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Weather in Ostrava - 14-day forecast

Detailed weather forecast for Ostrava, Czech Republic: daytime and night temperature, rain, sunrise and sunset - today and for the next two weeks.
Forecast for the next days in Ostrava
today🌧️ 18°💧 4.8 mm
Sun🌤️ 16°💧 0.1 mm
Mon☁️ 21°💧 13.3 mm
Tue☀️ 25°💧 0.8 mm
Wed🌧️ 23°💧 7.2 mm
Thu🌧️ 18°💧 17.8 mm
Fri☁️ 20°💧 13 mm
Sat🌧️ 18°💧 5.2 mm
Forecast vs 1991-2020 climate normal

How does the current forecast compare with normal?

We compare the coming days with weather usually observed at this time of year.

NASA POWER

Sunday 6 Sept in Ostrava, the forecast high is 16°C. Typical daytime temperatures at this time of year range from 18°C to 25°C, so it will be cooler than usual. It is cooler than 88% of similar days.

18°Ccooler than usual
usually 18°C–25°C
cooler than 81% of similar days
night: exceptionally warm rain: more rain than usual wind: stronger than usual
16°Ccooler than usual
usually 18°C–25°C
cooler than 88% of similar days
night: warmer than usual rain: typical rainfall wind: typical
21°Cnear normal
usually 18°C–25°C
night: exceptionally warm rain: exceptionally wet wind: exceptionally light
25°Cwarmer than usual
usually 18°C–25°C
warmer than 82% of similar days
night: exceptionally warm rain: typical rainfall wind: typical
23°Cnear normal
usually 18°C–25°C
night: exceptionally warm rain: more rain than usual wind: typical
18°Ccooler than usual
usually 17°C–25°C
cooler than 77% of similar days
night: exceptionally warm rain: exceptionally wet wind: typical
20°Cnear normal
usually 17°C–25°C
night: exceptionally warm rain: exceptionally wet wind: typical

How warm was this week in previous years?

Each bar shows the average daily high during the same 7-day period in each year.

swipe to see more years →
10°20°30° 1981: 21°C1982: 25°C1983: 22°C1984: 19°C1985: 15°C1986: 16°C1987: 21°C1988: 20°C1989: 20°C1990: 17°C1991: 19°C1992: 19°C1993: 21°C1994: 23°C1995: 20°C1996: 14°C1997: 19°C1998: 22°C1999: 25°C2000: 20°C2001: 16°C2002: 25°C2003: 22°C2004: 22°C2005: 25°C2006: 22°C2007: 15°C2008: 26°C2009: 22°C2010: 17°C2011: 23°C2012: 25°C2013: 22°C2014: 22°C2015: 19°C2016: 26°C2017: 22°C2018: 24°C2019: 21°C2020: 21°C2021: 23°C2022: 23°C2023: 28°C2024: 27°C2025: 24°C 2026 forecast: 20°C current forecast 20°C 198119902000201020202026
cooler yearstypical rangewarmer years2026 forecastcurrent forecast

From 1981 to 2025, the 5-11 Sept period averaged 21°C by day. The coolest year was 1996 (14°C) and the warmest was 2023 (28°C). The current forecast averages 20°C - lower than in 67% of historical years.

Historical reference: NASA POWER daily gridded data (MERRA-2), the 1991-2020 normal and a +/- 7-day calendar window. The typical range is the 20th-80th percentile. This is not a city weather-station reading and does not change the current forecast. NASA POWER Daily API.

Weather warnings - Ostrava

No active weather warnings for Ostrava (region: Moravskoslezský). The national weather service is not forecasting dangerous conditions.

14-day forecast - Ostrava

Ostrava - 14-day weather forecast infographic

Ostrava 30 & 45-day weather - long-range outlook

Next 16 days · forecast
20°
around 16° at night · days with rain: 10
Weeks 3-4 · avg for September
19°
around 9° at night · rain chance 50%
Weeks 5-7 · avg for October
14°
around 5° at night · rain chance 49%
The 30 & 45-day outlook for Ostrava: the next 16 days are a numerical forecast updated daily - on average 20° by day and 16° at night. Further out we rely on multi-year climate averages: around 19° in September, and about 14° in October. Forecasts beyond two weeks are indicative only.

