September weather forecastHällevik, Sweden
September
Weather in September
September, the first month of the autumn in Hällevik, is still a refreshing month, with an average temperature ranging between min 13.1°C (55.6°F) and max 16.4°C (61.5°F).Temperature
The shift from August to September includes a small decrease in the average high-temperature, from an enjoyable 19.6°C (67.3°F) to a still refreshing 16.4°C (61.5°F). September notes an average low temperature of 13.1°C (55.6°F), subtly down from the daytime highs.Humidity
In Hällevik, the average relative humidity in September is 78%.Rainfall
In Hällevik, in September, during 11.9 rainfall days, 26mm (1.02") of precipitation is typically accumulated. In Hällevik, during the entire year, the rain falls for 139.4 days and collects up to 346mm (13.62") of precipitation.Snowfall
In Hällevik, snow does not fall in May through October.Daylight
The average length of the day in September is 12h and 45min.On the first day of the month, sunrise is at 06:06 and sunset at 19:55. On the last day of September, sunrise is at 07:03 and sunset at 18:38 CEST.
Sunshine
In Hällevik, the average sunshine in September is 8.3h.UV index
In Hällevik, the average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.Note: In September, an average UV index of 4 transforms into the following instructions:
Be mindful. Those with pale skin might receive burns in fewer than 30 minutes. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during 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
Average temperature in September
Hällevik, Sweden
- Average high temperature in September: 16.4°C
The warmest month (with the highest average high temperature) is August (19.6°C).
The month with the lowest average high temperature is February (2.4°C).
- Average low temperature in September: 13.1°C
The month with the highest average low temperature is August (16.1°C).
The coldest month (with the lowest average low temperature) is February (0.1°C).
Average pressure in September
Hällevik, Sweden
- Average pressure in September: 1015.3mbar
The month with the highest atmospheric pressure is April (1015.6mbar).
The month with the lowest atmospheric pressure is December (1010.9mbar).
Average wind speed in September
Hällevik, Sweden
- Average wind speed in September: 21.9km/h
The windiest month (with the highest average wind speed) is December (25.6km/h).
The calmest month (with the lowest average wind speed) is June (18.3km/h).
Average humidity in September
Hällevik, Sweden
- Average humidity in September: 78%
The month with the highest relative humidity is February (85%).
The months with the lowest relative humidity are April, May and June (76%).
Average rainfall in September
Hällevik, Sweden
- Average rainfall in September: 26mm
The wettest month (with the highest rainfall) is July (42mm).
The driest month (with the least rainfall) is April (14mm).
Average rainfall days in September
Hällevik, Sweden
- Average rainfall days in September: 11.9 days
The month with the highest number of rainy days is November (15.2 days).
The month with the least rainy days is February (7.3 days).
Average snowfall in September
Hällevik, Sweden
- Average snowfall in September: 0mm
The month with the highest snowfall is February (44mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in September
Hällevik, Sweden
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (9.1 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Hällevik, Sweden
- Average daylight in September: 12h and 42min
The month with the longest days is June (Average daylight: 17h and 30min).
The month with the shortest days is December (Average daylight: 7h and 6min).
- Average sunshine in September: 8h and 18min
The months with the most sunshine are June and August (Average sunshine: 10h and 0min).
The month with the least sunshine is December (Average sunshine: 3h and 6min).
Average sunshine days in September
Hällevik, Sweden
- Average sunshine days in September: 15.3 days
The month with the most sunshine days is April (18.6 days).
The month with the least sunshine days is December (9.8 days).
Average UV index in September
Hällevik, Sweden
- Average UV index in September: 4
The months with the highest UV index are June and July (UV index 5).
The month with the lowest UV index is January (UV index 1).
Average cloud cover in September
Hällevik, Sweden
- Average cloud cover in September: 42
The month with the most cloud cover is December (Cloud cover 69).
The month with the least cloud cover is August (Cloud cover 34).
Average visibility in September
Hällevik, 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).
