Koszalin
Poland
Long-term weather forecast
Long-term weather forecast

September weather forecast and climate
Koszalin, Poland

September, the first month of the autumn, in Koszalin, is still a comfortable month, with average temperature ranging between min 9.5°C (49.1°F) and max 17.3°C (63.1°F).

Temperature

In September, the average high-temperature marginally drops, from an agreeable 21°C (69.8°F) in August, to a comfortable 17.3°C (63.1°F). The average low-temperature, in September, is 9.5°C (49.1°F).

Rainfall

In Koszalin, during September, the rain falls for 11.1 days and regularly aggregates up to 82mm (3.23") of precipitation. Throughout the year, there are 118.7 rainfall days, and 704mm (27.72") of precipitation is accumulated.

Daylight

In September, the average length of the day in Koszalin is 12.7h.

Sunshine

In September, the average sunshine in Koszalin is 4.5h.

UV index

In Koszalin, the average daily maximum UV index is 3. A UV Index reading of 3 to 5 represents a moderate health risk from the exposure to the Sun's UV rays for the ordinary person.
Note: The daily maximum UV index of 3 interpret into the following advice:
Take precautions. Light skin individuals may get burned in less than 30 minutes. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.

What is the temperature in September in Koszalin?

In Koszalin, in September, the average high-temperature is 17.3°C (63.1°F), and the average low-temperature is 9.5°C (49.1°F).

How many days does it rain in September in Koszalin?

In Koszalin, Poland, in September, during 11.1 rainfall days, 82mm (3.23") of precipitation is typically accumulated.

How many hours of daylight does Koszalin have in September?

In Koszalin, Poland, the average length of the day in September is 12.7h.

How many hours of sunshine does Koszalin have in September?

The average sunshine in September in Koszalin is 4.5h.

What is the UV index reading in September in Koszalin?

The average daily maximum UV index in September in Koszalin is 3. A UV Index reading of 3 to 5 represents a medium hazard to health from unsafe exposure to the Sun's UV rays.
Average temperature in September - Koszalin, Poland
  • Average high temperature in September: 17.3°C

The warmest month (with the highest average high temperature) is August (21°C).
The month with the lowest average high temperature is January (0.9°C).

  • Average low temperature in September: 9.5°C

The month with the highest average low temperature is July (12.3°C).
The coldest month (with the lowest average low temperature) is January (-3.9°C).

Average rainfall in September - Koszalin, Poland
  • Average rainfall in September: 82mm

The wettest month (with the highest rainfall) is July (88mm).
The driest month (with the least rainfall) is February (30mm).

Average rainfall days in September - Koszalin, Poland
  • Average rainfall days in September: 11.1 days

The month with the highest number of rainy days is November (12.6 days).
The month with the least rainy days is February (7.9 days).

Average daylight in September / Average sunshine in September - Koszalin, Poland
  • Average daylight in September: 12.7h

The month with the longest days is June (Average daylight: 17.1h).
The month with the shortest days is December (Average daylight: 7.4h).

  • Average sunshine in September: 4.5h

The month with the most sunshine is June (Average sunshine: 7.7h).
The month with the least sunshine is December (Average sunshine: 0.9h).

Average UV index in September - Koszalin, Poland
  • Average UV index in September: 3

Months with the highest UV index are June and July (UV index 6).
Months with the lowest UV index are January and December (UV index 0).