Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
September signals a slight drop in average high-temperature, sliding from August's pleasant 21.7°C (71.1°F) to a comfortable 17.4°C (63.3°F). In Rumia, an average temperature of 12°C (53.6°F) is noted during September nights.Humidity
In Rumia, the average relative humidity in September is 75%.Rainfall
In Rumia, in September, during 13.3 rainfall days, 31mm (1.22") of precipitation is typically accumulated. In Rumia, during the entire year, the rain falls for 150.7 days and collects up to 391mm (15.39") of precipitation.Snowfall
June through September are months without snowfall.Daylight
In Rumia, the average length of the day in September is 12h and 43min.On the first day of the month, sunrise is at 05:54 and sunset at 19:37. On the last day of September, sunrise is at 06:47 and sunset at 18:24 CEST.
Sunshine
In September, the average sunshine is 8.1h.UV index
The average daily maximum UV index in September in Rumia is 4. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for the ordinary person.Note: An average maximum UV index of 4 in September leads to these recommendations:
Make use of precautions - Shielding skin and eyes from injury is a requirement. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. A hat with a broad brim is indispensable, filtering out up to half of UV rays.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September?
What is the average humidity in September?
How much does it rain in September?
When it does not snow?
Does it snow in September?
How many hours of daylight does Rumia have in September?
When are sunrise and sunset in September?
How many hours of sunshine does Rumia have in September?
What is the UV index intensity in September?
Average temperature in September
Rumia, Poland
- Average high temperature in September: 17.4°C
The warmest month (with the highest average high temperature) is August (21.7°C).
The month with the lowest average high temperature is January (0.8°C).
- Average low temperature in September: 12°C
The month with the highest average low temperature is August (14.8°C).
The coldest month (with the lowest average low temperature) is January (-1.7°C).
Average pressure in September
Rumia, Poland
- Average pressure in September: 1016.2mbar
The month with the highest atmospheric pressure is October (1016.5mbar).
The month with the lowest atmospheric pressure is December (1012.9mbar).
Average wind speed in September
Rumia, Poland
- Average wind speed in September: 15.6km/h
The windiest month (with the highest average wind speed) is December (19.2km/h).
The calmest months (with the lowest average wind speed) are June and August (13.5km/h).
Average humidity in September
Rumia, Poland
- Average humidity in September: 75%
The months with the highest relative humidity are January, February and December (86%).
The month with the lowest relative humidity is April (72%).
Average rainfall in September
Rumia, Poland
- Average rainfall in September: 31mm
The wettest month (with the highest rainfall) is July (56mm).
The driest month (with the least rainfall) is April (15mm).
Average rainfall days in September
Rumia, Poland
- Average rainfall days in September: 13.3 days
The month with the highest number of rainy days is July (17.5 days).
The months with the least rainy days are January and February (8.2 days).
Average snowfall in September
Rumia, Poland
- Average snowfall in September: 0mm
The month with the highest snowfall is January (64mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Rumia, Poland
- Average snowfall days in September: 0 days
The months with the highest number of snowfall days are January and February (9.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Rumia, Poland
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 17h and 12min).
The month with the shortest days is December (Average daylight: 7h and 24min).
- Average sunshine in September: 8h and 1min
The month with the most sunshine is August (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 2h and 54min).
Average sunshine days in September
Rumia, Poland
- Average sunshine days in September: 13.6 days
The month with the most sunshine days is April (17.1 days).
The month with the least sunshine days is December (10.8 days).
Average UV index in September
Rumia, Poland
- Average UV index in September: 4
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, November and December (UV index 1).
Average cloud cover in September
Rumia, Poland
- Average cloud cover in September: 41
The month with the most cloud cover is January (Cloud cover 72).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in September
Rumia, Poland
- Average visibility in September: 10km
The months with the highest visibility are April, June, July, August, September and October (10km).
The months with the lowest visibility are January, February, March, May, November and December (9km).
Rumia, Poland
Weather forecast for your location
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