Weather in Busan - 14-day forecast

Detailed weather forecast for Busan, South Korea: daytime and night temperature, rain, sunrise and sunset - today and for the next two weeks.

Forecast for the next days in Busan

today☀️ 28°💧 0.1 mm

Sun🌤️ 27°💧 0.1 mm

Mon🌤️ 27°💧 0.3 mm

Tue🌤️ 28°💧 2.5 mm

Wed☁️ 26°💧 0.2 mm

Thu☀️ 25°💧 0.6 mm

Fri☁️ 24°💧 66.5 mm

Sat☁️ 27°💧 131 mm

Forecast vs 1991-2020 climate normal

How does the current forecast compare with normal?

We compare the coming days with weather usually observed at this time of year.

NASA POWER

Tuesday 8 Sept in Busan, the forecast high is 28°C. Typical daytime temperatures at this time of year range from 24°C to 26°C, so it will be exceptionally warm. It is warmer than 97% of similar days.

Saturday 5 Sept

28°Cexceptionally warm

usually 24°C–27°C

warmer than 94% of similar days

night: near normal rain: typical rainfall wind: typical

Sunday 6 Sept

27°Cwarmer than usual

usually 24°C–27°C

warmer than 79% of similar days

night: near normal rain: typical rainfall wind: stronger than usual

Monday 7 Sept

27°Cwarmer than usual

usually 24°C–26°C

warmer than 82% of similar days

night: exceptionally cool rain: typical rainfall wind: typical

Tuesday 8 Sept

28°Cexceptionally warm

usually 24°C–26°C

warmer than 97% of similar days

night: near normal rain: typical rainfall wind: exceptionally light

Wednesday 9 Sept

26°Cwarmer than usual

usually 24°C–26°C

warmer than 74% of similar days

night: exceptionally cool rain: typical rainfall wind: stronger than usual

Thursday 10 Sept

25°Cnear normal

usually 24°C–26°C

night: near normal rain: typical rainfall wind: typical

Friday 11 Sept

24°Cnear normal

usually 24°C–26°C

night: exceptionally cool rain: exceptionally wet wind: typical

How warm was this week in previous years?

Each bar shows the average daily high during the same 7-day period in each year.

swipe to see more years →

cooler yearstypical rangewarmer years2026 forecastcurrent forecast

From 1981 to 2025, the 5-11 Sept period averaged 25°C by day. The coolest year was 1993 (22°C) and the warmest was 2024 (29°C). The current forecast averages 26°C - higher than in 82% of historical years.

Historical reference: NASA POWER daily gridded data (MERRA-2), the 1991-2020 normal and a +/- 7-day calendar window. The typical range is the 20th-80th percentile. This is not a city weather-station reading and does not change the current forecast. NASA POWER Daily API.

14-day forecast - Busan

Busan - 14-day weather forecast infographic

Busan 30 & 45-day weather - long-range outlook

Next 16 days · forecast

26°

around 23° at night · days with rain: 9

Weeks 3-4 · avg for September

27°

around 19° at night · rain chance 38%

Weeks 5-7 · avg for October

22°

around 14° at night · rain chance 27%

The 30 & 45-day outlook for Busan: the next 16 days are a numerical forecast updated daily - on average 26° by day and 23° at night. Further out we rely on multi-year climate averages: around 27° in September, and about 22° in October. Forecasts beyond two weeks are indicative only.

Day-by-day forecast for Busan

Saturday5 September 2026

☀️28°clear sky

sunrise 05:59 · sunset 18:46 · night 23° · evening 25° · rain 0.13 mm · humidity 53% · wind 9 m/s · clouds 1%

Sunday6 September 2026

🌤️27°scattered clouds

sunrise 05:59 · sunset 18:45 · night 24° · evening 25° · rain 0.12 mm · humidity 56% · wind 10 m/s · clouds 47%

Monday7 September 2026

🌤️27°scattered clouds

sunrise 06:00 · sunset 18:43 · night 21° · evening 24° · rain 0.28 mm · humidity 54% · wind 8 m/s · clouds 36%

