5-day weather forecast Seoul Oct 20, 2026
19°Weather forecast Seoul Tuesday Oct 20, 2026: overcast, temperature from 16 °C to 19 °C.
Precipitation probability 11%. Wind up to 1.61 m/s (gusts 3.69 m/s). Air humidity 39–59%, atmospheric pressure 761–764 mm Hg, UV index up to 1.6.
5 days at a glance — tap a day to open it
Sunrise 06:45
Sunset 17:48
Sunset 17:48
Waxing Gibbous77% illuminated
Moonrise 14:55 · Moonset 00:37
Moonrise 14:55 · Moonset 00:37
Chart
Table
Tue, Oct 20, 2026
| Time | Weather | Temperature | Rain chance | Cloud cover | Humidity | Pressure | Wind | UV Index |
|---|---|---|---|---|---|---|---|---|
| 00:00 |  Overcast | 18 °C | 10% | 100% | 39% | 764 mm Hg | NE 46° 0.89 (0.92) m/s | 0 |
| 01:00 | Overcast | 18 °C | 10% | 100% | 41% | 764 mm Hg | ENE 73° 0.69 (0.75) m/s | 0 |
| 02:00 | Overcast | 17 °C | 10% | 100% | 41% | 764 mm Hg | E 85° 0.31 (0.5) m/s | 0 |
| 03:00 | Overcast | 17 °C | 10% | 100% | 42% | 764 mm Hg | NNE 20° 1 (1.33) m/s | 0 |
| 04:00 | Overcast | 17 °C | 10% | 100% | 43% | 764 mm Hg | E 79° 0.89 (1.22) m/s | 0 |
| 05:00 | Overcast | 17 °C | 11% | 100% | 44% | 764 mm Hg | SE 125° 0.61 (0.89) m/s | 0 |
| 06:00 | Overcast | 17 °C | 11% | 100% | 45% | 764 mm Hg | E 79° 0.5 (0.72) m/s | 0 |
| 07:00 | Overcast | 17 °C | 11% | 100% | 46% | 763 mm Hg | E 85° 1 (1.31) m/s | 0 |
| 08:00 |  Smoky haze | 17 °C | 10% | 97% | 46% | 763 mm Hg | E 85° 1.11 (1.5) m/s | 0.1 |
| 09:00 | Overcast | 17 °C | 11% | 100% | 45% | 764 mm Hg | ESE 118° 0.39 (0.92) m/s | 0.4 |
| 10:00 | Overcast | 18 °C | 10% | 100% | 43% | 764 mm Hg | SSE 151° 0.61 (1.19) m/s | 0.7 |
| 11:00 | Overcast | 18 °C | 10% | 100% | 42% | 764 mm Hg | E 93° 0.89 (1.22) m/s | 1.3 |
| 12:00 | Overcast | 18 °C | 10% | 100% | 41% | 764 mm Hg | SSW 195° 0.31 (1) m/s | 1.6 |
| 13:00 | Overcast | 18 °C | 10% | 100% | 41% | 762 mm Hg | E 80° 0.69 (1) m/s | 0.9 |
| 14:00 | Overcast | 19 °C | 10% | 100% | 41% | 761 mm Hg | ENE 76° 0.5 (0.81) m/s | 1.5 |
| 15:00 | Overcast | 18 °C | 10% | 100% | 42% | 761 mm Hg | N 350° 0.11 (0.39) m/s | 0.9 |
| 16:00 | Overcast | 18 °C | 10% | 99% | 42% | 761 mm Hg | ENE 69° 0.61 (0.61) m/s | 0.7 |
| 17:00 | Overcast | 18 °C | 10% | 98% | 43% | 761 mm Hg | ESE 109° 0.69 (0.81) m/s | 0.3 |
| 18:00 | Overcast | 18 °C | 10% | 95% | 46% | 761 mm Hg | WSW 238° 0.5 (0.69) m/s | 0 |
| 19:00 |  Partly cloudy | 17 °C | 5% | 50% | 47% | 761 mm Hg | WNW 283° 1.11 (1.72) m/s | 0 |
| 20:00 |  Clear | 17 °C | 3% | 20% | 48% | 761 mm Hg | WNW 284° 1.61 (3.5) m/s | 0 |
| 21:00 | Clear | 17 °C | 2% | 0% | 53% | 761 mm Hg | WNW 287° 1.19 (3.22) m/s | 0 |
| 22:00 |  Cloudy | 16 °C | 10% | 76% | 57% | 761 mm Hg | W 276° 1.31 (3.69) m/s | 0 |
| 23:00 | Clear | 16 °C | 4% | 4% | 59% | 761 mm Hg | WSW 246° 1 (1.61) m/s | 0 |
Tue, Oct 20, 2026
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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.