Last updated: March 2, 2024
The weather in Ostrava, Czech Republic, during September is characterized by an average temperature of 15°C (59°F). Highs can soar to 28°C (83°F), while lows may dip to 4°C (40°F). Typically, the humidity level in Ostrava throughout September hovers around 67%.
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Average temperature
Maximum temperature
Humidity
In September, Ostrava averages 103 mm (4.1 inches) of rainfall, typically over the course of 13 rainy days. The month enjoys an average of 12 hours 33 minutes of daylight, with the sun shining for approximately 10 hours 19 minutes each day. Additionally, there is a 42% probability of sunny days during this period.
Precipitation
Rainy days
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Chance of sun
In September, the UV Index in Ostrava reaches a maximum of 6, indicating a level of High exposure. The most intense UV radiation typically occurs between 12:00 and 14:00, during which unprotected skin may burn in as little as 25 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 | 4 | 5 | 6 | 6 | 5 | 4 | 3 | 1 | 1 | 1 |
| Exposure | Low | Moderate | High | Moderate | Low | ||||||||
| Time to burn | 45 min | 30 min | 25 min | 30 min | 45 min | ||||||||