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
The transition into September subtly indicates a reduction in the average high-temperature, down to a comfortable 17.8°C (64°F) from August's agreeable 22.5°C (72.5°F). Nightly temperatures in Sianowo drop to an average low of 11.4°C (52.5°F) in September.Humidity
The average relative humidity in September is 75%.Rainfall
In September, the rain falls for 15.7 days. Throughout September, 38mm (1.5") of precipitation is accumulated. In Sianowo, during the entire year, the rain falls for 172.5 days and collects up to 497mm (19.57") of precipitation.Snowfall
June through September are months without snowfall in Sianowo, Poland.Daylight
In Sianowo, the average length of the day in September is 12h and 43min.On the first day of the month, sunrise is at 05:56 and sunset at 19:38. On the last day of September, in Sianowo, sunrise is at 06:48 and sunset at 18:26 CEST.
Sunshine
In September, the average sunshine is 8h.UV index
In Sianowo, the average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for the average person.Note: A typical high UV index of 4 in September suggests the following recommendations:
Preventative actions are necessary - The mandate to avoid skin and eye damage is in place. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. Tightly woven clothing, when worn loosely, shields effectively against the Sun.
Frequently asked questions
What is the temperature in September in Sianowo?
What is the average humidity in September in Sianowo?
How much does it rain in Sianowo in September?
When it does not snow in Sianowo?
Does it snow in Sianowo in September?
How many hours of daylight does Sianowo have in September?
When are sunrise and sunset in September in Sianowo?
How many hours of sunshine does Sianowo have in September?
How high is the UV index in September in Sianowo?
Average temperature in September
Sianowo, Poland
- Average high temperature in September: 17.8°C
The warmest month (with the highest average high temperature) is August (22.5°C).
The month with the lowest average high temperature is January (0.6°C).
- Average low temperature in September: 11.4°C
The month with the highest average low temperature is August (14.4°C).
The coldest month (with the lowest average low temperature) is January (-2.4°C).
Average pressure in September
Sianowo, Poland
- Average pressure in September: 1016.2mbar
The month with the highest atmospheric pressure is October (1016.6mbar).
The months with the lowest atmospheric pressure are July and December (1013.2mbar).
Average wind speed in September
Sianowo, Poland
- Average wind speed in September: 13.8km/h
The windiest month (with the highest average wind speed) is December (16.8km/h).
The calmest month (with the lowest average wind speed) is August (12.1km/h).
Average humidity in September
Sianowo, Poland
- Average humidity in September: 75%
The months with the highest relative humidity are January, February and December (87%).
The month with the lowest relative humidity is April (71%).
Average rainfall in September
Sianowo, Poland
- Average rainfall in September: 38mm
The wettest month (with the highest rainfall) is July (71mm).
The driest month (with the least rainfall) is April (20mm).
Average rainfall days in September
Sianowo, Poland
- Average rainfall days in September: 15.7 days
The month with the highest number of rainy days is July (20.2 days).
The month with the least rainy days is February (8.9 days).
Average snowfall in September
Sianowo, Poland
- Average snowfall in September: 0mm
The month with the highest snowfall is January (128mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Sianowo, Poland
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (16.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Sianowo, Poland
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 17h and 6min).
The month with the shortest days is December (Average daylight: 7h and 24min).
- Average sunshine in September: 8h and 0min
The month with the most sunshine is August (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 2h and 54min).
Average sunshine days in September
Sianowo, Poland
- Average sunshine days in September: 11.7 days
The month with the most sunshine days is April (15 days).
The month with the least sunshine days is December (7.5 days).
Average UV index in September
Sianowo, Poland
- Average UV index in September: 4
The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, November and December (UV index 1).
Average cloud cover in September
Sianowo, 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
Sianowo, Poland
- Average visibility in September: 10km
The months with the highest visibility are June, August and September (10km).
The months with the lowest visibility are January and February (8km).
Sianowo, Poland
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