May Weather in Ostrava, Czech Republic

Last updated: April 1, 2025

May in Ostrava, Czech Republic, ushers in a vibrant array of weather patterns as temperatures begin to climb. With a maximum of 29°C (84°F), the month offers warm days perfect for outdoor activities, while the average temperature rests at a comfortable 13°C (56°F). However, early May chill can surprise with lows dipping to -2°C (29°F). Rain is a common visitor, with a precipitation total of 101 mm (4.0 in) over approximately 16 days, resulting in a humidity level of around 70%. Despite the rainy spells, May promises a delightful glimpse of spring’s full bloom in this charming Czech city.

May Temperature in Ostrava

As May arrives in Ostrava, Czech Republic, the city transitions from the chill of spring to the warmth of early summer, showcasing a significant rise in temperatures. With minimums hovering around -2°C (29°F) and average daily temperatures reaching 13°C (56°F), residents can finally shed their winter layers. The month peaks with maximums soaring to 29°C (84°F), embodying the promise of sunny days ahead. Compared to prior months, the shift is remarkable; April's mild temperatures laid the groundwork for May's vibrant warmth, hinting at the approaching summer's full embrace. This notable climb in warmth not only marks a seasonal change, but also invites locals and visitors alike to step outside and indulge in outdoor activities as nature bursts into life.

May Weather in Ostrava: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in Ostrava, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec313439485666676759514235
Data source: Temperature data for Ostrava generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

May Precipitation in Ostrava

May marks a significant shift in precipitation patterns for Ostrava, Czech Republic, as the city experiences a substantial leap in rainfall to 101 mm (4.0 in), nearly doubling the amounts seen in the preceding months. With 16 days of precipitation, May stands out not only for its volume but also for the pronounced increase in wet days compared to previous months, setting the stage for a lush early summer. This notable rise is part of a broader trend, as precipitation levels generally escalate from the spring months into the summer season, culminating in August's peak. The wealth of moisture in May aptly prepares the landscape for blooming flora and vibrant green vistas, making it a pivotal month in Ostrava’s climatic calendar.

May Precipitation Trends in Ostrava

The chart displays monthly precipitation patterns in Ostrava, with values for each month alongside May's data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how May's conditions compare to those of other months.
JanFebMarAprMayJunJulAugSepOctNovDec445752601018692112103844968
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

May Humidity in Ostrava

As spring transitions into summer in Ostrava, the humidity levels follow a notable downward trend. Starting at a high of 90% in January, the humidity gradually decreases each month, reaching 70% by May. This reduction marks a shift from the dampness of winter, promoting a more comfortable atmosphere as the warmer months approach. June sees a slight increase to 71%, but overall, the average humidity continues to decline through the summer, hitting a low of 64% in August. This pattern of fluctuating humidity not only showcases the region's changing seasons but also highlights the more temperate conditions that residents and visitors can expect in late spring and early summer.

May Average Humidity in Ostrava

This chart illustrates the average monthly humidity levels in Ostrava, with May's data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, allowing you to see how May's humidity levels compare to other months.
JanFebMarAprMayJunJulAugSepOctNovDec90%87%83%76%70%71%67%64%67%83%90%91%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Ostrava

As spring transitions into summer, May in Ostrava, Czech Republic experiences a notable rise in UV Index levels, reaching a peak of 7, categorized as high. This indicates an accompanying reduction in safe sun exposure time, with the burn time dropping to just 25 minutes—a significant decrease from the 30 minutes in March and 25 minutes in April. The trend showcases a gradual escalation in UV radiation from the earlier months, with May’s index setting the stage for the even more intense rays of June and July, which reach a very high level of 8. As residents and visitors bask in the vibrant early summer sun, it's crucial to stay informed and protected—explore more about the UV index in Ostrava here.

