September weather forecastRälla, Sweden
September
Weather in September
The first month of the autumn, September, is still a refreshing month in Rälla, Sweden, with an average temperature ranging between min 12.1°C (53.8°F) and max 16.4°C (61.5°F).Temperature
The average high-temperature slightly decreases in September, shifting from 19.9°C (67.8°F) in August to a still refreshing 16.4°C (61.5°F). During the nights of September, the average low-temperature holds at a fresh 12.1°C (53.8°F).Humidity
In September, the average relative humidity is 77%.Rainfall
In September, the rain falls for 11.7 days. Throughout September, 24mm (0.94") of precipitation is accumulated. In Rälla, during the entire year, the rain falls for 153.3 days and collects up to 392mm (15.43") of precipitation.Snowfall
In Rälla, snow does not fall in June through October.Daylight
In September, the average length of the day is 12h and 46min.On the first day of the month, sunrise is at 05:57 and sunset at 19:49. On the last day of September, sunrise is at 06:56 and sunset at 18:30 CEST.
Sunshine
The average sunshine in September is 8.7h.UV index
In Rälla, the average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The UV index of 4 in September translates into these instructions:
Undertake precautions - Obligation exists to protect against skin and eye damage. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Opt for tightly woven and loose clothing to enhance protection from the Sun.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Rälla, Sweden
- Average high temperature in September: 16.4°C
The warmest month (with the highest average high temperature) is August (19.9°C).
The months with the lowest average high temperature are January and February (1.8°C).
- Average low temperature in September: 12.1°C
The month with the highest average low temperature is August (15.3°C).
The coldest months (with the lowest average low temperature) are January and February (-0.5°C).
Average pressure in September
Rälla, Sweden
- Average pressure in September: 1014.8mbar
The months with the highest atmospheric pressure are April and May (1015.3mbar).
The month with the lowest atmospheric pressure is December (1010.1mbar).
Average wind speed in September
Rälla, Sweden
- Average wind speed in September: 19.3km/h
The windiest month (with the highest average wind speed) is December (22.8km/h).
The calmest month (with the lowest average wind speed) is May (16.1km/h).
Average humidity in September
Rälla, Sweden
- Average humidity in September: 77%
The month with the highest relative humidity is February (85%).
The months with the lowest relative humidity are April, May and June (74%).
Average rainfall in September
Rälla, Sweden
- Average rainfall in September: 24mm
The wettest month (with the highest rainfall) is November (47mm).
The driest month (with the least rainfall) is April (14mm).
Average rainfall days in September
Rälla, Sweden
- Average rainfall days in September: 11.7 days
The month with the highest number of rainy days is November (16.5 days).
The month with the least rainy days is February (7.7 days).
Average snowfall in September
Rälla, Sweden
- Average snowfall in September: 0mm
The month with the highest snowfall is February (72mm).
The months with the least snowfall are June, July, August, September and October (0mm).
Average snowfall days in September
Rälla, Sweden
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (12.5 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
Rälla, Sweden
- Average daylight in September: 12h and 48min
The month with the longest days is June (Average daylight: 17h and 42min).
The month with the shortest days is December (Average daylight: 6h and 54min).
- Average sunshine in September: 8h and 42min
The month with the most sunshine is June (Average sunshine: 10h and 36min).
The months with the least sunshine are January and February (Average sunshine: 3h and 18min).
Average sunshine days in September
Rälla, Sweden
- Average sunshine days in September: 14.2 days
The month with the most sunshine days is May (16.4 days).
The month with the least sunshine days is November (8.7 days).
Average UV index in September
Rälla, 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
Rälla, Sweden
- Average cloud cover in September: 38
The months with the most cloud cover are January and February (Cloud cover 67).
The month with the least cloud cover is August (Cloud cover 32).
Average visibility in September
Rälla, Sweden
- Average visibility in September: 10km
The months with the highest visibility are April, May, June, July, August, September and October (10km).
The months with the lowest visibility are January, February, March, November and December (9km).
