Last updated: August 23, 2025
In Konnevesi, Finland, the average temperature in September hovers around 10°C (50°F). Expect a chill in the air, with minimums dipping to -2°C (29°F) and highs reaching 22°C (72°F). During this month, you'll likely encounter 75 mm (2.9 in) of precipitation over 13 days, complemented by a high average humidity of 91%.
In September in Konnevesi, the average temperature is 10°C (50°F). Maximum temperatures can reach 22°C (72°F), while minimums can dip as low as -2°C (29°F). Travelers should be prepared for a range of weather conditions during this time.
In Konnevesi in September, the precipitation amount is 75 mm (2.9 in) spread over 13 days.
In Konnevesi in September, humidity is 91%. With an average temperature of 10°C (50°F), this humidity feels like an enveloping dampness that makes traveling a bit uncomfortable, as the moisture clings to your skin and dampens your clothes, soaking up any residual warmth from the cool air.
In Konnevesi 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 Konnevesi, you can check the information here.
UV Risk Categories
Weather in Konnevesi varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Konnevesi, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -6°C (22°F) | 46 mm (1.8 inches) | 99% | low |
| February Weather | -6°C (21°F) | 42 mm (1.6 inches) | 97% | low |
| March Weather | -3°C (27°F) | 39 mm (1.6 inches) | 95% | moderate |
| April Weather | 2°C (36°F) | 44 mm (1.7 inches) | 87% | moderate |
| May Weather | 9°C (48°F) | 62 mm (2.4 inches) | 78% | moderate |
| June Weather | 16°C (60°F) | 62 mm (2.4 inches) | 74% | high |
| July Weather | 17°C (63°F) | 73 mm (2.9 inches) | 80% | high |
| August Weather | 15°C (60°F) | 87 mm (3.4 inches) | 85% | moderate |
| September Weather | 10°C (50°F) | 75 mm (2.9 inches) | 91% | moderate |
| October Weather | 5°C (41°F) | 74 mm (2.9 inches) | 95% | low |
| November Weather | 1°C (34°F) | 61 mm (2.4 inches) | 94% | low |
| December Weather | -3°C (26°F) | 64 mm (2.5 inches) | 98% | low |