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
The decrease of average high-temperatures is mild in September, with a decline from a warm 23.5°C (74.3°F) in August to an enjoyable 18.2°C (64.8°F). During the month of September, an average low-temperature of 9.5°C (49.1°F) is recorded.Humidity
In September, the average relative humidity is 77%.Rainfall
In Kolwiny, during September, the rain falls for 12.8 days and regularly aggregates up to 28mm (1.1") of precipitation. In Kolwiny, during the entire year, the rain falls for 154.2 days and collects up to 430mm (16.93") of precipitation.Snowfall
In Kolwiny, snow does not fall in June through September.Daylight
The average length of the day in September in Kolwiny is 12h and 42min.On the first day of September, sunrise is at 05:43 and sunset at 19:26. On the last day of the month, sunrise is at 06:36 and sunset at 18:13 CEST.
Sunshine
The average sunshine in September in Kolwiny is 7.6h.UV index
In September, the average daily maximum UV index in Kolwiny is 3. A UV Index reading of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for average individuals.Note: A daily maximum UV index of 3 in September translates into the following instructions:
Undertake precautions - Obligation exists to protect against skin and eye damage. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures in Kolwiny?
What is the average humidity in September in Kolwiny?
How many days does it rain in September in Kolwiny?
When it does not snow in Kolwiny?
Does it snow in Kolwiny in September?
What is the average length of the day in September in Kolwiny?
What time are sunrise and sunset in September in Kolwiny?
How long on average sun shines in September in Kolwiny?
What is the UV index reading in September in Kolwiny?
Average temperature in September
Kolwiny, Poland
- Average high temperature in September: 18.2°C
The warmest month (with the highest average high temperature) is August (23.5°C).
The month with the lowest average high temperature is January (-1.4°C).
- Average low temperature in September: 9.5°C
The month with the highest average low temperature is August (13.2°C).
The coldest month (with the lowest average low temperature) is January (-5.1°C).
Average pressure in September
Kolwiny, Poland
- Average pressure in September: 1016.5mbar
The month with the highest atmospheric pressure is October (1017.4mbar).
The month with the lowest atmospheric pressure is July (1013.1mbar).
Average wind speed in September
Kolwiny, Poland
- Average wind speed in September: 12.3km/h
The windiest month (with the highest average wind speed) is December (15.1km/h).
The calmest month (with the lowest average wind speed) is August (10.8km/h).
Average humidity in September
Kolwiny, Poland
- Average humidity in September: 77%
The month with the highest relative humidity is January (91%).
The month with the lowest relative humidity is April (72%).
Average rainfall in September
Kolwiny, Poland
- Average rainfall in September: 28mm
The wettest month (with the highest rainfall) is May (60mm).
The driest month (with the least rainfall) is April (23mm).
Average rainfall days in September
Kolwiny, Poland
- Average rainfall days in September: 12.8 days
The month with the highest number of rainy days is July (19.2 days).
The month with the least rainy days is January (6.9 days).
Average snowfall in September
Kolwiny, Poland
- Average snowfall in September: 0mm
The month with the highest snowfall is January (112mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Kolwiny, Poland
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (13.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Kolwiny, Poland
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 17h and 6min).
The month with the shortest days is December (Average daylight: 7h and 24min).
- Average sunshine in September: 7h and 4min
The month with the most sunshine is August (Average sunshine: 10h and 6min).
The months with the least sunshine are January and February (Average sunshine: 2h and 42min).
Average sunshine days in September
Kolwiny, Poland
- Average sunshine days in September: 15.1 days
The month with the most sunshine days is October (16.5 days).
The month with the least sunshine days is July (9.6 days).
Average UV index in September
Kolwiny, Poland
- Average UV index in September: 3
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, November and December (UV index 1).
Average cloud cover in September
Kolwiny, Poland
- Average cloud cover in September: 44
The month with the most cloud cover is January (Cloud cover 74).
The month with the least cloud cover is August (Cloud cover 36).
Average visibility in September
Kolwiny, Poland
- Average visibility in September: 9km
The months with the highest visibility are April, May, June, July, August, September and October (9km).
The months with the lowest visibility are January and February (7km).
