September weather forecastBømlo, Norway
September
Weather in September
The first month of the autumn, September, is still a refreshing month in Bømlo, Norway, with an average temperature fluctuating between 11.2°C (52.2°F) and 14.3°C (57.7°F).Temperature
Bømlo, Norway, notes an average high-temperature of a moderate 14.3°C (57.7°F) in September, hardly diverging from August. Bømlo's nighttime temperature in September consistently rests at a fresh 11.2°C (52.2°F).Humidity
The average relative humidity in September in Bømlo is 79%.Rainfall
In Bømlo, during September, the rain falls for 20.7 days and regularly aggregates up to 150mm (5.91") of precipitation. In Bømlo, during the entire year, the rain falls for 218 days and collects up to 1453mm (57.2") of precipitation.Snowfall
In Bømlo, snow does not fall in June through September.Daylight
In Bømlo, the average length of the day in September is 12h and 51min.On the first day of the month, sunrise is at 06:36 and sunset at 20:41. On the last day of September, in Bømlo, sunrise is at 07:43 and sunset at 19:14 CEST.
Sunshine
In September, the average sunshine in Bømlo is 5.9h.UV index
In September, the average daily maximum UV index in Bømlo is 3. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for ordinary individuals.Note: A maximum UV index of 3 in September translates into the following recommendations:
Take precautions - Protection against sunburn is recommended. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Bømlo, Norway
- Average high temperature in September: 14.3°C
The warmest month (with the highest average high temperature) is August (16.7°C).
The months with the lowest average high temperature are January and February (3.4°C).
- Average low temperature in September: 11.2°C
The month with the highest average low temperature is August (13.3°C).
The coldest month (with the lowest average low temperature) is February (0.8°C).
Average pressure in September
Bømlo, Norway
- Average pressure in September: 1012.2mbar
The month with the highest atmospheric pressure is May (1014.9mbar).
The month with the lowest atmospheric pressure is December (1006.2mbar).
Average wind speed in September
Bømlo, Norway
- Average wind speed in September: 16.4km/h
The windiest month (with the highest average wind speed) is January (21.3km/h).
The calmest months (with the lowest average wind speed) are June and July (13.9km/h).
Average humidity in September
Bømlo, Norway
- Average humidity in September: 79%
The month with the highest relative humidity is March (80%).
The month with the lowest relative humidity is May (74%).
Average rainfall in September
Bømlo, Norway
- Average rainfall in September: 150mm
The wettest month (with the highest rainfall) is December (189mm).
The driest month (with the least rainfall) is April (65mm).
Average rainfall days in September
Bømlo, Norway
- Average rainfall days in September: 20.7 days
The month with the highest number of rainy days is December (21.9 days).
The month with the least rainy days is June (14.5 days).
Average snowfall in September
Bømlo, Norway
- Average snowfall in September: 0mm
The month with the highest snowfall is January (101mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Bømlo, Norway
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (7.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Bømlo, Norway
- Average daylight in September: 12h and 54min
The month with the longest days is June (Average daylight: 18h and 36min).
The month with the shortest days is December (Average daylight: 6h and 6min).
- Average sunshine in September: 5h and 54min
The month with the most sunshine is June (Average sunshine: 9h and 36min).
The month with the least sunshine is December (Average sunshine: 2h and 18min).
Average sunshine days in September
Bømlo, Norway
- Average sunshine days in September: 8 days
The month with the most sunshine days is June (14.6 days).
The month with the least sunshine days is December (6.2 days).
Average UV index in September
Bømlo, Norway
- Average UV index in September: 3
The months with the highest UV index are May, June, July and August (UV index 4).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in September
Bømlo, Norway
- Average cloud cover in September: 58
The month with the most cloud cover is December (Cloud cover 67).
The month with the least cloud cover is May (Cloud cover 47).
Average visibility in September
Bømlo, Norway
- Average visibility in September: 9km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
