Last updated: August 23, 2025
In Juankoski, Finland, the average temperature in September is a crisp 10°C (50°F). During this time, you can expect minimum temperatures as low as 0°C (31°F) and a pleasant maximum of 22°C (72°F). Be prepared for wet weather, as 89 mm (3.5 in) of precipitation can fall over approximately 14 days. With an average humidity of 92%, the air will feel quite moist and invigorating.
In September in Juankoski, the average temperature is 10°C (50°F). Maximums can reach 22°C (72°F), while minimums can drop to as low as 0°C (31°F). It's a great time to explore Juankoski with its mild weather, perfect for outdoor activities and sightseeing.
In Juankoski in September, the precipitation amount is 89 mm (3.5 in) over a span of 14 days.
In Juankoski in September humidity is 92%. With an average temperature of 10°C (50°F), this humidity feels like a chilly, damp cloak wrapping around you, making every step outside feel heavy and each breath a bit more labored, turning exploring into an uncomfortable challenge.
In Juankoski 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 Juankoski, you can check the information here.
UV Risk Categories
Weather in Juankoski varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Juankoski, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -7°C (21°F) | 49 mm (1.9 inches) | 99% | low |
| February Weather | -7°C (19°F) | 44 mm (1.7 inches) | 98% | low |
| March Weather | -3°C (26°F) | 45 mm (1.8 inches) | 95% | moderate |
| April Weather | 1°C (35°F) | 41 mm (1.6 inches) | 87% | moderate |
| May Weather | 8°C (46°F) | 56 mm (2.2 inches) | 78% | moderate |
| June Weather | 15°C (59°F) | 66 mm (2.6 inches) | 75% | high |
| July Weather | 17°C (63°F) | 75 mm (2.9 inches) | 83% | high |
| August Weather | 15°C (60°F) | 94 mm (3.7 inches) | 88% | moderate |
| September Weather | 10°C (50°F) | 89 mm (3.5 inches) | 92% | moderate |
| October Weather | 5°C (41°F) | 88 mm (3.5 inches) | 95% | low |
| November Weather | 1°C (33°F) | 77 mm (3.0 inches) | 94% | low |
| December Weather | -4°C (25°F) | 70 mm (2.8 inches) | 98% | low |