September weather forecastBollmora, Sweden
September
Weather in September
September, the first month of the autumn in Bollmora, is still a refreshing month, with temperature in the range of an average low of 11.2°C (52.2°F) and an average high of 15.3°C (59.5°F).Temperature
As September begins, there is a minor decrease in the average high-temperature, softly falling from a comfortable 19°C (66.2°F) in August to a mild 15.3°C (59.5°F). Bollmora observes a consistent average low-temperature of 11.2°C (52.2°F) throughout September nights.Humidity
In Bollmora, Sweden, the average relative humidity in September is 80%.Rainfall
In September, in Bollmora, the rain falls for 8.6 days. Throughout September, 11mm (0.43") of precipitation is accumulated. Throughout the year, in Bollmora, there are 88.9 rainfall days, and 116mm (4.57") of precipitation is accumulated.Snowfall
In Bollmora, snow does not fall in June through September.Daylight
In Bollmora, the average length of the day in September is 12h and 50min.On the first day of the month, sunrise is at 05:45 and sunset at 19:48. On the last day of September, in Bollmora, sunrise is at 06:51 and sunset at 18:22 CEST.
Sunshine
In September, the average sunshine in Bollmora is 8.5h.UV index
The average daily maximum UV index in September in Bollmora is 3. A UV Index estimate of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for the ordinary person.Note: During September, 3 as the daily maximum UV index converts into the following advice:
Preventative actions are necessary - Recommendations to ward off sunburn are given. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Bollmora, Sweden
- Average high temperature in September: 15.3°C
The warmest month (with the highest average high temperature) is July (19.5°C).
The month with the lowest average high temperature is February (0.3°C).
- Average low temperature in September: 11.2°C
The month with the highest average low temperature is August (14.4°C).
The coldest months (with the lowest average low temperature) are January and February (-2.3°C).
Average pressure in September
Bollmora, Sweden
- Average pressure in September: 1013.4mbar
The month with the highest atmospheric pressure is May (1014.9mbar).
The month with the lowest atmospheric pressure is December (1007.9mbar).
Average wind speed in September
Bollmora, Sweden
- Average wind speed in September: 18.1km/h
The windiest month (with the highest average wind speed) is December (23.5km/h).
The calmest month (with the lowest average wind speed) is July (15.3km/h).
Average humidity in September
Bollmora, Sweden
- Average humidity in September: 80%
The month with the highest relative humidity is November (86%).
The month with the lowest relative humidity is May (75%).
Average rainfall in September
Bollmora, Sweden
- Average rainfall in September: 11mm
The wettest months (with the highest rainfall) are July and August (14mm).
The driest month (with the least rainfall) is April (4mm).
Average rainfall days in September
Bollmora, Sweden
- Average rainfall days in September: 8.6 days
The month with the highest number of rainy days is August (10.9 days).
The month with the least rainy days is February (4.3 days).
Average snowfall in September
Bollmora, Sweden
- Average snowfall in September: 0mm
The month with the highest snowfall is February (23mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Bollmora, Sweden
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (9.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Bollmora, Sweden
- Average daylight in September: 12h and 48min
The month with the longest days is June (Average daylight: 18h and 30min).
The month with the shortest days is December (Average daylight: 6h and 18min).
- Average sunshine in September: 8h and 30min
The month with the most sunshine is June (Average sunshine: 12h and 30min).
The month with the least sunshine is December (Average sunshine: 2h and 30min).
Average sunshine days in September
Bollmora, Sweden
- Average sunshine days in September: 17.7 days
The months with the most sunshine days are April and May (21.8 days).
The month with the least sunshine days is December (14.4 days).
Average UV index in September
Bollmora, 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 and February (UV index 1).
Average cloud cover in September
Bollmora, Sweden
- Average cloud cover in September: 40
The months with the most cloud cover are January and February (Cloud cover 65).
The month with the least cloud cover is August (Cloud cover 34).
Average visibility in September
Bollmora, 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).