Maximum UV Index Levels in Ostrava for May

The chart shows the monthly maximum UV Index (UVI) for Ostrava in May, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec224678876421
Data source: Ostrava May UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

May Sunshine in Ostrava

In May, Ostrava comes alive with an impressive 376 hours of sunshine, signaling a vibrant shift as spring transitions into summer. This marks a significant increase from the 328 hours recorded in April, setting the stage for longer, sunnier days ahead. The trend of rising sunshine continues into June and July, peaking with 412 and 429 hours, respectively. This consistent surge in daylight not only enhances the city's landscape but also invites residents and visitors alike to revel in outdoor activities. As summer wanes into August and September, the sunlight wanes, yet the months still boast a noteworthy 389 and 310 hours. Overall, May serves as a delightful reminder of the sun's warm embrace, promising the joys of the season to come.

Monthly Sunshine Duration in Ostrava: May Highlighted

The May sunshine duration represents the total number of hours Ostrava experiences direct sunlight during the month of May, excluding cloudy or obstructed periods. This chart compares the sunshine duration of May with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec133h194h294h328h376h412h429h389h310h262h191h147h
Data source: Ostrava May Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Ostrava During May

As spring unfolds in Ostrava, May presents a 33% chance of sunny weather, slightly dipping from the previous month's 34%. This trend hints at a transition as the region approaches summer, yet it still falls short of the sunnier days expected in June, which boasts a notable 51% chance. Comparing May to earlier months reveals a gradual increase in sunny days, with March leading at 41% before April's slight decline. Therefore, while May offers a reasonable opportunity for sunshine, those seeking consistent warmth and brightness may want to hold their breath for the true arrival of summer in June.

Percentage of Sunny Days in May in Ostrava

The chart illustrates the percentage of sunny days in Ostrava throughout the year, with May highlighted. It highlights the variation in sunshine across each month and provides an overview of the typical frequency of sunny days, offering insights into how often Ostrava experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec20%30%41%34%33%51%40%35%42%50%28%18%
Data source: Ostrava May chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Ostrava in May

In Ostrava, Czech Republic, the daylight duration evolves dramatically throughout the year, revealing a clear trend towards longer days as spring transitions into summer. Starting from a modest 8 hours in January, daylight gradually increases, reaching 10 hours in February and 11 hours in March as the days grow longer. By April, sunlight extends to 13 hours, paving the way for May’s promising 15 hours of daylight. This peak of light not only heralds the arrival of summer but is closely followed by June’s remarkable 16 hours, the longest of the year. As summer wanes, daylight begins to recede, with July still enjoying 15 hours, while August and September see gentle declines to 14 hours and 12 hours respectively. The descent continues into autumn, where daylight shrinks back to 10 hours in October, and further to a wintry 8 hours by December. This cycle showcases the captivating rhythm of the seasons, influencing both the landscape and lifestyle in Ostrava.

Average Daylight Hours in Ostrava for May

The chart illustrates the variation in daylight duration in Ostrava throughout the year, with May highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec8h 38m10h 6m11h 55m13h 47m15h 23m16h 13m15h 47m14h 20m12h 33m10h 42m9h 3m8h 10m
Data source: Ostrava daylight hours, calculated by summing the hours between sunrise and sunset for each day.

May Winds in Ostrava

In May, Ostrava experiences a gentle increase in wind, with an average speed of 3.6 m/s (8 mph), marking it as a transition month in the yearly wind pattern. This slight uptick compared to the previous months signals the arrival of spring's breezy charm after the stillness of winter. As April's winds measured 3.4 m/s (8 mph), the change to May showcases a subtle yet invigorating shift, paving the way for the warmer months ahead. Interestingly, June witnesses a notable drop to 2.3 m/s (5 mph), suggesting that the fresh breezes of late spring give way to the more stagnant air of summer. Overall, May serves as a refreshing bridge between seasonal winds, embodying a delightful balance that invites both exploration and relaxation.

Average May Wind Speed in Ostrava

The chart displays monthly wind speed patterns in Ostrava, with values for each month shown alongside May's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how May's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec3.23.53.23.43.6 m/s2.32.42.62.53.83.33.2
Data source: Ostrava May wind data, generated using information from the Copernicus Climate Change Service.