Day-by-day forecast for Ostrava

Saturday5 September 2026
🌧️18°moderate rain
sunrise 06:07 · sunset 19:23 · night 17° · evening 20° · rain 4.76 mm · humidity 51% · wind 8 m/s · clouds 74%
Sunday6 September 2026
🌤️16°scattered clouds
sunrise 06:09 · sunset 19:21 · night 14° · evening 18° · rain 0.12 mm · humidity 43% · wind 6 m/s · clouds 31%
Monday7 September 2026
☁️21°overcast clouds
sunrise 06:10 · sunset 19:19 · night 15° · evening 22° · rain 13.29 mm · humidity 39% · wind 3 m/s · clouds 99%
Tuesday8 September 2026
☀️25°clear sky
sunrise 06:12 · sunset 19:17 · night 20° · evening 28° · rain 0.8 mm · humidity 40% · wind 5 m/s · clouds 6%
Wednesday9 September 2026
🌧️23°moderate rain
sunrise 06:13 · sunset 19:14 · night 17° · evening 23° · rain 7.21 mm · humidity 68% · wind 5 m/s · clouds 83%
Thursday10 September 2026
🌧️18°moderate rain
sunrise 06:15 · sunset 19:12 · night 16° · evening 20° · rain 17.79 mm · humidity 61% · wind 6 m/s · clouds 99%
Friday11 September 2026
☁️20°overcast clouds
sunrise 06:16 · sunset 19:10 · night 17° · evening 21° · rain 12.96 mm · humidity 46% · wind 6 m/s · clouds 100%
Saturday12 September 2026
🌧️18°light rain
sunrise 06:18 · sunset 19:08 · night 12° · evening 18° · rain 5.16 mm · humidity 52% · wind 8 m/s · clouds 6%
Sunday13 September 2026
🌧️17°light rain
sunrise 06:19 · sunset 19:06 · night 13° · evening 17° · rain 0.24 mm · humidity 44% · wind 8 m/s · clouds 33%
Monday14 September 2026
🌤️16°a few clouds
sunrise 06:21 · sunset 19:04 · night 11° · evening 18° · rain 0.9 mm · humidity 58% · wind 3 m/s · clouds 14%
Tuesday15 September 2026
🌤️19°scattered clouds
sunrise 06:22 · sunset 19:01 · night 15° · evening 23° · rain 1.05 mm · humidity 42% · wind 4 m/s · clouds 29%
Wednesday16 September 2026
☀️24°clear sky
sunrise 06:24 · sunset 18:59 · night 17° · evening 27° · rain 23.55 mm · humidity 32% · wind 5 m/s · clouds 6%
Thursday17 September 2026
☁️20°broken clouds
sunrise 06:25 · sunset 18:57 · night 16° · evening 23° · rain 1.71 mm · humidity 63% · wind 5 m/s · clouds 66%
Friday18 September 2026
☁️21°overcast clouds
sunrise 06:27 · sunset 18:55 · night 16° · evening 25° · rain 1.47 mm · humidity 53% · wind 2 m/s · clouds 90%
Saturday19 September 2026
☀️23°clear sky
sunrise 06:28 · sunset 18:53 · night 19° · evening 28° · humidity 47% · wind 3 m/s · clouds 5%
Sunday20 September 2026
🌤️25°a few clouds
sunrise 06:29 · sunset 18:50 · night 21° · evening 27° · humidity 44% · wind 4 m/s · clouds 13%

UV index in Ostrava - is it safe to sunbathe?

UV INDEX · 16-DAY FORECASTOstrava03681111+5.1UV MODERATEtoday, daily maxSeek shade around midday. SPF 30+, sunglasses and ahat for longer stays.Unprotected fair skin may burn in about 40 min5Sat5.095Sun6.094Mon7.095Tue8.095Wed9.094Thu10.094Fri11.094Sat12.093Sun13.092Mon14.093Tue15.093Wed16.091Thu17.094Fri18.092Sat19.094Sun20.090-2 low3-5 moderate6-7 high8-10 very high11+ extremeworld-prices.com · 2026-09-05
Today the UV index in Ostrava is 5 (moderate) - unprotected fair skin can burn in about 40 minutes. Seek shade around midday. SPF 30+, sunglasses and a hat for longer stays.

Pollen in Ostrava - info for allergy sufferers

PLANT POLLEN · 4-DAY FORECASTOstravaHighest pollen today: Ragweed16 grains/m³ · moderate leveltoday5.09tomorrow6.09Mon7.09Tue8.09Grasses2222Mugwort10152117Ragweed1692615nonelowmoderatehighvery highoff season: alder, birch, olive · values in grains/m³ (daily peak)pogodapodroze.pl · 2026-09-05
Today ragweed pollen is highest in Ostrava - about 16 grains/m³, moderate level. Most allergy sufferers should not feel strong symptoms. Pollen levels are a CAMS model forecast and are indicative.

Ostrava weather through the year

Ostrava - annual climate

Warmest, driest months on average: April, May, June, July.

Upcoming public holidays in Czech Republic: St. Wenceslas Day — 28 September · Independent Czechoslovak State Day — 28 October · Struggle for Freedom and Democracy Day — 17 November.

Nearby and related places

HavirovKatowicePragueLiberecBrnoKarlovy Vary

FAQ - Ostrava weather

What is the weather like in Ostrava today?
Today it is about 18° during the day and 17° at night, moderate rain.
How far ahead can I check the forecast for Ostrava?
This page shows a detailed 14-day forecast plus the long-term monthly climate, so you can plan both a short trip and a holiday months ahead.