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
September
Weather in September
Temperature
Onset of September comes with a temperature decline, the average high falling from a moderately hot 23.2°C (73.8°F) in August to a refreshing 18.1°C (64.6°F). In September, the average low-temperature records at a cool 10°C (50°F) during the nights.Humidity
In Wiśniewka, the average relative humidity in September is 75%.Rainfall
In Wiśniewka, Poland, in September, during 9.7 rainfall days, 22mm (0.87") of precipitation is typically accumulated. Throughout the year, in Wiśniewka, there are 129.1 rainfall days, and 321mm (12.64") of precipitation is accumulated.Snowfall
In Wiśniewka, snow does not fall in June through September.Daylight
In September, the average length of the day is 12h and 41min.On the first day of September, sunrise is at 06:00 and sunset at 19:39. On the last day of the month, sunrise is at 06:50 and sunset at 18:28 CEST.
Sunshine
The average sunshine in September in Wiśniewka is 8.2h.UV index
In Wiśniewka, Poland, the average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for average individuals.Note: The daily high UV index of 4 in September translates into this advice:
Take precautions. Light skin individuals may get burned in less than 30 minutes. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. Employ a hat with a wide brim for robust protection, cutting UV exposure by half.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature in Wiśniewka?
What is the average humidity in September in Wiśniewka?
How many days does it rain in September in Wiśniewka?
When it does not snow in Wiśniewka?
Does it snow in Wiśniewka in September?
What is the average length of the day in September in Wiśniewka?
When is the sunrise / sunset in September in Wiśniewka?
How many hours of sunshine does Wiśniewka have in September?
What is the UV index reading in September in Wiśniewka?
Average temperature in September
Wiśniewka, 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
Wiśniewka, 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
Wiśniewka, 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
Wiśniewka, 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
Wiśniewka, 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
Wiśniewka, 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
Wiśniewka, 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
Wiśniewka, 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
Wiśniewka, Poland
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 16h and 54min).
The month with the shortest days is December (Average daylight: 7h and 36min).
- Average sunshine in September: 8h and 1min
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
Wiśniewka, 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
Wiśniewka, 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
Wiśniewka, 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
Wiśniewka, 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).
