September weather forecastJonki, Poland
September
Weather in September
September, the first month of the autumn in Jonki, is still a comfortable month, with an average temperature ranging between min 10°C (50°F) and max 18.1°C (64.6°F).Temperature
A decrease in the average high-temperature is observed during September, shifting from a moderately hot 23.2°C (73.8°F) in August to a refreshing 18.1°C (64.6°F). An average temperature of 10°C (50°F) is recorded in Jonki during the nights in September.Humidity
The average relative humidity in September is 75%.Rainfall
In Jonki, during September, the rain falls for 9.7 days and regularly aggregates up to 22mm (0.87") of precipitation. Throughout the year, there are 129.1 rainfall days, and 321mm (12.64") of precipitation is accumulated.Snowfall
June through September are months without snowfall.Daylight
In September, the average length of the day in Jonki, Poland, is 12h and 41min.On the first day of the month, sunrise is at 05:59 and sunset at 19:40. On the last day of September, in Jonki, sunrise is at 06:51 and sunset at 18:28 CEST.
Sunshine
In September, the average sunshine is 8.2h.UV index
In Jonki, the average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.Note: A maximum high daily UV index of 4 during September translates into the following directions:
Ensure safety - Sun damage prevention is strongly urged. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Jonki, Poland
- Average high temperature in September: 18.1°C
The warmest month (with the highest average high temperature) is August (23.2°C).
The month with the lowest average high temperature is January (-0.2°C).
- Average low temperature in September: 10°C
The month with the highest average low temperature is August (13.8°C).
The coldest month (with the lowest average low temperature) is January (-3.5°C).
Average pressure in September
Jonki, Poland
- Average pressure in September: 1016.6mbar
The month with the highest atmospheric pressure is October (1016.9mbar).
The month with the lowest atmospheric pressure is July (1013.5mbar).
Average wind speed in September
Jonki, Poland
- Average wind speed in September: 13.3km/h
The windiest month (with the highest average wind speed) is December (16.6km/h).
The calmest month (with the lowest average wind speed) is August (11.8km/h).
Average humidity in September
Jonki, Poland
- Average humidity in September: 75%
The months with the highest relative humidity are January and December (89%).
The month with the lowest relative humidity is April (69%).
Average rainfall in September
Jonki, Poland
- Average rainfall in September: 22mm
The wettest month (with the highest rainfall) is July (45mm).
The driest month (with the least rainfall) is April (12mm).
Average rainfall days in September
Jonki, Poland
- Average rainfall days in September: 9.7 days
The month with the highest number of rainy days is July (15.8 days).
The month with the least rainy days is February (7.3 days).
Average snowfall in September
Jonki, Poland
- Average snowfall in September: 0mm
The month with the highest snowfall is January (76mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Jonki, Poland
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (12.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Jonki, Poland
- Average daylight in September: 12h and 42min
The month with the longest days is June (Average daylight: 17h and 0min).
The month with the shortest days is December (Average daylight: 7h and 30min).
- Average sunshine in September: 8h and 12min
The month with the most sunshine is August (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 2h and 36min).
Average sunshine days in September
Jonki, Poland
- Average sunshine days in September: 19.2 days
The month with the most sunshine days is September (19.2 days).
The month with the least sunshine days is February (12 days).
Average UV index in September
Jonki, 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 and November (UV index 1).
Average cloud cover in September
Jonki, Poland
- Average cloud cover in September: 41
The month with the most cloud cover is January (Cloud cover 74).
The month with the least cloud cover is August (Cloud cover 35).
Average visibility in September
Jonki, Poland
- Average visibility in September: 9km
The month with the highest visibility is June (10km).
The months with the lowest visibility are January, February and December (8km).
