Last updated: August 27, 2025
In September, the average temperature in Tomsk, Russian Federation is a mild 10°C (49°F). Expect a minimum chill of -2°C (28°F) and a pleasantly warm maximum of 25°C (78°F). During this month, you can anticipate about 58 mm (2.3 in) of precipitation spread over 14 days, with an average humidity level of 73%.
In September in Tomsk, the average temperature is 10°C (49°F). The maximum can reach 25°C (78°F), while the minimum can drop as low as -2°C (28°F). This variability in temperature makes it essential for travelers to pack accordingly for both warm and chilly conditions.
In Tomsk in September, the precipitation amount is 58 mm (2.3 in) over the course of 14 days.
In Tomsk in September, humidity is 73%. With an average temperature of 10°C (49°F), this humidity feels like a chilly, damp embrace that can make outdoor activities less enjoyable, creating a persistent, uncomfortable stickiness that clings to your clothes and chills you to the bone, urging travelers to seek warmth indoors or cozy cafes.
In Tomsk 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 Tomsk for better planning.
UV Risk Categories
Weather in Tomsk varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Tomsk, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -16°C (3°F) | 35 mm (1.4 inches) | 98% | low |
| February Weather | -14°C (8°F) | 29 mm (1.2 inches) | 98% | low |
| March Weather | -5°C (23°F) | 29 mm (1.1 inches) | 96% | moderate |
| April Weather | 3°C (38°F) | 36 mm (1.4 inches) | 94% | moderate |
| May Weather | 11°C (52°F) | 53 mm (2.1 inches) | 71% | high |
| June Weather | 17°C (62°F) | 61 mm (2.4 inches) | 56% | high |
| July Weather | 18°C (65°F) | 67 mm (2.6 inches) | 58% | high |
| August Weather | 17°C (63°F) | 55 mm (2.2 inches) | 56% | high |
| September Weather | 10°C (49°F) | 58 mm (2.3 inches) | 73% | moderate |
| October Weather | 3°C (38°F) | 49 mm (1.9 inches) | 85% | moderate |
| November Weather | -8°C (18°F) | 66 mm (2.6 inches) | 96% | low |
| December Weather | -14°C (7°F) | 45 mm (1.8 inches) | 98% | low |