Koesan weather
At 4:00 AM local time it was partly cloudy and 6°C (43°F). Real rain for 6 hours (15.9 mm total) — consider moving outdoor plans. Best months for weather: Apr–Jun, Sep–Oct. Koesan sits 115 m (377 ft) above sea level, which keeps it cooler than the coast. Below: today's sky, the hour-by-hour rain chance and the 16-day forecast for Koesan, North Chungcheong, South Korea.
Current conditions
- Clouds
- 62%
- Chance of rain
- 0%
- Rain
- 0.0 mm/h
Hourly Forecast
Real rain for 6 hours (15.9 mm total) — consider moving outdoor plans
Daily Forecast
Best Time to Visit
Peak season Apr–Jun, Sep–OctOff season Jul–Aug, Dec–Feb
About Koesan weather
Is it raining in Koesan right now?
No. It’s partly cloudy and 6° right now. Real rain for 6 hours (15.9 mm total) — consider moving outdoor plans.
What’s the weather like in Koesan this week?
Over the next 7 days, expect highs of 7–17° and lows of -3–9°. Rain is likely on 3 of 7 days (Sunday, Monday, Thursday). The driest day looks like Saturday.
Has it been raining in Koesan lately?
Barely. The past 7 days were mostly dry, with 0.0 mm of rain in total.
What should I pack for Koesan?
For the coming week, bring an umbrella or rain jacket and a warm winter coat.
Koesan weather by month
When is the best time to visit Koesan?
Based on weather alone, the best time to visit Koesan is Apr–Jun, Sep–Oct, according to NASA's 2001–2025 climate averages. Jul–Aug, Dec–Feb tends to be the least pleasant. Average highs run from 1°C (33°F) in January to 29°C (84°F) in August.
What is the rainiest month in Koesan?
July is the wettest month, with about 341 mm (13.4 in) of rain on average. January is the driest, with about 21 mm (0.8 in).
What is the hottest month in Koesan?
August is the warmest, with average highs of 29°C (84°F) and lows of 21°C (69°F). January is the coolest, with highs of 1°C (33°F) and lows of -9°C (15°F).
Does Koesan have a rainy season?
Yes. Jul–Aug is the rainy season (150 mm or more a month), while Oct–Mar is usually dry (under 60 mm).
Sources: 2001–2025 monthly averages from NASA POWER (MERRA-2 reanalysis), forecast and current conditions from Open-Meteo. Page updated . How we rate months