Last updated: August 23, 2025
In September, the average temperature in Kerimaeki, Finland hovers around 10°C (51°F), offering a mild climate for visitors. However, temperatures can dip to a chilly 0°C (32°F) at night, while daytime highs can reach a pleasant 23°C (73°F). Expect about 80 mm (3.2 in) of precipitation spread over 13 days, contributing to an average humidity of 90%. Dress accordingly to enjoy all that this destination has to offer!
In September in Kerimaeki, the average temperature is 10°C (51°F). The maximum can reach 23°C (73°F), while the minimum can drop as low as 0°C (32°F). This mild climate makes Kerimaeki an ideal destination for travelers seeking comfortable weather and outdoor activities.
In Kerimaeki in September, the precipitation amount is 80 mm (3.2 in) spread over 13 days.
In Kerimaeki in September, humidity is 90%. With an average temperature of 10°C (51°F), this humidity feels like you are wrapped in a damp blanket, making traveling quite uncomfortable and sticky, as the air hangs heavy around you, often leading to fatigue and a longing for cooler, drier conditions.
In Kerimaeki in September, the maximum UV index is 3, which corresponds to a moderate Exposure Category. The time to burn is approximately 30 minutes. For more details on the hourly UV index in Kerimaeki, you can check the information here.
UV Risk Categories
Weather in Kerimaeki varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Kerimaeki, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -6°C (22°F) | 47 mm (1.8 inches) | 98% | low |
| February Weather | -6°C (21°F) | 46 mm (1.8 inches) | 96% | low |
| March Weather | -3°C (27°F) | 45 mm (1.8 inches) | 93% | moderate |
| April Weather | 2°C (36°F) | 43 mm (1.7 inches) | 88% | moderate |
| May Weather | 10°C (50°F) | 54 mm (2.1 inches) | 77% | moderate |
| June Weather | 16°C (61°F) | 56 mm (2.2 inches) | 75% | high |
| July Weather | 17°C (64°F) | 81 mm (3.2 inches) | 82% | high |
| August Weather | 16°C (61°F) | 88 mm (3.5 inches) | 84% | moderate |
| September Weather | 10°C (51°F) | 80 mm (3.2 inches) | 90% | moderate |
| October Weather | 5°C (42°F) | 76 mm (3.0 inches) | 93% | low |
| November Weather | 1°C (34°F) | 54 mm (2.1 inches) | 93% | low |
| December Weather | -4°C (26°F) | 71 mm (2.8 inches) | 95% | low |