Last updated: August 27, 2025
In September, the average temperature in Ostashevo, Russian Federation hovers around 12°C (54°F). While you may experience a chilly minimum of -1°C (31°F), temperatures can soar to a pleasant 29°C (84°F). The month sees 62 mm (2.4 in) of precipitation over 11 days, contributing to an average humidity of 86%. Prepare accordingly for a mix of mild weather and occasional rain!
In September in Ostashevo, the average temperature is 12°C (54°F). The maximum can reach 29°C (84°F) and the minimum can be as low as -1°C (31°F). Be prepared for a wide range of temperatures when traveling, as it can be quite warm during the day and chilly at night.
In Ostashevo in September, the precipitation amount is 62 mm (2.4 in) spread over 11 days.
In Ostashevo in September, humidity is 86%. With an average temperature of 12°C (54°F), this humidity feels like a damp blanket wrapping around you, making outdoor activities uncomfortable and travel challenging due to the heavy, muggy atmosphere.
In Ostashevo 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 Ostashevo.
UV Risk Categories
Weather in Ostashevo varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Ostashevo, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -5°C (23°F) | 41 mm (1.6 inches) | 97% | low |
| February Weather | -5°C (23°F) | 43 mm (1.7 inches) | 95% | low |
| March Weather | -1°C (31°F) | 44 mm (1.7 inches) | 92% | moderate |
| April Weather | 5°C (42°F) | 49 mm (1.9 inches) | 83% | moderate |
| May Weather | 12°C (54°F) | 64 mm (2.5 inches) | 75% | high |
| June Weather | 17°C (63°F) | 80 mm (3.2 inches) | 76% | high |
| July Weather | 18°C (65°F) | 113 mm (4.5 inches) | 79% | high |
| August Weather | 17°C (63°F) | 70 mm (2.8 inches) | 78% | high |
| September Weather | 12°C (54°F) | 62 mm (2.4 inches) | 86% | moderate |
| October Weather | 7°C (44°F) | 58 mm (2.3 inches) | 91% | moderate |
| November Weather | 1°C (34°F) | 43 mm (1.7 inches) | 95% | low |
| December Weather | -4°C (26°F) | 66 mm (2.6 inches) | 94% | low |