Last updated: June 18, 2025
In September, the average temperature in Swan River, Canada hovers around 11°C (52°F), with extremes reaching a chilly -4°C (25°F) at the minimum and a scorching 31°C (89°F) at the maximum. Nature's embrace brings approximately 41 mm (1.6 in) of precipitation over 8 days, while the air carries an average humidity of 76%. Perfect for those who enjoy a blend of cool breezes and occasional showers!
In September in Swan River, the average temperature is 11°C (52°F), with maximums reaching 31°C (89°F) and minimums dropping to as low as -4°C (25°F). This diverse temperature range makes Swan River an ideal destination for travelers seeking both warm days and cool evenings.
In Swan River in September, the total precipitation amount is 41 mm (1.6 in) occurring over the course of 8 days.
In Swan River in September, humidity is 76%. With an average temperature of 11°C (52°F), this humidity feels like a damp chill that can make outdoor exploration feel uncomfortable and heavy, often leaving travelers longing for a warm café to escape the cool, moist air.
In Swan River in September, the maximum UV index is 6, which corresponds to a high Exposure Category. The time to burn is approximately 25 minutes. To find the hourly UV index in Swan River, you can refer to this Hourly UV Index in Swan River.
UV Risk Categories
Weather in Swan River varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Swan River, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -15°C (6°F) | 25 mm (1.0 inches) | 93% | low |
| February Weather | -17°C (2°F) | 16 mm (0.6 inches) | 94% | moderate |
| March Weather | -7°C (20°F) | 33 mm (1.3 inches) | 92% | moderate |
| April Weather | 0°C (33°F) | 27 mm (1.1 inches) | 82% | high |
| May Weather | 10°C (50°F) | 37 mm (1.4 inches) | 73% | very high |
| June Weather | 16°C (61°F) | 99 mm (3.9 inches) | 69% | very high |
| July Weather | 19°C (66°F) | 67 mm (2.6 inches) | 77% | very high |
| August Weather | 17°C (62°F) | 60 mm (2.4 inches) | 78% | high |
| September Weather | 11°C (52°F) | 41 mm (1.6 inches) | 76% | high |
| October Weather | 3°C (37°F) | 41 mm (1.6 inches) | 80% | moderate |
| November Weather | -7°C (19°F) | 35 mm (1.4 inches) | 88% | low |
| December Weather | -13°C (10°F) | 21 mm (0.8 inches) | 95% | low |