September weather forecastHolmsund, Sweden
September
Weather in September
September, the first month of the autumn in Holmsund, is still a mild month, with an average temperature varying between 13.3°C (55.9°F) and 8.4°C (47.1°F).Temperature
September sees a slight reduction in average high-temperature, with a shift from an enjoyable 17.4°C (63.3°F) in August to a still refreshing 13.3°C (55.9°F). Holmsund experiences a steady nighttime temperature of 8.4°C (47.1°F) throughout the month of September.Humidity
The average relative humidity in September is 80%.Rainfall
In Holmsund, in September, during 13.7 rainfall days, 33mm (1.3") of precipitation is typically accumulated. Throughout the year, there are 126.6 rainfall days, and 418mm (16.46") of precipitation is accumulated.Snowfall
June through September are months without snowfall in Holmsund.Sea temperature
In Holmsund, Sweden, in September, the average water temperature is 13.2°C (55.8°F).Note: Swimming in 13.2°C (55.8°F) is considered life-threatening. Even a few minutes in 13°C (55.4°F) water is uncomfortable, and swimming below 10°C (50°F) may cause total loss of breathing control and cold shock, depending on a person's physique.
Daylight
The average length of the day in September in Holmsund is 13h and 0min.On the first day of September, sunrise is at 05:24 and sunset at 19:52. On the last day of the month, sunrise is at 06:45 and sunset at 18:11 CEST.
Sunshine
In September, the average sunshine is 7.7h.UV index
The average daily maximum UV index in September in Holmsund is 3. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for ordinary individuals.Note: In September, the maximum UV index of 3 suggests this advice:
Adopt protective measures - It is advised to guard against sun damage. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. Enhance your sun protection with tightly woven, yet airy clothing.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Holmsund, Sweden
- Average high temperature in September: 13.3°C
The warmest month (with the highest average high temperature) is July (18.4°C).
The months with the lowest average high temperature are January and February (-3.5°C).
- Average low temperature in September: 8.4°C
The month with the highest average low temperature is July (12.4°C).
The coldest month (with the lowest average low temperature) is February (-7.6°C).
Average pressure in September
Holmsund, Sweden
- Average pressure in September: 1011.5mbar
The month with the highest atmospheric pressure is May (1014.2mbar).
The month with the lowest atmospheric pressure is December (1005.3mbar).
Average wind speed in September
Holmsund, Sweden
- Average wind speed in September: 14.9km/h
The windiest month (with the highest average wind speed) is December (17.8km/h).
The calmest month (with the lowest average wind speed) is July (13km/h).
Average humidity in September
Holmsund, Sweden
- Average humidity in September: 80%
The month with the highest relative humidity is February (91%).
The month with the lowest relative humidity is June (70%).
Average rainfall in September
Holmsund, Sweden
- Average rainfall in September: 33mm
The wettest month (with the highest rainfall) is December (46mm).
The driest month (with the least rainfall) is April (22mm).
Average rainfall days in September
Holmsund, Sweden
- Average rainfall days in September: 13.7 days
The months with the highest number of rainy days are July and August (14 days).
The month with the least rainy days is February (4.2 days).
Average snowfall in September
Holmsund, Sweden
- Average snowfall in September: 0mm
The month with the highest snowfall is March (199mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Holmsund, Sweden
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (17.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average sea temperature in September
Holmsund, Sweden
- Average sea temperature in September: 13.2°C
The best month for swimming (with the highest average sea temperature) is August (16.8°C).
The coldest months (with the lowest average sea temperature) are February and March (-0.2°C).
Average daylight in September /
Average sunshine in September
Holmsund, Sweden
- Average daylight in September: 13h and 0min
The month with the longest days is June (Average daylight: 20h and 30min).
The month with the shortest days is December (Average daylight: 4h and 36min).
- Average sunshine in September: 7h and 42min
The month with the most sunshine is June (Average sunshine: 13h and 0min).
The month with the least sunshine is December (Average sunshine: 1h and 30min).
Average sunshine days in September
Holmsund, Sweden
- Average sunshine days in September: 13.6 days
The month with the most sunshine days is June (15.7 days).
The month with the least sunshine days is November (10.1 days).
Average UV index in September
Holmsund, Sweden
- Average UV index in September: 3
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 1).
Average cloud cover in September
Holmsund, Sweden
- Average cloud cover in September: 45
The month with the most cloud cover is January (Cloud cover 66).
The months with the least cloud cover are July and August (Cloud cover 38).
Average visibility in September
Holmsund, Sweden
- Average visibility in September: 9km
The months with the highest visibility are June, July and August (10km).
The months with the lowest visibility are January, February and March (8km).
