Last updated: June 18, 2025
In September, the average temperature in Haines Junction, Canada hovers around 6°C (42°F). While the mercury can drop as low as -8°C (19°F), it may also climb to a comfortable 19°C (67°F). Expect about 47 mm (1.8 in) of precipitation spread over 9 days, and be prepared for high humidity, averaging a muggy 98%.
In September in Haines Junction, the average temperature is 6°C (42°F), with maximums reaching 19°C (67°F) and minimums dropping as low as -8°C (19°F). Be prepared for a mix of chilly weather and occasional warmth during your travels.
In Haines Junction in September, the total precipitation amount is 47 mm (1.8 in), which falls over the course of 9 days.
In Haines Junction in September humidity is 98%. With an average temperature of 6°C (42°F), this humidity feels like stepping into a wet blanket, making traveling uncomfortable as the cold dampness seeps into your clothes and chills you to the bone.
In Haines Junction in September, the maximum UV index reaches 5, which corresponds to a moderate Exposure Category. Under these conditions, the estimated time to burn is approximately 30 minutes. For more details, you can check the Hourly UV Index in Haines Junction.
UV Risk Categories
Weather in Haines Junction varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Haines Junction, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -19°C (-2°F) | 48 mm (1.9 inches) | 99% | low |
| February Weather | -18°C (0°F) | 40 mm (1.6 inches) | 98% | low |
| March Weather | -10°C (14°F) | 41 mm (1.6 inches) | 99% | moderate |
| April Weather | -2°C (28°F) | 22 mm (0.9 inches) | 98% | moderate |
| May Weather | 5°C (40°F) | 43 mm (1.7 inches) | 96% | high |
| June Weather | 10°C (50°F) | 68 mm (2.7 inches) | 97% | high |
| July Weather | 13°C (55°F) | 63 mm (2.5 inches) | 99% | high |
| August Weather | 11°C (52°F) | 78 mm (3.1 inches) | 105% | high |
| September Weather | 6°C (42°F) | 47 mm (1.8 inches) | 98% | moderate |
| October Weather | -2°C (29°F) | 82 mm (3.2 inches) | 99% | moderate |
| November Weather | -13°C (9°F) | 56 mm (2.2 inches) | 100% | low |
| December Weather | -16°C (4°F) | 90 mm (3.5 inches) | 98% | low |