Last updated: August 27, 2025
In September, the average temperature in Rundvik, Sweden hovers around 11°C (51°F), with temperatures ranging from a chilly 0°C (33°F) to a mild 19°C (67°F). Expect 82 mm (3.2 in) of precipitation spread over 12 days and an average humidity of 87%, making it a rather damp and brisk month.
In September in Rundvik, the average temperature is 11°C (51°F), with maximums reaching up to 19°C (67°F) and minimums dropping as low as 0°C (33°F). It’s advisable to pack layers for your trip to stay comfortable in the fluctuating temperatures.
In Rundvik in September, the precipitation amount is 82 mm (3.2 in) occurring over a span of 12 days.
In Rundvik in September humidity is 87%. With an average temperature of 11°C (51°F), this humidity feels like a damp chill wrapping around you, making outdoor excursions a bit uncomfortable as the air feels thick and heavy, urging you to seek shelter more often than not.
In Rundvik 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 Rundvik, you can check the information here.
UV Risk Categories
Weather in Rundvik varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Rundvik, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -4°C (25°F) | 55 mm (2.2 inches) | 95% | low |
| February Weather | -5°C (23°F) | 52 mm (2.0 inches) | 94% | low |
| March Weather | -2°C (29°F) | 46 mm (1.8 inches) | 91% | low |
| April Weather | 2°C (36°F) | 28 mm (1.1 inches) | 85% | moderate |
| May Weather | 7°C (45°F) | 46 mm (1.8 inches) | 79% | moderate |
| June Weather | 14°C (57°F) | 62 mm (2.4 inches) | 75% | high |
| July Weather | 16°C (62°F) | 68 mm (2.7 inches) | 80% | high |
| August Weather | 15°C (59°F) | 79 mm (3.1 inches) | 84% | moderate |
| September Weather | 11°C (51°F) | 82 mm (3.2 inches) | 87% | moderate |
| October Weather | 5°C (42°F) | 111 mm (4.4 inches) | 92% | low |
| November Weather | 1°C (34°F) | 75 mm (2.9 inches) | 92% | low |
| December Weather | -2°C (29°F) | 91 mm (3.6 inches) | 94% | low |