5-day weather forecast Seoul 21-05-2026
Weather forecast Seoul Thursday, May 21 21.05.2026: light drizzle, temperature from 15 °C to 17 °C.
Precipitation probability 100%. Wind up to 6 m/s (gusts 9.25 m/s). Air humidity 78–90%, atmospheric pressure 755–758 mm Hg, UV index up to 7.7.
Sunrise 05:19
Sunset 19:40
Sunset 19:40
Waxing Crescent24% illuminated
Moonrise 09:26 · Moonset below the horizon
Moonrise 09:26 · Moonset below the horizon
Chart
Table
| Temperature | Rain chance | Cloud cover | Humidity | Pressure | Wind | UV Index | ||
|---|---|---|---|---|---|---|---|---|
| 00:00 |  Light drizzle | 15 °C | 100% (0.62 mm/hr) | 100% | 89% | 758 mm Hg | ENE 64° 3.31 (4.86) m/s | 0 |
| 01:00 | Light drizzle | 15 °C | 100% (0.18 mm/hr) | 99% | 88% | 758 mm Hg | ENE 75° 4.11 (6.17) m/s | 0 |
| 02:00 | Light drizzle | 16 °C | 100% (0.31 mm/hr) | 100% | 86% | 757 mm Hg | ENE 77° 4.11 (6.19) m/s | 0 |
| 03:00 |  Light rain | 15 °C | 100% (1.13 mm/hr) | 93% | 88% | 757 mm Hg | ENE 71° 3.69 (5.58) m/s | 0 |
| 04:00 | Light drizzle | 15 °C | 100% (0.44 mm/hr) | 90% | 88% | 756 mm Hg | ENE 70° 4.61 (6.97) m/s | 0 |
| 05:00 | Light drizzle | 15 °C | 100% (0.44 mm/hr) | 87% | 88% | 756 mm Hg | ENE 69° 4.19 (6.42) m/s | 0 |
| 06:00 |  Patchy rain possible | 15 °C | 83% (0.05 mm/hr) | 70% | 86% | 756 mm Hg | ENE 71° 5 (7.81) m/s | 0 |
| 07:00 |  Light drizzle | 16 °C | 100% (0.29 mm/hr) | 84% | 84% | 756 mm Hg | ENE 72° 4.81 (7.44) m/s | 0.4 |
| 08:00 |  Patchy light drizzle | 16 °C | 100% (0.55 mm/hr) | 65% | 83% | 757 mm Hg | ENE 72° 4 (6.25) m/s | 1.1 |
| 09:00 | Patchy light drizzle | 16 °C | 100% (0.37 mm/hr) | 57% | 85% | 756 mm Hg | ENE 63° 4.89 (7.72) m/s | 2.5 |
| 10:00 | Patchy rain possible | 17 °C | 82% (0.01 mm/hr) | 72% | 80% | 756 mm Hg | ENE 73° 6 (8.97) m/s | 4.9 |
| 11:00 | Patchy rain possible | 17 °C | 71% (0.03 mm/hr) | 83% | 78% | 755 mm Hg | ENE 73° 6 (9.25) m/s | 6.7 |
| 12:00 |  Moderate rain | 17 °C | 100% (2.83 mm/hr) | 100% | 79% | 756 mm Hg | ENE 68° 5.39 (7.94) m/s | 7.7 |
| 13:00 |  Light rain | 16 °C | 100% (2.47 mm/hr) | 100% | 88% | 755 mm Hg | ENE 68° 5.81 (8.75) m/s | 5 |
| 14:00 | Light drizzle | 16 °C | 100% (0.49 mm/hr) | 100% | 89% | 755 mm Hg | ENE 61° 5.5 (8.03) m/s | 3.4 |
| 15:00 | Light rain | 15 °C | 100% (1.56 mm/hr) | 100% | 89% | 756 mm Hg | ENE 57° 5.39 (7.89) m/s | 3.6 |
| 16:00 | Light rain | 15 °C | 100% (1.63 mm/hr) | 88% | 89% | 756 mm Hg | NE 55° 5.19 (7.75) m/s | 1 |
| 17:00 | Light rain | 15 °C | 100% (1.15 mm/hr) | 95% | 90% | 757 mm Hg | NE 49° 4 (5.89) m/s | 1.3 |
| 18:00 | Light drizzle | 15 °C | 100% (0.54 mm/hr) | 83% | 90% | 757 mm Hg | NE 51° 3.69 (5.53) m/s | 0.5 |
| 19:00 | Patchy light drizzle | 15 °C | 100% (0.21 mm/hr) | 72% | 89% | 757 mm Hg | ENE 58° 3.81 (5.89) m/s | 0.1 |
| 20:00 |  Patchy rain possible | 15 °C | 79% (0.02 mm/hr) | 100% | 86% | 757 mm Hg | ENE 67° 3.69 (5.81) m/s | 0 |
| 21:00 |  Overcast | 15 °C | 0% | 100% | 83% | 758 mm Hg | ENE 64° 3.31 (5.28) m/s | 0 |
| 22:00 | Overcast | 15 °C | 0% | 100% | 82% | 758 mm Hg | ENE 58° 3.11 (5.03) m/s | 0 |
| 23:00 | Overcast | 15 °C | 0% | 100% | 81% | 758 mm Hg | ENE 60° 3.31 (5.22) m/s | 0 |
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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.