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 transition into September subtly indicates a reduction in the average high-temperature, down to a pleasant 21.8°C (71.2°F) from August's moderately hot 26.6°C (79.9°F). Grisel experiences an average temperature drop to a fresh 10.4°C (50.7°F) during September nights.Humidity
In Grisel, the average relative humidity in September is 62%.Rainfall
In Grisel, Spain, in September, it is raining for 10.2 days, with typically 28mm (1.1") of accumulated precipitation. In Grisel, during the entire year, the rain falls for 124.1 days and collects up to 386mm (15.2") of precipitation.Snowfall
In Grisel, snow does not fall in June through October.Daylight
In Grisel, Spain, the average length of the day in September is 12h and 29min.On the first day of September, sunrise is at 07:33 and sunset at 20:40. On the last day of the month, sunrise is at 08:03 and sunset at 19:50 CEST.
Sunshine
In September, the average sunshine in Grisel, Spain, is 9.5h.UV index
In Grisel, the average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for ordinary individuals.Note: The maximum UV index of 4 during September translates into these guidelines:
Be vigilant - Suggestions to stave off sun damage are provided. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Grisel in September?
What is the average humidity in September in Grisel?
How many days does it rain in September in Grisel?
When it does not snow in Grisel?
What is the average length of the day in September in Grisel?
When is the sunrise / sunset in September in Grisel?
How many hours of sunshine does Grisel have in September?
What is the UV index reading in September in Grisel?
Average temperature in September
Grisel, Spain
- Average high temperature in September: 21.8°C
The warmest month (with the highest average high temperature) is August (26.6°C).
The month with the lowest average high temperature is January (6°C).
- Average low temperature in September: 10.4°C
The month with the highest average low temperature is August (13.5°C).
The coldest months (with the lowest average low temperature) are January and February (-0.5°C).
Average pressure in September
Grisel, Spain
- Average pressure in September: 1018mbar
The month with the highest atmospheric pressure is December (1022.9mbar).
The month with the lowest atmospheric pressure is April (1015.2mbar).
Average wind speed in September
Grisel, Spain
- Average wind speed in September: 9.2km/h
The windiest month (with the highest average wind speed) is February (16.3km/h).
The calmest months (with the lowest average wind speed) are July, August and September (9.2km/h).
Average humidity in September
Grisel, Spain
- Average humidity in September: 62%
The month with the highest relative humidity is January (81%).
The month with the lowest relative humidity is August (55%).
Average rainfall in September
Grisel, Spain
- Average rainfall in September: 28mm
The wettest month (with the highest rainfall) is June (53mm).
The driest month (with the least rainfall) is December (16mm).
Average rainfall days in September
Grisel, Spain
- Average rainfall days in September: 10.2 days
The month with the highest number of rainy days is April (15.9 days).
The month with the least rainy days is February (5.8 days).
Average snowfall in September
Grisel, Spain
- Average snowfall in September: 0mm
The month with the highest snowfall is January (78mm).
The months with the least snowfall are June, July, August, September and October (0mm).
Average snowfall days in September
Grisel, Spain
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (6.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Grisel, Spain
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in September: 9h and 3min
The month with the most sunshine is July (Average sunshine: 11h and 30min).
The month with the least sunshine is December (Average sunshine: 6h and 0min).
Average sunshine days in September
Grisel, Spain
- Average sunshine days in September: 17.4 days
The month with the most sunshine days is December (22.4 days).
The month with the least sunshine days is April (11.2 days).
Average UV index in September
Grisel, Spain
- Average UV index in September: 4
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Grisel, Spain
- Average cloud cover in September: 22
The month with the most cloud cover is January (Cloud cover 46).
The month with the least cloud cover is August (Cloud cover 16).
Average visibility in September
Grisel, Spain
- Average visibility in September: 10km
The months with the highest visibility are June, July, August and September (10km).
The months with the lowest visibility are January, February, March, April, May, October, November and December (9km).
