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
In September, the average high-temperature decreases from a moderately hot 25°C (77°F) in August to a refreshing 19.5°C (67.1°F). Kalwy in September experiences a low-temperature average of 11.1°C (52°F).Humidity
In Kalwy, Poland, the average relative humidity in September is 71%.Rainfall
In Kalwy, in September, it is raining for 12.1 days, with typically 26mm (1.02") of accumulated precipitation. Throughout the year, there are 153.2 rainfall days, and 354mm (13.94") of precipitation is accumulated.Snowfall
June through October are months without snowfall.Daylight
In September, the average length of the day in Kalwy is 12h and 40min.On the first day of September, sunrise is at 06:05 and sunset at 19:41. On the last day of the month, sunrise is at 06:53 and sunset at 18:32 CEST.
Sunshine
In Kalwy, the average sunshine in September is 8.4h.UV index
In September, the average daily maximum UV index in Kalwy is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for the average person.Note: The UV index of 4 during September leads to these advisories:
Prioritize safety - Recommendations to avert sunburn are shared. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection.
Frequently asked questions
What are September temperatures in Kalwy?
What is the average humidity in September in Kalwy?
How much does it rain in Kalwy in September?
When it does not snow in Kalwy?
How many hours of daylight does Kalwy have in September?
What time are sunrise and sunset in September in Kalwy?
How long on average sun shines in September in Kalwy?
What is the UV index intensity in September in Kalwy?
Average temperature in September
Kalwy, Poland
- Average high temperature in September: 19.5°C
The warmest month (with the highest average high temperature) is August (25°C).
The month with the lowest average high temperature is January (0.9°C).
- Average low temperature in September: 11.1°C
The month with the highest average low temperature is August (15°C).
The coldest month (with the lowest average low temperature) is January (-2.9°C).
Average pressure in September
Kalwy, Poland
- Average pressure in September: 1017.2mbar
The month with the highest atmospheric pressure is October (1017.6mbar).
The month with the lowest atmospheric pressure is July (1014mbar).
Average wind speed in September
Kalwy, Poland
- Average wind speed in September: 12.3km/h
The windiest month (with the highest average wind speed) is December (14.9km/h).
The calmest month (with the lowest average wind speed) is August (11.4km/h).
Average humidity in September
Kalwy, Poland
- Average humidity in September: 71%
The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is August (66%).
Average rainfall in September
Kalwy, Poland
- Average rainfall in September: 26mm
The wettest month (with the highest rainfall) is July (51mm).
The driest month (with the least rainfall) is April (15mm).
Average rainfall days in September
Kalwy, Poland
- Average rainfall days in September: 12.1 days
The month with the highest number of rainy days is July (17.2 days).
The month with the least rainy days is February (8.5 days).
Average snowfall in September
Kalwy, Poland
- Average snowfall in September: 0mm
The month with the highest snowfall is January (74mm).
The months with the least snowfall are June, July, August, September and October (0mm).
Average snowfall days in September
Kalwy, Poland
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (11.3 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Kalwy, Poland
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 16h and 42min).
The month with the shortest days is December (Average daylight: 7h and 48min).
- Average sunshine in September: 8h and 2min
The month with the most sunshine is August (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 3h and 0min).
Average sunshine days in September
Kalwy, Poland
- Average sunshine days in September: 16.4 days
The month with the most sunshine days is October (18.1 days).
The month with the least sunshine days is January (11.3 days).
Average UV index in September
Kalwy, Poland
- Average UV index in September: 4
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in September
Kalwy, Poland
- Average cloud cover in September: 40
The month with the most cloud cover is January (Cloud cover 71).
The month with the least cloud cover is August (Cloud cover 34).
Average visibility in September
Kalwy, Poland
- Average visibility in September: 9km
The months with the highest visibility are June and August (10km).
The month with the lowest visibility is January (7km).
Kalwy, Poland
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