September weather forecast
Koszalin, Poland

In September, Koszalin witnesses impending signs of autumn amidst a lingering summer aura. The weather note flips from a sizzling summer to cooler spells, foreshadowing a seasonal shift. Despite rainfall registering at 82mm (3.23") over 11.1 days, the nostalgic summer joy radiates through the prevalent daylight hours. The transformation in Koszalin's weather map makes this month captivating for amateur meteorologists and nature lovers alike.

Temperature

September is marked by a subtle drop in average high-temperatures, transitioning from a pleasant 21°C (69.8°F) in August to a refreshing 17.3°C (63.1°F). Koszalin's temperature lowers to a mean of 9.5°C (49.1°F) during the nights in September.

Rainfall

In Koszalin, in September, it is raining for 11.1 days, with typically 82mm (3.23") of accumulated precipitation. Throughout the year, in Koszalin, there are 118.7 rainfall days, and 704mm (27.72") of precipitation is accumulated.

Daylight

In September, the average length of the day is 12h and 42min.
On the first day of September, sunrise is at 06:04 and sunset at 19:46. On the last day of the month, sunrise is at 06:56 and sunset at 18:33 CEST.

Sunshine

In September, the average sunshine is 4.5h.

UV index

In September, the average daily maximum UV index is 3. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for the ordinary person.
Note: In September, the maximum UV index of 3 transforms into these recommendations:
Heed the precautions - Suggestions to avoid sunburn are made. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. Enhance your sun protection with tightly woven, yet airy clothing.