5-day weather forecast Prague 21-08-2026
Weather forecast Prague today 21.08.2026: patchy rain possible, temperature from 14 °C to 27 °C.
Precipitation probability 91%. Wind up to 9.5 m/s (gusts 16.25 m/s). Air humidity 33–95%, atmospheric pressure 753–758 mm Hg, UV index up to 5.4.
Weather Alerts
Hide alertsModerate Thunderstorm Impact
Risk of severe thunderstorms with torrential rain (around 40 mm in a short time), wind gusts up to 20 m/s (70 km/h) and hail up to 2 cm. Possible local property damage and complications, especially in the energy industry and transport. Potential for local flooding, especially of low-lying areas. Local wind damage to roofs, fences, soft shelters and trees. Local power outages. Some travel delays. Driving conditions difficult. Possible crop damage from small hail. Risk of fire caused by lightning strike. Risk of injury from flying or falling objects, and lightning strikes.
Beware of lightning strikes and flying or falling objects (especially branches). Seek shelter in a building equipped with lightning protection. Outdoors, take cover in dense forest or low vegetation; avoid water bodies, hilltops, metal structures, isolated trees, and rock overhangs. When driving reduce speed. Observe weather warnings, weather radar (www.chmi.cz or mobile apps) and local flood risk https://produkty.chmi.cz/ffi.
5 days at a glance — tap a day to open it
Sunrise 06:01
Sunset 20:09
Sunset 20:09
First Quarter69% illuminated
Moonrise 16:51 · Moonset 23:47
Moonrise 16:51 · Moonset 23:47
Chart
Table
Fri, Aug 21, 2026
| Temperature | Rain chance | Cloud cover | Humidity | Pressure | Wind | UV Index | ||
|---|---|---|---|---|---|---|---|---|
| 00:00 |  Patchy rain possible | 18 °C | 25% (0.01 mm/hr) | 100% | 80% | 758 mm Hg | SW 217° 3.39 (7.31) m/s | 0 |
| 01:00 | Patchy rain possible | 19 °C | 27% (0.02 mm/hr) | 100% | 82% | 758 mm Hg | WSW 241° 2.89 (6.42) m/s | 0 |
| 02:00 | Patchy rain possible | 19 °C | 27% (0.01 mm/hr) | 100% | 83% | 758 mm Hg | SW 232° 2.5 (5.19) m/s | 0 |
| 03:00 | Patchy rain possible | 19 °C | 32% (0.08 mm/hr) | 100% | 82% | 758 mm Hg | WSW 237° 2.39 (4.61) m/s | 0 |
| 04:00 | Patchy rain possible | 19 °C | 35% (0.15 mm/hr) | 100% | 80% | 758 mm Hg | SW 228° 1.89 (3.22) m/s | 0 |
| 05:00 |  Overcast | 19 °C | 24% | 100% | 80% | 758 mm Hg | SW 230° 1.69 (2.61) m/s | 0 |
| 06:00 |  Light rain shower | 19 °C | 65% (0.81 mm/hr) | 99% | 84% | 758 mm Hg | SSW 203° 2.19 (3.61) m/s | 0 |
| 07:00 |  Light rain shower | 19 °C | 34% (0.17 mm/hr) | 76% | 85% | 758 mm Hg | SSW 198° 2.31 (6.19) m/s | 0.1 |
| 08:00 |  Patchy rain possible | 19 °C | 25% (0.11 mm/hr) | 72% | 77% | 758 mm Hg | SSW 206° 2.69 (7.42) m/s | 0.6 |
| 09:00 | Patchy rain possible | 20 °C | 25% (0.2 mm/hr) | 74% | 69% | 758 mm Hg | SW 230° 3.69 (6.31) m/s | 1.6 |
| 10:00 | Patchy rain possible | 21 °C | 17% (0.06 mm/hr) | 70% | 63% | 758 mm Hg | SW 230° 3.39 (4.81) m/s | 2.9 |
| 11:00 | Patchy rain possible | 23 °C | 18% (0.13 mm/hr) | 82% | 56% | 758 mm Hg | SW 227° 2.81 (3.53) m/s | 4.4 |
| 12:00 | Patchy rain possible | 24 °C | 17% (0.1 mm/hr) | 75% | 48% | 758 mm Hg | SW 220° 2.39 (3.5) m/s | 5.4 |
