Today, 2026-09-23: Partly cloudy, 27°C / 17°C, rain chance 8%. Fine dust PM2.5 23 µg/m³ (Moderate), PM10 25 µg/m³. What to wear: warm — short sleeves; a light layer for evenings.
7-day forecast
| Day | Sky | High / Low | Rain chance | Wind |
|---|---|---|---|---|
| Wed 09/23 | Partly cloudy | 27° / 17° | 8% | 6 km/h |
| Thu 09/24 | Overcast | 25° / 17° | 0% | 5 km/h |
| Fri 09/25 | Overcast | 22° / 18° | 73% | 5 km/h |
| Sat 09/26 | Overcast | 29° / 18° | 45% | 11 km/h |
| Sun 09/27 | Overcast | 29° / 19° | 10% | 13 km/h |
| Mon 09/28 | Light drizzle | 27° / 20° | 22% | 15 km/h |
| Tue 09/29 | Light drizzle | 25° / 16° | 15% | 13 km/h |
Seasons, festivals and what’s on
- Music Bank Global Festival 2026 Japan lineup: 8 acts and December dates at Tokyo National Stadium
- Bungeoppang Korean Street Food: Cost, Where to Buy (2026)
- Gyeongbokgung Night Viewing 2026 Tickets: 3,000 KRW, Foreigner On-Site Buy
- Andong Maskdance Festival 2026: dates, tickets, travel
- Made in Korea Season 2 cast: Woo Do-hwan, new faces, Sep 9
- BTS iHeart Radio Music Festival 2026 where to watch replay setlist
- Seoraksan fall foliage 2026 dates: first color Sept 27–30
- Made in Korea Season 2 where to watch: Disney+ vs Hulu
FAQ
What is the weather in Seoul today?
2026-09-23: Partly cloudy, high 27°C, low 17°C, chance of rain 8%. Fine dust (PM2.5) is around 23 µg/m³ — Moderate on the Korean scale.
What should I wear in Seoul this week?
Highs run 22–29°C: warm — short sleeves; a light layer for evenings. Pack a compact umbrella — rain is likely on Fri.
Will it rain in Seoul this week?
Rain is likely (50% or higher) on Fri 09/25.
How accurate is this forecast?
It is the Open-Meteo model forecast for central Seoul (37.57°N, 126.98°E), refreshed every morning Korea time. Beyond three days, treat it as a trend rather than a promise; check again the day before you travel.
Source: Open-Meteo forecast and air-quality models for central Seoul · updated 2026-09-23