Tuesday8 September 2026

🌤️28°scattered clouds

sunrise 06:01 · sunset 18:42 · night 24° · evening 26° · rain 2.49 mm · humidity 51% · wind 4 m/s · clouds 40%

Wednesday9 September 2026

☁️26°broken clouds

sunrise 06:01 · sunset 18:40 · night 21° · evening 23° · rain 0.15 mm · humidity 62% · wind 10 m/s · clouds 62%

Thursday10 September 2026

☀️25°clear sky

sunrise 06:02 · sunset 18:39 · night 23° · evening 23° · rain 0.63 mm · humidity 46% · wind 9 m/s · clouds 3%

Friday11 September 2026

☁️24°broken clouds

sunrise 06:03 · sunset 18:38 · night 21° · evening 24° · rain 66.45 mm · humidity 59% · wind 6 m/s · clouds 78%

Saturday12 September 2026

☁️27°broken clouds

sunrise 06:04 · sunset 18:36 · night 23° · evening 25° · rain 131.01 mm · humidity 47% · wind 6 m/s · clouds 83%

Sunday13 September 2026

☁️27°broken clouds

sunrise 06:04 · sunset 18:35 · night 24° · evening 26° · rain 4.83 mm · humidity 50% · wind 4 m/s · clouds 54%

Monday14 September 2026

☁️28°broken clouds

sunrise 06:05 · sunset 18:33 · night 25° · evening 27° · rain 13.32 mm · humidity 45% · wind 4 m/s · clouds 62%

Tuesday15 September 2026

☁️27°broken clouds

sunrise 06:06 · sunset 18:32 · night 24° · evening 25° · rain 7.59 mm · humidity 63% · wind 5 m/s · clouds 51%

Wednesday16 September 2026

🌧️27°light rain

sunrise 06:07 · sunset 18:30 · night 23° · evening 25° · rain 0.63 mm · humidity 59% · wind 3 m/s · clouds 100%

Thursday17 September 2026

🌤️28°a few clouds

sunrise 06:07 · sunset 18:29 · night 23° · evening 25° · rain 2.25 mm · humidity 48% · wind 6 m/s · clouds 17%

Friday18 September 2026

☁️27°overcast clouds

sunrise 06:08 · sunset 18:27 · night 23° · evening 25° · rain 6.48 mm · humidity 50% · wind 5 m/s · clouds 98%

Saturday19 September 2026

☁️28°overcast clouds

sunrise 06:09 · sunset 18:26 · night 24° · evening 26° · rain 0.12 mm · humidity 45% · wind 3 m/s · clouds 100%

Sunday20 September 2026

🌧️19°very heavy rain

sunrise 06:10 · sunset 18:25 · night 23° · evening 20° · rain 75.9 mm · humidity 95% · wind 4 m/s · clouds 100%

UV index in Busan - is it safe to sunbathe?

Today the UV index in Busan is 7 (high) - unprotected fair skin can burn in about 30 minutes. SPF 30-50, a hat and sunglasses are a must. Better stay in shade between 11:00 and 15:00.

Sea temperature - Busan

Water today

27°C

Week avg

26°C

Waves today

1.2 m

How's the water?

very warm

16-day sea temperature forecast:

5.09 27°C6.09 27°C7.09 27°C8.09 27°C9.09 26°C10.09 26°C11.09 26°C12.09 26°C13.09 25°C

Average sea temperature through the year:

Jan 13°CFeb 12°CMar 13°CApr 15°CMay 17°CJun 21°CJul 23°CAug 28°CSep 27°COct 23°CNov 18°CDec 14°C

Sea-surface temperature from marine models, updated daily. See also: where the sea is warmest right now.

Busan weather through the year

Warmest, driest months on average: April, May, June, July.

Upcoming public holidays in South Korea: Chuseok — 24 September · Chuseok — 25 September · Chuseok — 26 September.

Nearby and related places

ChangwonUlsanDaeguPohangAnyangGangneungSeoul

FAQ - Busan weather

What is the weather like in Busan today?

Today it is about 28° during the day and 23° at night, clear sky.

How far ahead can I check the forecast for Busan?

This page shows a detailed 14-day forecast plus the long-term monthly climate, so you can plan both a short trip and a holiday months ahead.