Climate and monthly weather forecast
Ostrava, Czech Republic

In the heartland of the Czech Republic, situated on the banks of the Odra River, lies the city of Ostrava. Its climate is classified as Marine west coast, warm summer, according to the Köppen climate classification, more specifically Cfb. The city experiences moderate rainfall throughout the year with climate parameters varying across the progression of the yearly cycle.

Throughout the year, the high temperatures in Ostrava vary from a mild 1°C (33.8°F) in January peaking to a moderately warm 24°C (75.2°F) in July. Similarly, low temperatures swing from a chilly -5°C (23°F) in January to a comfortable 12°C (53.6°F) from July to August. Rainfall, a rather consistent phenomenon in Ostrava, fluctuates from 32mm (1.26") in January to 90mm (3.54") in July. Recognizing the number of rainy days, the expanse from January to December also sees a minor variation, early months of the year and December each consisting of 16 rainy days to the 13 days scattered over the remaining months.

Additionally, daylight hours see a noticeable change with the year's beginning standing at 8.7 hours in January extending to a substantial 16.3 hours in June, subsequently reducing as the year progresses. Correspondingly, sunshine hours shift from a minimum of 1 hour in December to a maximum of 7 hours sustained from May to August. Finally, the city's UV index commences at 1 in January, generally amplifying to 7 between June and July before descending again.

For those keen on exploring the city without having to navigate through its colder temperatures, the ideal time to visit Ostrava would be from May to September when the daily high temperatures average between 19°C (66.2°F) and 24°C (75.2°F). It is also a period which sees the most hours of daylight, averaging between 15.4 and 14.4 hours. Despite a considerable amount of rainfall, the city is often bathed in up to seven hours of sunshine per day, providing ample opportunity to explore the sights and experiences Ostrava has to offer under a pleasant warmth.

Visitors might want to avoid the period from December to February, as these months register the lowest temperatures with high temperatures hovering between 1°C (33.8°F) and 3°C (37.4°F), and lows plummeting to as cold as -5°C (23°F) in January. In addition to the cold, sunshine is minimal during these months, averaging at most 2 hours in a day, limiting the daylight hours to an annual low. The city's UV index during this period also drops to its lowest with a rank of 1, which may not be suitable for those seeking a winter sun holiday.

Spring in Ostrava is awakened by the steadily increasing temperatures from March to May, where highs swing from 8°C (46.4°F) to 19°C (66.2°F). Meanwhile, lows gradually rise from -1°C (30.2°F) to 8°C (46.4°F). Annual rainfall also starts to climb during this period, from 34mm (1.34") in March to 82mm (3.23") in May. Correspondingly, the number of rainy days slightly increases. Daylight hours expand from 11.9 hours in March to 15.4 hours in May, and sunshine hours grow from 4 hours to a pleasant 7 hours, allowing for extended outdoor activities.

The summer in Ostrava lasts from June until August and is characterized by the year's highest temperatures. The city sees high temperatures ranging from 22°C (71.6°F) to 24°C (75.2°F). Concurrently, the lows stay comfortably between 11°C (51.8°F) to 12°C (53.6°F). This period also observes the city's highest rainfall index, scaling a peak of 90mm (3.54"). The daylight hours, however, are at their maximum for the year, providing up to 16.3 hours in June. Sunshine hours maintain their peak at 7 hours easing outdoor pursuits under the summer sun.

During the autumnal transition from September to November, high temperatures decrease from 19°C (66.2°F) to a cooler 7°C (44.6°F). In turn, the low temperatures lessen from 9°C (48.2°F) in September to around 1°C (33.8°F) in November. Despite these diminishing temperatures, rainy days are constant at 14 days per month, while rainfall drops from 57mm (2.24") in September to 45mm (1.77") in November. The daylight hours also start to recede, totalling at 9.1 hours in November, while sunshine hours dwindle to 2 hours.

Winter in Ostrava is recognized by a drop in temperatures with high temperatures between 1°C (33.8°F) and 2°C (35.6°F) from December to February, while low temperatures fall between -3°C (26.6°F) and -5°C (23°F) over the same period. Despite lower temperatures, rainfall continues though at a reduced rate, fluctuating from 39mm (1.54") in December to 34mm (1.34") in February. Daylight is also at its shortest during these months, offering only 8.2 hours in December and subsequently recovering. Even with the lesser daylight hours, sunshine hours remain between 1 and 2 hours across these colder months.

In Ostrava, January is the coldest month with temperatures ranging from -5°C (23°F) to as high as 1°C (33.8°F). There's a considerably frosty climate as compared to the following month, February. Also, coats and scarves will be a common sight due to the presence of an icy atmosphere, sparkling frost patterns, and frequent snowfalls. Weather in January »

The Ostrava weather in February remains cold, but shows a slight rise from January with temperatures climbing up to 3°C (37.4°F). The possibility of wintry precipitation persists, but there are visible inklings of spring on the horizon. Weather in February »

In March, Ostrava experiences a transition from winter to spring. Temperatures continue to rise with highs reaching up to 8°C (46.4°F). Though patches of snow may linger in shaded spots, significant snowfall becomes less frequent. Weather in March »

Ostrava starts to feel the full effect of spring in April. With a temperature high of 14°C (57.2°F), nature is in full bloom. Compared to March, the weather is noticeably warmer and it invites people to explore the outdoors. Occasional spring showers can be expected, but these usually pave the way for gorgeous rainbows. Weather in April »

May ushers in the beginning of the warm season in Ostrava. Going up to 19°C (66.2°F), the temperature creates a pleasant atmosphere ideal for outdoor activities. Compared to the previous month, more sunlight saturates the city, ripening foliage and boosting natural beauty. Weather in May »

June exhibits true signs of summer in Ostrava, with temperatures peaking at 22°C (71.6°F). The likelihood of rain tends to rise from May to June. The city sees its longest daylight hours at this time of the year, often resulting in stunning sunsets that paint the sky with hues of red and orange. Weather in June »

July is the hottest month in Ostrava, with the temperature going up to 24°C (75.2°F). The weather tends to be more humid compared to June. There is a more prominent necessity to move activities to cooler, shaded areas or indoor locations during peak sun hours. Weather in July »

August weather in Ostrava presents temperatures almost matching July's with a high of 23°C (73.4°F). This indicates only a slight drop from the peak summer heat. This month is considered high season for tourism, making the city lively and vibrant. Weather in August »

The arrival of September in Ostrava marks the start of the fall season. With temperature highs of around 19°C (66.2°F), crisp and cool mornings typical of autumn start becoming common. The leaves on the trees slowly turn from green to hues of red, orange and yellow. Weather in September »

By October, Ostrava is well into the fall season. The city's temperature, reaching up to 14°C (57.2°F), cools down further from the warmer months of the year. The noticeably cooling climate brings about a drop in daylight hours. Weather in October »

Recent November's weather of Ostrava shows a significant drop in the temperature, with highs of only 7°C (44.6°F). There is a distinct chill in the air, a prelude to the pending winter. The autumn foliage is becoming sparse, and the trees begin to bare their branches in readiness for the colder months. Weather in November »

In December, Ostrava dives into a full winter mode. With temperatures dropping to lows of -3°C (26.6°F), the city starts seeing frequent snow flurries. The weather during this month bears striking similarity to January. The spectral white layer of snow lends an inescapable charm to the cityscape. Weather in December »