September weather forecastSłonne, Poland
September
Weather in September
The first month of the autumn, September, is also an enjoyable month in Słonne, Poland, with an average temperature varying between 18.8°C (65.8°F) and 8.5°C (47.3°F).Temperature
September indicates a shift in the average high-temperature, from August's warm 24.5°C (76.1°F) to an enjoyable 18.8°C (65.8°F). In September, Słonne's temperature tends to fall to an average low of 8.5°C (47.3°F) during the night.Humidity
In Słonne, the average relative humidity in September is 77%.Rainfall
September is the month with the least rainfall. Rain falls for 11.3 days and accumulates 24mm (0.94") of precipitation.Snowfall
June through September are months without snowfall in Słonne.Daylight
In Słonne, the average length of the day in September is 12h and 37min.On the first day of the month, sunrise is at 05:46 and sunset at 19:14. On the last day of September, in Słonne, sunrise is at 06:29 and sunset at 18:11 CEST.
Sunshine
In September, the average sunshine in Słonne is 7.9h.UV index
The average daily maximum UV index in September is 3. A UV Index of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for ordinary individuals.Note: A typical high UV index of 3 in September suggests the following recommendations:
Guard yourself - Precautionary measures against sun damage are advocated. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Słonne, Poland
- Average high temperature in September: 18.8°C
The warmest month (with the highest average high temperature) is August (24.5°C).
The month with the lowest average high temperature is January (-1°C).
- Average low temperature in September: 8.5°C
The month with the highest average low temperature is July (12.2°C).
The coldest month (with the lowest average low temperature) is January (-5.4°C).
Average pressure in September
Słonne, Poland
- Average pressure in September: 1017.7mbar
The month with the highest atmospheric pressure is October (1019.2mbar).
The months with the lowest atmospheric pressure are June and July (1014.3mbar).
Average wind speed in September
Słonne, Poland
- Average wind speed in September: 9.4km/h
The windiest month (with the highest average wind speed) is December (14km/h).
The calmest month (with the lowest average wind speed) is August (8.5km/h).
Average humidity in September
Słonne, Poland
- Average humidity in September: 77%
The month with the highest relative humidity is January (91%).
The month with the lowest relative humidity is August (73%).
Average rainfall in September
Słonne, Poland
- Average rainfall in September: 24mm
The wettest month (with the highest rainfall) is May (65mm).
The driest month (with the least rainfall) is September (24mm).
Average rainfall days in September
Słonne, Poland
- Average rainfall days in September: 11.3 days
The month with the highest number of rainy days is July (19.1 days).
The month with the least rainy days is January (7 days).
Average snowfall in September
Słonne, Poland
- Average snowfall in September: 0mm
The month with the highest snowfall is December (142mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Słonne, Poland
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (16 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Słonne, Poland
- Average daylight in September: 12h and 36min
The month with the longest days is June (Average daylight: 16h and 18min).
The month with the shortest days is December (Average daylight: 8h and 12min).
- Average sunshine in September: 7h and 54min
The month with the most sunshine is August (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 3h and 0min).
Average sunshine days in September
Słonne, Poland
- Average sunshine days in September: 16.2 days
The month with the most sunshine days is October (17.4 days).
The month with the least sunshine days is July (9.3 days).
Average UV index in September
Słonne, 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
Słonne, Poland
- Average cloud cover in September: 40
The months with the most cloud cover are January and February (Cloud cover 71).
The month with the least cloud cover is August (Cloud cover 31).
Average visibility in September
Słonne, Poland
- Average visibility in September: 9km
The months with the highest visibility are April, August and September (9km).
The months with the lowest visibility are January and February (7km).
