5-day weather forecast Prague Sep 18, 2026
20°Weather forecast Prague Friday Sep 18, 2026: overcast, temperature from 13 °C to 20 °C.
Precipitation probability 18%. Wind up to 4.11 m/s (gusts 5.33 m/s). Air humidity 38–68%, atmospheric pressure 761–765 mm Hg, UV index up to 3.8.
5 days at a glance — tap a day to open it
Sunrise 06:42
Sunset 19:09
Sunset 19:09
First Quarter53% illuminated
Moonrise 15:38 · Moonset 22:34
Moonrise 15:38 · Moonset 22:34
Chart
Table
| Time | Weather | Temperature | Rain chance | Cloud cover | Humidity | Pressure | Wind | UV Index |
|---|---|---|---|---|---|---|---|---|
| 00:00 |  Overcast | 15 °C | 14% | 100% | 59% | 762 mm Hg | SSW 200° 2.5 (4.11) m/s | 0 |
| 01:00 | Overcast | 15 °C | 15% | 100% | 61% | 762 mm Hg | SSW 201° 2.31 (3.42) m/s | 0 |
| 02:00 | Overcast | 14 °C | 16% | 100% | 64% | 762 mm Hg | SSW 200° 2.39 (3.5) m/s | 0 |
| 03:00 | Overcast | 14 °C | 17% | 100% | 66% | 762 mm Hg | SSW 200° 2.5 (3.61) m/s | 0 |
| 04:00 | Overcast | 14 °C | 17% | 100% | 66% | 761 mm Hg | SSW 200° 2.39 (3.39) m/s | 0 |
| 05:00 | Overcast | 14 °C | 17% | 100% | 66% | 761 mm Hg | SSW 197° 2.31 (3.31) m/s | 0 |
| 06:00 | Overcast | 13 °C | 17% | 100% | 68% | 762 mm Hg | S 191° 2.31 (3.31) m/s | 0 |
| 07:00 | Overcast | 13 °C | 18% | 100% | 68% | 762 mm Hg | SSW 195° 2.5 (4) m/s | 0 |
| 08:00 | Overcast | 14 °C | 16% | 97% | 65% | 762 mm Hg | S 189° 2.39 (4.61) m/s | 0.2 |
| 09:00 | Overcast | 14 °C | 12% | 90% | 58% | 762 mm Hg | SSW 213° 2.81 (5.11) m/s | 0.8 |
| 10:00 | Overcast | 16 °C | 12% | 98% | 52% | 763 mm Hg | SW 225° 2.89 (4.92) m/s | 1.7 |
| 11:00 | Overcast | 18 °C | 11% | 100% | 47% | 763 mm Hg | WSW 248° 3.19 (4.92) m/s | 2.7 |
| 12:00 | Overcast | 19 °C | 10% | 100% | 43% | 763 mm Hg | WSW 248° 3.39 (4.92) m/s | 3.5 |
| 13:00 | Overcast | 20 °C | 10% | 100% | 40% | 762 mm Hg | WSW 252° 3.69 (5) m/s | 3.8 |
| 14:00 | Overcast | 20 °C | 10% | 100% | 39% | 763 mm Hg | WSW 256° 4.11 (5.31) m/s | 3.4 |
| 15:00 | Overcast | 20 °C | 10% | 99% | 38% | 762 mm Hg | WSW 253° 4.11 (5.33) m/s | 2.6 |
| 16:00 | Overcast | 20 °C | 10% | 100% | 38% | 762 mm Hg | WSW 249° 3.81 (5.03) m/s | 1.8 |
| 17:00 | Overcast | 20 °C | 10% | 100% | 40% | 762 mm Hg | WSW 246° 3.31 (4.69) m/s | 0.8 |
| 18:00 |  Cloudy | 19 °C | 9% | 85% | 46% | 763 mm Hg | SW 235° 2.39 (4.61) m/s | 0.3 |
| 19:00 |  Sunny | 19 °C | 2% | 6% | 52% | 763 mm Hg | SW 222° 2.31 (3.42) m/s | 0 |
| 20:00 |  Cloudy | 18 °C | 10% | 79% | 56% | 764 mm Hg | SW 221° 2.31 (3.44) m/s | 0 |
| 21:00 | Overcast | 17 °C | 13% | 91% | 58% | 764 mm Hg | SW 227° 2.19 (3.53) m/s | 0 |
| 22:00 | Overcast | 17 °C | 14% | 96% | 61% | 764 mm Hg | WSW 238° 2 (3.31) m/s | 0 |
| 23:00 | Cloudy | 16 °C | 12% | 80% | 64% | 765 mm Hg | WSW 244° 1.5 (1.81) m/s | 0 |
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.