How May Weather in Ostrava Compares to Other Months

The weather in Ostrava changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of May's weather with other months, highlighting differences in temperature, precipitation, and other key factors. Click on each section to discover seasonal trends in Ostrava and find detailed weather information for every month.

May and January present a stark contrast in weather conditions. In May, temperatures range from a low of -2°C (29°F) to a comfortable average of 13°C (56°F), peaking at 29°C (84°F) on warm days. The month experiences moderate precipitation, totaling 101 mm (4.0 in) over approximately 16 days, accompanied by a humidity level of around 70%. In contrast, January boasts much colder weather, with temperatures dropping to a minimum of -18°C (0°F) and averaging only 0°C (31°F), while reaching a maximum of 11°C (52°F). The precipitation in January is less, totaling 44 mm (1.7 in) over 12 days, yet the humidity is higher, averaging at 90%. For more details, you can check Ostrava weather in January.

Comparing the weather in May and February reveals a stark contrast in both temperature and overall conditions. In May, temperatures range from a chilly minimum of -2°C (29°F) to a warm maximum of 29°C (84°F), averaging around 13°C (56°F). The month also sees significant precipitation, totaling 101 mm (4.0 in) over 16 days, with an average humidity of 70%.

In contrast, February is much colder, with temperatures dipping as low as -18°C (0°F) and peaking at 17°C (63°F), averaging just 1°C (34°F). While precipitation is lower at 57 mm (2.2 in) spread across 12 days, the humidity is higher at 87%. For those interested in more details, you can check Ostrava weather in February. This stark difference highlights February's frigid chill compared to May's warm embrace.

The weather in May contrasts significantly with that of March in Ostrava. In May, temperatures range from a chilly minimum of -2°C (29°F) to a pleasant maximum of 29°C (84°F), averaging at 13°C (56°F). This month also experiences higher precipitation, with 101 mm (4.0 in) falling over 16 days and humidity at 70%. In contrast, March is considerably colder, with temperatures ranging from -20°C (-4°F) to a maximum of 20°C (69°F) and an average of just 4°C (40°F). Despite a lower total precipitation of 52 mm (2.0 in) spread across 12 days, March has a higher humidity level at 83%. For more detailed weather information, check Ostrava weather in March.

In comparing the weather of April and May, it is evident that May offers a more varied climate. The average temperature in May rises to 13°C (56°F), contrasting with April's cooler average of 9°C (48°F). Additionally, May experiences warmer maximum temperatures, reaching up to 29°C (84°F), compared to April's peak of 27°C (80°F). While May has a higher total precipitation of 101 mm (4.0 in) over 16 days, April is slightly drier at 60 mm (2.4 in) across 10 days. Humidity is also higher in April at 76%, compared to May's 70%. For a closer look at April's weather specifics, you can refer to Ostrava weather in April.

May and June in Ostrava exhibit distinct weather patterns. May experiences a wide range of temperatures, with a minimum of -2°C (29°F) and a pleasant average of 13°C (56°F), peaking at 29°C (84°F). It is relatively wet, with 101 mm (4.0 in) of precipitation over 16 days. In contrast, June warms up further, featuring a minimum of 5°C (41°F) and an average temperature of 19°C (66°F), reaching a maximum of 32°C (90°F). Although June is slightly drier with 86 mm (3.4 in) of precipitation over 14 days, it maintains a similar humidity level of 71%. For more detailed insights into June's weather, you can check Ostrava weather in June.

May and July present a notable contrast in weather conditions. In May, temperatures range from a chilly minimum of -2°C (29°F) to a pleasant maximum of 29°C (84°F), with an average of 13°C (56°F). Despite experiencing 101 mm (4.0 in) of precipitation spread over 16 days, the humidity averages around 70%. In comparison, July features milder temperatures with a minimum of 7°C (44°F), an average of 19°C (67°F), and a maximum reaching up to 35°C (95°F). There is slightly less precipitation in July, totaling 92 mm (3.6 in) over 14 days, and the humidity decreases to 67%. This makes July generally warmer and drier than May, showcasing the transition into summer. For more specifics on July weather, you can visit Ostrava weather in July.

