Last updated: August 23, 2025
In September, the average temperature in Kaerkoelae, Finland hovers around 11°C (53°F). Be prepared for a minimum chilling down to -3°C (27°F) and a pleasant maximum reaching 23°C (74°F). With an expected precipitation of 62 mm (2.4 in) spread over 12 days, don’t forget your umbrella! Average humidity in this month is a brisk 90%, making it a time for cozy layers and warm drinks.
In September in Kaerkoelae, the average temperature is 11°C (53°F). Maximum temperatures can reach 23°C (74°F), while minimums can drop as low as -3°C (27°F). It's advisable to pack layers to accommodate the varying temperatures during your travels.
In Kaerkoelae in September, the precipitation amount is 62 mm (2.4 in) spread over 12 days.
In Kaerkoelae in September, humidity is 90%. With an average temperature of 11°C (53°F), this humidity feels like a heavy cloak, making traveling feel sticky and exhausting, as the dampness clings to your skin and the chill in the air sharpens the discomfort, leaving you longing for a breath of fresh, dry air.
In Kaerkoelae in September, the maximum UV index reaches 4, which corresponds to a moderate Exposure Category. With a time to burn of 30 minutes, it’s important to take precautions to protect your skin. You can find more details in the Hourly UV Index in Kaerkoelae for better planning.
UV Risk Categories
Weather in Kaerkoelae varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Kaerkoelae, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -3°C (26°F) | 53 mm (2.1 inches) | 97% | low |
| February Weather | -4°C (25°F) | 47 mm (1.8 inches) | 95% | low |
| March Weather | -1°C (30°F) | 50 mm (2.0 inches) | 93% | moderate |
| April Weather | 3°C (38°F) | 41 mm (1.6 inches) | 86% | moderate |
| May Weather | 10°C (50°F) | 61 mm (2.4 inches) | 75% | moderate |
| June Weather | 16°C (61°F) | 60 mm (2.4 inches) | 75% | high |
| July Weather | 17°C (64°F) | 88 mm (3.5 inches) | 80% | high |
| August Weather | 16°C (61°F) | 82 mm (3.2 inches) | 83% | moderate |
| September Weather | 11°C (53°F) | 62 mm (2.4 inches) | 90% | moderate |
| October Weather | 6°C (44°F) | 81 mm (3.2 inches) | 93% | low |
| November Weather | 3°C (37°F) | 56 mm (2.2 inches) | 94% | low |
| December Weather | -2°C (29°F) | 69 mm (2.7 inches) | 95% | low |