| 13:00 |  Overcast | 26 °C | 10% | 100% | 38% | 757 mm Hg | SSW 203° 1.61 (3.22) m/s | 5.2 |
| 14:00 | Overcast | 27 °C | 10% | 100% | 34% | 756 mm Hg | S 187° 1.5 (3.11) m/s | 4.1 |
| 15:00 | Overcast | 27 °C | 9% | 100% | 33% | 755 mm Hg | SE 144° 1.81 (2.83) m/s | 1.8 |
| 16:00 | Patchy rain possible | 25 °C | 13% (0.03 mm/hr) | 100% | 47% | 755 mm Hg | NE 53° 3.31 (3.81) m/s | 0.8 |
| 17:00 | Light rain shower | 22 °C | 25% (0.15 mm/hr) | 100% | 60% | 754 mm Hg | NE 39° 3.19 (5.44) m/s | 0.5 |
| 18:00 | Light rain shower | 21 °C | 51% (0.84 mm/hr) | 100% | 62% | 755 mm Hg | WNW 299° 3.5 (4.89) m/s | 0.2 |
| 19:00 | Light rain shower | 17 °C | 80% (1.8 mm/hr) | 100% | 94% | 754 mm Hg | N 357° 3.69 (6.72) m/s | 0.1 |
| 20:00 | Light rain shower | 16 °C | 83% (2.22 mm/hr) | 100% | 95% | 753 mm Hg | N 349° 6.89 (11.33) m/s | 0 |
| 21:00 |  Moderate or heavy rain shower | 15 °C | 88% (4.21 mm/hr) | 100% | 93% | 754 mm Hg | NNW 346° 9.5 (16.25) m/s | 0 |
| 22:00 |  Moderate rain | 14 °C | 91% (6.58 mm/hr) | 100% | 93% | 755 mm Hg | NW 315° 8.31 (15.42) m/s | 0 |
| 23:00 | Light rain shower | 14 °C | 76% (1.16 mm/hr) | 100% | 92% | 757 mm Hg | WNW 298° 8.69 (14.5) m/s | 0 |
Fri, Aug 21, 2026
Frequently asked questions about the 5-day weather in Prague
What will the weather be like in Prague over the next 5 days?
Over the next 5 days in Prague the temperature is expected to range from about 12 to 27 °C. See the detailed hourly forecast for each of the 5 days in the charts above.
On which of the next 5 days will it rain in Prague?
The chance of rain in Prague over the next 5 days reaches 91%. Check the 5-day precipitation chart above to see exactly which days and hours bring rain.
How accurate is the 5-day weather forecast for Prague?
A 5-day forecast is fairly reliable: the first 2–3 days are usually very accurate, while days 4–5 may be refined. The data is updated several times a day, so check back before important plans.
Which of the next 5 days in Prague will be the warmest and which the coolest?
Over the next 5 days the temperature in Prague ranges from about 12 to 27 °C. Compare the warmest and coolest day on the temperature chart above.
Will it be windy in Prague over the next 5 days?
Over the next 5 days the wind in Prague picks up to 10 m/s. The windiest days are easy to spot on the wind chart above.
Which day of the week in Prague is best for a walk or a trip?
For a walk or a trip, pick the days with the lowest chance of rain (up to 91%) and light wind — easy to compare on the 5-day charts above.
How can I best use the 5-day forecast for Prague?
The first 2–3 days are reliable enough for firm decisions, while days 4–5 are a guide that sharpens as they approach. The forecast is updated several times a day, so check again before important plans.
Prague on the map
Data Sources & Methodology
Our weather forecasts are powered by a professional weather data provider that aggregates data from national weather services, satellite observations, radar networks, and over 80,000 weather stations worldwide. Forecast data is updated multiple times daily. We convert raw data into clear summaries — wind speed in m/s, pressure in mmHg — so you can plan your day with confidence.