Weather in Ostrava in August 2025
- August is usually the hottest month of the year in Ostrava;
Average weather
Average temperature in Ostrava in August
Going from a maximum of +90°F during the day to a minimum of +46°F during the night, the temperature in August averages around +77°F.
The average maximum temperature goes up 0% by the end of the month, compared with the beginning of the month, from +70°F to +70°F.
Is Ostrava warm or cold in August?
Ostrava is typically warm in August.
Maximum temperatures go up compared to the previous month from +75°F to +75°F. The minimum temperature also goes down from +57°F to +55°F.
It’s generally warm, but pack a long-sleeve shirt for evenings.
August is the hottest month in Ostrava, here is the comparison with other months:
Climate in Ostrava in August
| July | August | September | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +75°F | +75°F | +66°F | ||||
| Min. temperature | ||||||
| +43°F | +41°F | +32°F | ||||
| Max. temperature | ||||||
| +97°F | +99°F | +93°F | ||||
| Rainfall | ||||||
| 105 mm | 92 mm | 77 mm | ||||
| Wind | ||||||
| 2 m/s | 2 m/s | 2 m/s | ||||
| Humidity | ||||||
| 72% | 73% | 78% | ||||
| Air pressure | ||||||
| 1014 HPa | 1015 HPa | 1016 HPa | ||||
| Sunny days | ||||||
| 7 | 8 | 7 | ||||
| Cloudy days | ||||||
| 4 | 4 | 7 | ||||
| Rainy days | ||||||
| 16 | 15 | 15 | ||||
| Snowy days | ||||||
| 0 | 0 | 0 | ||||
August weather is still as good as in July. The temperature levels stay the same in the area of +75°F for average maximum temperature during the day. As August arrives, the amount of rainfall goes down. On average, the rainfall volume decreases from 105 mm to 92 mm. Humidity rises from 72% to 73%. The average wind speed doesn’t change much during August, staying around 2 m/s. The good news is there are likely to be more sunny days in August, from 7 to 8.
Next month (September) brings a further decline in the weather.
Wind
The average wind speed is 3 m/s getting up to 5 m/s which is a light breeze; barely moving the tree leaves.
The average wind speed in Ostrava is gradually decreasing during August, going from 4 m/s to 3 m/s over the course of the month.
Rain
How was the weather last August in Ostrava?
Climate Change Over the Years
The climate in Ostrava in August has not changed that much over the last 43 years.
The average temperature was the lowest in 1996 (+51°F) and the highest in 2019 (+60°F). The driest year was 1993 with only 508 mm of rainfall, and the wettest year was 1997 with 974 mm.
FAQ
Is August a good time to visit Ostrava?
Can you sunbathe in Ostrava in August?
Is Ostrava rainy in August?
Is it sunny in Ostrava in August?
Other cities in Czech Republic
Monthly weather in Ostrava
Source of the data
For this page, we’ve looked at the typical weather in Ostrava, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.