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
As Grundsund, Sweden, steps into September, the average high-temperature is measured at a moderate 15.2°C (59.4°F), displaying minor differences from August's 18°C (64.4°F). Grundsund sustains a near constant temperature throughout September, with nighttime averages of 12.8°C (55°F).Humidity
In Grundsund, Sweden, the average relative humidity in September is 78%.Rainfall
In Grundsund, in September, it is raining for 16.5 days, with typically 53mm (2.09") of accumulated precipitation. Throughout the year, there are 173.9 rainfall days, and 551mm (21.69") of precipitation is accumulated.Snowfall
June through October are months without snowfall.Daylight
In Grundsund, the average length of the day in September is 12h and 49min.On the first day of the month, sunrise is at 06:15 and sunset at 20:13. On the last day of September, in Grundsund, Sweden, sunrise is at 07:17 and sunset at 18:50 CEST.
Sunshine
In September, the average sunshine in Grundsund, Sweden, is 8.1h.UV index
The average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for the ordinary person.Note: The maximum UV index, 4 during September, leads to the following recommendations:
Proceed with care. Light skin individuals may be exposed to burns in fewer than 30 minutes. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature in Grundsund?
What is the average humidity in September in Grundsund?
How much does it rain in Grundsund in September?
When it does not snow in Grundsund?
How many hours of daylight does Grundsund have in September?
When are sunrise and sunset in September in Grundsund?
How long on average sun shines in September in Grundsund?
How high is the UV index in September in Grundsund?
Average temperature in September
Grundsund, Sweden
- Average high temperature in September: 15.2°C
The warmest month (with the highest average high temperature) is July (18.2°C).
The month with the lowest average high temperature is February (1.8°C).
- Average low temperature in September: 12.8°C
The month with the highest average low temperature is August (15.3°C).
The coldest month (with the lowest average low temperature) is February (-0.2°C).
Average pressure in September
Grundsund, Sweden
- Average pressure in September: 1013.4mbar
The month with the highest atmospheric pressure is April (1014.5mbar).
The month with the lowest atmospheric pressure is December (1008.4mbar).
Average wind speed in September
Grundsund, Sweden
- Average wind speed in September: 23.6km/h
The windiest month (with the highest average wind speed) is December (27.6km/h).
The calmest month (with the lowest average wind speed) is June (19.1km/h).
Average humidity in September
Grundsund, Sweden
- Average humidity in September: 78%
The month with the highest relative humidity is February (85%).
The month with the lowest relative humidity is May (75%).
Average rainfall in September
Grundsund, Sweden
- Average rainfall in September: 53mm
The wettest month (with the highest rainfall) is August (72mm).
The driest month (with the least rainfall) is April (22mm).
Average rainfall days in September
Grundsund, Sweden
- Average rainfall days in September: 16.5 days
The month with the highest number of rainy days is August (18.6 days).
The month with the least rainy days is February (9.9 days).
Average snowfall in September
Grundsund, Sweden
- Average snowfall in September: 0mm
The months with the highest snowfall are January and February (30mm).
The months with the least snowfall are June, July, August, September and October (0mm).
Average snowfall days in September
Grundsund, Sweden
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (6.9 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Grundsund, Sweden
- Average daylight in September: 12h and 5min
The month with the longest days is June (Average daylight: 18h and 6min).
The month with the shortest days is December (Average daylight: 6h and 30min).
- Average sunshine in September: 8h and 1min
The month with the most sunshine is June (Average sunshine: 11h and 24min).
The month with the least sunshine is December (Average sunshine: 3h and 30min).
Average sunshine days in September
Grundsund, Sweden
- Average sunshine days in September: 11.5 days
The month with the most sunshine days is April (16.9 days).
The months with the least sunshine days are November and December (10.3 days).
Average UV index in September
Grundsund, Sweden
- Average UV index in September: 4
The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in September
Grundsund, Sweden
- Average cloud cover in September: 44
The months with the most cloud cover are February and November (Cloud cover 62).
The months with the least cloud cover are June and July (Cloud cover 36).
Average visibility in September
Grundsund, Sweden
- Average visibility in September: 10km
The months with the highest visibility are March, April, May, June, July, August, September and October (10km).
The months with the lowest visibility are January, February, November and December (9km).
