September weather forecast
Pori, Finland

September is a month of transition as autumn begins to cast its spell over Pori. As the average high temperature drops to around 14°C (57.2°F), the city begins to cool down. With the chilling winds picking up, leaves changing color, and the daylight hours reducing, signs of the impending winter become more discernible. While the typical summer crowd starts to dissipate, the city enters a serene and scenic phase, displaying gorgeous autumn hues and calm weather.

Temperature

September weather is marked by a drop in the average high-temperature, falling from an agreeable 20°C (68°F) in August to a moderate 14°C (57.2°F). Pori experiences a mean temperature of 6°C (42.8°F) during September nights.

Rainfall

During September, Pori regularly aggregates up to 36mm (1.42") of precipitation. Throughout the year, in Pori, 360mm (14.17") of rain is accumulated.

Sea temperature

In Pori, in September, the average water temperature is 11.8°C (53.2°F).
Note: Navigating the 11.8°C (53.2°F) at 13°C (55.4°F) is no joy, and temperatures less than 10°C (50°F) can threaten breathing and cause a chilling shock, gauging personal stamina.

Daylight

The average length of the day in September in Pori is 12h and 55min.
On the first day of the month, sunrise is at 06:25 and sunset at 20:40. On the last day of September, in Pori, sunrise is at 07:38 and sunset at 19:07 EEST.