Last updated: August 27, 2025
In Sertolovo, Russian Federation, the average temperature in September hovers around 11°C (53°F), with a minimum dipping to -1°C (31°F) and a maximum reaching 25°C (77°F). During this month, expect 72 mm (2.8 in) of precipitation spread over 12 days, contributing to an average humidity of 91%. Prepare for a month that can be quite variable, so pack accordingly!
In September in Sertolovo, the average temperature is 11°C (53°F). The maximum can reach 25°C (77°F), and the minimum can be as low as -1°C (31°F). It's a great time to visit, as you'll experience mild weather with the possibility of warm days.
In Sertolovo in September, the total precipitation amount is 72 mm (2.8 in) over the course of 12 days.
In Sertolovo in September, humidity is 91%. With an average temperature of 11°C (53°F), this humidity feels like a damp embrace, making travel feel weighty and exhausting, as the thick air clings to your skin and makes every step a little more effortful.
In Sertolovo 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 Sertolovo for better planning.
UV Risk Categories
Weather in Sertolovo varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Sertolovo, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -5°C (24°F) | 42 mm (1.7 inches) | 98% | low |
| February Weather | -5°C (23°F) | 52 mm (2.0 inches) | 96% | low |
| March Weather | -2°C (29°F) | 53 mm (2.1 inches) | 94% | moderate |
| April Weather | 4°C (39°F) | 60 mm (2.4 inches) | 88% | moderate |
| May Weather | 10°C (50°F) | 54 mm (2.1 inches) | 78% | moderate |
| June Weather | 16°C (61°F) | 59 mm (2.3 inches) | 76% | high |
| July Weather | 18°C (64°F) | 91 mm (3.6 inches) | 83% | high |
| August Weather | 16°C (61°F) | 112 mm (4.4 inches) | 86% | moderate |
| September Weather | 11°C (53°F) | 72 mm (2.8 inches) | 91% | moderate |
| October Weather | 6°C (43°F) | 80 mm (3.1 inches) | 93% | low |
| November Weather | 2°C (35°F) | 51 mm (2.0 inches) | 93% | low |
| December Weather | -3°C (27°F) | 72 mm (2.8 inches) | 95% | low |