May and August present contrasting weather patterns. In May, temperatures can dip as low as -2°C (29°F) but typically average around 13°C (56°F), reaching a maximum of 29°C (84°F). The month experiences significant rainfall, with 101 mm (4.0 in) of precipitation over 16 days, accompanied by a humidity level of 70%. In contrast, August offers milder conditions, with minimum temperatures at 7°C (45°F) and an average temperature of 20°C (68°F), peaking at 33°C (92°F). While August sees slightly more precipitation at 112 mm (4.4 in) across 14 days, it has a lower humidity level of 64%. For more detailed insights, refer to Ostrava weather in August.

May and September showcase a transition in weather as spring shifts to autumn. In May, temperatures range from a chilly -2°C (29°F) at night to a warm 29°C (84°F) during the day, culminating in an average of 13°C (56°F). The month sees significant rainfall, with approximately 101 mm (4.0 in) over 16 days and a humidity level around 70%. In contrast, September experiences a slightly warmer average of 15°C (59°F), with temperatures ranging from 1°C (34°F) at night to a peak of 30°C (87°F) during the day. Rainfall is comparable at 103 mm (4.1 in) over just 13 days, and the humidity drops slightly to 67%. For more details on September weather, check Ostrava weather in September.

May and October present distinct differences in weather patterns. In May, temperatures fluctuate from a chilly -2°C (29°F) at night to a warm average of 13°C (56°F) and can reach a high of 29°C (84°F) during the day. The month receives significant rainfall, totaling 101 mm (4.0 in) over approximately 16 days, with humidity levels averaging 70%. In contrast, October sees cooler temperatures, with a minimum of -2°C (28°F) and a lower average of 10°C (51°F), peaking at a mild 24°C (76°F). The precipitation is also less, amounting to 84 mm (3.3 in) over about 11 days, while humidity rises to 83%. For more details, check out Ostrava weather in October.

In May, temperatures in Ostrava range from a chilly -2°C (29°F) to a warm 29°C (84°F), with an average of 13°C (56°F). The month sees approximately 101 mm (4.0 in) of precipitation over 16 days, accompanied by a humidity level of 70%. In contrast, November is significantly cooler, with temperatures fluctuating from -8°C (17°F) to a maximum of 19°C (66°F), averaging around 6°C (43°F). This month experiences less rainfall, totaling 49 mm (1.9 in) over 9 days, but humidity rises to 90%. For more details on November weather in Ostrava, check out Ostrava weather in November.

May and December weather in Ostrava present a stark contrast. In May, temperatures range from a chilly minimum of -2°C (29°F) to a warm maximum of 29°C (84°F), with an average of 13°C (56°F). The month also sees about 101 mm (4.0 inches) of precipitation over approximately 16 days, coupled with a humidity level of 70%. In contrast, December is notably colder, with temperatures dropping to a minimum of -11°C (12°F) and an average of just 1°C (35°F), peaking at 14°C (58°F). December experiences less precipitation at 68 mm (2.7 inches) across 14 days, but the humidity is higher at 91%. For more details on December weather, you can check Ostrava weather in December.

Compare Ostrava's Climate with Cities Worldwide

Conclusion: What to Expect From May Weather in Ostrava

As May unfolds in Ostrava, it brings a delightful transition from the chill of winter to the warmth of summer, characterized by an average temperature of 13°C. This month stands out with its maximum temperatures soaring up to 29°C, inviting residents and visitors alike to revel in the growing sunshine. However, the increase in humidity at 70% and 16 days of precipitation remind us of the spring's lingering traits. Unlike the harsher winters and the more stable, vibrant warmth of summer, May strikes a unique balance, offering a blend of sunshine and showers that enrich the landscape. For more insights into how this month fits into the broader weather pattern, explore Ostrava Climate.