Last updated: March 2, 2024
The weather in Kostrovo, Russian Federation, during September is characterized by an average temperature of 12°C (54°F). Highs can soar to 26°C (79°F), while lows may dip to 1°C (35°F). Typically, the humidity level in Kostrovo throughout September hovers around 86%.
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Average temperature
Maximum temperature
Humidity
In September, Kostrovo averages 62 mm (2.4 inches) of rainfall, typically over the course of 10 rainy days. The month enjoys an average of 12 hours 41 minutes of daylight, with the sun shining for approximately 9 hours 36 minutes each day. Additionally, there is a 19% probability of sunny days during this period.
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Chance of sun
In September, the UV Index in Kostrovo reaches a maximum of 5, indicating a level of Moderate exposure. The most intense UV radiation typically occurs between 11:00 and 13:00, during which unprotected skin may burn in as little as 30 minutes.
| 07:00 | 08:00 | 09:00 | 10:00 | 11:00 | 12:00 | 13:00 | 14:00 | 15:00 | 16:00 | 17:00 | 18:00 | 19:00 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UVI | 1 | 1 | 2 | 3 | 4 | 4 | 4 | 4 | 3 | 2 | 1 | 1 | 1 |
| Exposure | Low | Moderate | Low | ||||||||||
| Time to burn | 45 min | 30 min | 45 min | ||||||||||