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
In the transition to September, Stwolno observes a drop in the average high-temperature, moving from a moderately hot 25.3°C (77.5°F) in August to a refreshing 19.6°C (67.3°F). During the nights in September, Stwolno experiences a consistent average temperature of 11.4°C (52.5°F).Humidity
In Stwolno, the average relative humidity in September is 71%.Rainfall
The month with the least rainfall in Stwolno is September, when the rain falls for 7.9 days and typically collects 17mm (0.67") of precipitation.Snowfall
In Stwolno, snow does not fall in June through September.Daylight
The average length of the day in September is 12h and 38min.On the first day of September, sunrise is at 06:05 and sunset at 19:38. On the last day of the month, sunrise is at 06:52 and sunset at 18:31 CEST.
Sunshine
The average sunshine in September is 8.6h.UV index
The average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for the average person.Note: In September, the maximum UV index of 4 suggests these recommendations:
Guard yourself - Precautionary measures against sun damage are advocated. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly.
Frequently asked questions
What are the temperatures in Stwolno in September?
What is the average humidity in September in Stwolno?
What is the driest month in Stwolno?
How much does it rain in Stwolno in September?
When it does not snow in Stwolno?
Does it snow in Stwolno in September?
How many hours of daylight does Stwolno have in September?
When are sunrise and sunset in September in Stwolno?
How long on average sun shines in September in Stwolno?
How high is the UV index in September in Stwolno?
Average temperature in September
Stwolno, Poland
- Average high temperature in September: 19.6°C
The warmest month (with the highest average high temperature) is August (25.3°C).
The month with the lowest average high temperature is January (1.3°C).
- Average low temperature in September: 11.4°C
The month with the highest average low temperature is August (15.4°C).
The coldest month (with the lowest average low temperature) is January (-2.3°C).
Average pressure in September
Stwolno, Poland
- Average pressure in September: 1017.4mbar
The month with the highest atmospheric pressure is October (1017.8mbar).
The month with the lowest atmospheric pressure is July (1014.3mbar).
Average wind speed in September
Stwolno, Poland
- Average wind speed in September: 11.6km/h
The windiest month (with the highest average wind speed) is December (13.8km/h).
The calmest months (with the lowest average wind speed) are July and August (11km/h).
Average humidity in September
Stwolno, Poland
- Average humidity in September: 71%
The month with the highest relative humidity is January (88%).
The month with the lowest relative humidity is August (65%).
Average rainfall in September
Stwolno, Poland
- Average rainfall in September: 17mm
The wettest month (with the highest rainfall) is May (41mm).
The driest month (with the least rainfall) is September (17mm).
Average rainfall days in September
Stwolno, Poland
- Average rainfall days in September: 7.9 days
The month with the highest number of rainy days is May (13.8 days).
The month with the least rainy days is September (7.9 days).
Average snowfall in September
Stwolno, Poland
- Average snowfall in September: 0mm
The month with the highest snowfall is January (91mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Stwolno, Poland
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (11.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Stwolno, Poland
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 16h and 36min).
The month with the shortest days is December (Average daylight: 7h and 54min).
- Average sunshine in September: 8h and 4min
The month with the most sunshine is August (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 3h and 18min).
Average sunshine days in September
Stwolno, Poland
- Average sunshine days in September: 21.5 days
The month with the most sunshine days is September (21.5 days).
The month with the least sunshine days is February (11.4 days).
Average UV index in September
Stwolno, Poland
- Average UV index in September: 4
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in September
Stwolno, Poland
- Average cloud cover in September: 38
The month with the most cloud cover is January (Cloud cover 68).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in September
Stwolno, Poland
- Average visibility in September: 10km
The months with the highest visibility are June, July, August and September (10km).
The month with the lowest visibility is January (7km).
Stwolno, Poland
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