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
As August transitions into September, Rumia sees a gentle drop in the average high-temperature, transitioning from a pleasant 21.7°C (71.1°F) to a refreshing 17.4°C (63.3°F). During September, Rumia's temperature averages to a cool 12°C (53.6°F) at night.Humidity
The average relative humidity in September in Rumia, Poland, is 75%.Rainfall
In September, in Rumia, the rain falls for 13.3 days. Throughout September, 31mm (1.22") of precipitation is 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, Poland, 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, in Rumia, sunrise is at 06:47 and sunset at 18:24 CEST.
Sunshine
The average sunshine in September is 8.1h.UV index
In September, the average daily maximum UV index is 4. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.Note: The daily maximum UV index of 4 in September interprets into the following advice:
Adopt protective measures - Suggestions to resist sunburn are offered. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
Frequently asked questions
What are September temperatures in Rumia?
What is the average humidity in September in Rumia?
How much does it rain in Rumia in September?
When it does not snow in Rumia?
Does it snow in Rumia in September?
How many hours of daylight does Rumia have in September?
When are sunrise and sunset in September in Rumia?
How long on average sun shines in September in Rumia?
What is the UV index reading in September in Rumia?
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
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