September weather forecastSuwaki, Poland
September
Weather in September
The first month of the autumn, September, is still a comfortable month in Suwaki, Poland, with temperature in the range of an average low of 10.2°C (50.4°F) and an average high of 18.4°C (65.1°F).Temperature
September weather is marked by a drop in the average high-temperature, falling from a warm 23.8°C (74.8°F) in August to an enjoyable 18.4°C (65.1°F). Throughout September, Suwaki witnesses a nighttime temperature average of 10.2°C (50.4°F).Humidity
The average relative humidity in September in Suwaki is 74%.Rainfall
In September, the rain falls for 9.5 days. Throughout September, 20mm (0.79") of precipitation is accumulated. In Suwaki, during the entire year, the rain falls for 126.8 days and collects up to 277mm (10.91") of precipitation.Snowfall
May through September are months without snowfall in Suwaki.Daylight
In September, the average length of the day is 12h and 40min.On the first day of the month, sunrise is at 05:50 and sunset at 19:28. On the last day of September, sunrise is at 06:40 and sunset at 18:18 CEST.
Sunshine
In September, the average sunshine in Suwaki is 7.8h.UV index
In Suwaki, the average daily maximum UV index in September is 3. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for ordinary individuals.Note: The maximum daily UV index, 3 in September, converts into the following recommendations:
Ensure safety - Recommendations to avert sunburn are presented. To guard against the harmful effects of the Sun, minimize exposure during midday. Opt for tightly woven and loose clothing to enhance protection from the Sun.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Suwaki, Poland
- Average high temperature in September: 18.4°C
The warmest months (with the highest average high temperature) are July and August (23.8°C).
The month with the lowest average high temperature is January (-0.8°C).
- Average low temperature in September: 10.2°C
The month with the highest average low temperature is August (13.9°C).
The coldest month (with the lowest average low temperature) is January (-4.3°C).
Average pressure in September
Suwaki, Poland
- Average pressure in September: 1016.8mbar
The month with the highest atmospheric pressure is October (1017.6mbar).
The month with the lowest atmospheric pressure is July (1013.3mbar).
Average wind speed in September
Suwaki, 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 month (with the lowest average wind speed) is August (10.1km/h).
Average humidity in September
Suwaki, Poland
- Average humidity in September: 74%
The month with the highest relative humidity is January (91%).
The month with the lowest relative humidity is August (69%).
Average rainfall in September
Suwaki, Poland
- Average rainfall in September: 20mm
The wettest month (with the highest rainfall) is May (40mm).
The driest month (with the least rainfall) is April (12mm).
Average rainfall days in September
Suwaki, Poland
- Average rainfall days in September: 9.5 days
The month with the highest number of rainy days is July (17.3 days).
The month with the least rainy days is January (6.1 days).
Average snowfall in September
Suwaki, Poland
- Average snowfall in September: 0mm
The month with the highest snowfall is January (86mm).
The months with the least snowfall are May, June, July, August and September (0mm).
Average snowfall days in September
Suwaki, Poland
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (14.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Suwaki, Poland
- Average daylight in September: 12h and 42min
The month with the longest days is June (Average daylight: 16h and 48min).
The month with the shortest days is December (Average daylight: 7h and 42min).
- Average sunshine in September: 7h and 48min
The month with the most sunshine is August (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 2h and 30min).
Average sunshine days in September
Suwaki, Poland
- Average sunshine days in September: 17.7 days
The month with the most sunshine days is October (19.9 days).
The month with the least sunshine days is July (11.8 days).
Average UV index in September
Suwaki, Poland
- Average UV index in September: 3
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
Suwaki, Poland
- Average cloud cover in September: 42
The month with the most cloud cover is January (Cloud cover 76).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in September
Suwaki, Poland
- Average visibility in September: 9km
The months with the highest visibility are March, April, May, June, July, August, September and October (9km).
The months with the lowest visibility are January and February (7km).
