September weather forecast
Kuressaare, Estonia

September introduces the Autumn season in Kuressaare, subtly shifting the city's weather pattern. A decrease in temperature from the August high of 19°C (66.2°F) hints at the gradual transition towards fall. The rainfall, having increased over the summer, starts showing signs of decline, while the sea temperature begins to moderately cool. Despite the changes, the gentle weather mixed with the sea's late summer warmth still makes September an excellent month for visits.

Temperature

A subtle change in temperatures is noted in Kuressaare as August gives way to September, with average highs reducing from an enjoyable 19°C (66.2°F) to a still refreshing 15°C (59°F). During September, nights in Kuressaare cool slightly to an average low of 10°C (50°F).

Rainfall

In Kuressaare, in September, during 16 rainfall days, 70mm (2.76") of precipitation is typically accumulated. Throughout the year, there are 170 rainfall days, and 592mm (23.31") of precipitation is accumulated.

Sea temperature

In September, the average sea temperature is 14°C (57.2°F).
Note: Entering waters of 14°C (57.2°F) is life-endangering. A mere moment in 13°C (55.4°F) waters feels piercing cold, and below 10°C (50°F) it can lead to immediate cold shock and cessation of breathing control, depending on body resilience.

Daylight

In Kuressaare, the average length of the day in September is 12h and 49min.
On the first day of the month, sunrise is at 06:30 and sunset at 20:29. On the last day of September, sunrise is at 07:33 and sunset at 19:06 EEST.

Sunshine

In September, the average sunshine in Kuressaare is 6h.

UV index

In September, the average daily maximum UV index is 3. A UV Index of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for the average person.
Note: The maximum daily UV index of 3 during September translates into the following directions:
Adopt protective measures - Suggestions to resist sunburn are offered. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses.