunset at 20:23. On the last day of September, sunrise is at 07:39 and sunset at 19:21 CEST.
Sunshine
In September, the average sunshine in Grandham is 7.9h.UV index
In September, the average daily maximum UV index in Grandham is 4. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for ordinary individuals.Note: In September, an average UV index of 4 transforms into the following instructions:
Make use of precautions - It is urged to ward off sun damage. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. During bright days, sunglasses that offer UVA and UVB defense are recommended.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Grandham, France
- Average high temperature in September: 20.5°C
The warmest month (with the highest average high temperature) is August (24.4°C).
The month with the lowest average high temperature is January (5.1°C).
- Average low temperature in September: 11.3°C
The month with the highest average low temperature is August (14.5°C).
The coldest month (with the lowest average low temperature) is January (0.7°C).
Average pressure in September
Grandham, France
- Average pressure in September: 1018mbar
The month with the highest atmospheric pressure is December (1018.6mbar).
The month with the lowest atmospheric pressure is November (1013.9mbar).
Average wind speed in September
Grandham, France
- Average wind speed in September: 9.8km/h
The windiest months (with the highest average wind speed) are February and December (14km/h).
The calmest month (with the lowest average wind speed) is August (9.4km/h).
Average humidity in September
Grandham, France
- Average humidity in September: 75%
The month with the highest relative humidity is December (89%).
The month with the lowest relative humidity is August (71%).
Average rainfall in September
Grandham, France
- Average rainfall in September: 30mm
The wettest month (with the highest rainfall) is December (69mm).
The driest month (with the least rainfall) is September (30mm).
Average rainfall days in September
Grandham, France
- Average rainfall days in September: 10.9 days
The month with the highest number of rainy days is May (18.8 days).
The month with the least rainy days is September (10.9 days).
Average snowfall in September
Grandham, France
- Average snowfall in September: 0mm
The month with the highest snowfall is January (37mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in September
Grandham, France
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (4 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
Grandham, France
- Average daylight in September: 12h and 36min
The month with the longest days is June (Average daylight: 16h and 12min).
The month with the shortest days is December (Average daylight: 8h and 18min).
- Average sunshine in September: 7h and 54min
The month with the most sunshine is August (Average sunshine: 9h and 30min).
The month with the least sunshine is December (Average sunshine: 3h and 36min).
Average sunshine days in September
Grandham, France
- Average sunshine days in September: 16.4 days
The month with the most sunshine days is September (16.4 days).
The month with the least sunshine days is December (8.7 days).
Average UV index in September
Grandham, France
- Average UV index in September: 4
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Grandham, France
- Average cloud cover in September: 38
The month with the most cloud cover is December (Cloud cover 64).
The months with the least cloud cover are August and September (Cloud cover 38).
Average visibility in September
Grandham, France
- Average visibility in September: 9km
The months with the highest visibility are March, April, July, August and September (9km).
The months with the lowest visibility are January, February, May, June, October, November and December (8km).
