AI-generatedBusan at a glance
- Best time
- Apr – Jun, Sep – Oct
- Warmest month
- Aug · 28°
- Warmest sea
- Aug · 26.5°
- Sunshine a year
- 2,370 h
- Rain a year
- 1,314 mm
- Climate
- Temperate
- Time zone
- UTC+9
- Elevation
- 15 m
Climate in Busan
Busan has a temperate climate with warm summers and cool winters. August is the warmest month with average highs of 28 °C, while January is the coolest at 7 °C. With around 2,370 hours of sunshine a year, Busan is sunny; May is the sunniest month with 7.4 hours a day.
Holiday weather through the year
Weather in October
Holiday weather in October
Excellent
Best time to visit: April – June, September – October
October is the peak of the typhoon season
Good forSightseeing & walks
Keep in mindStorm season
A typical day in October
- Morning, 08:00: about 17°
- Midday, 13:00: about 20°
- Afternoon, 16:00: about 20°
- Evening, 20:00: about 18°
- Night, 23:00: about 17°
06:2917:50
Pleasant evenings; a light layer can help.
Estimated from the average high and low: coolest around sunrise, warmest in mid-afternoon.
Light for photos in October
- Golden hour
- Morning 06:13–07:03 · evening 17:16–18:06
- Blue hour
- Morning 06:03–06:13 · evening 18:06–18:16
Golden hour: the sun between 4° below and 6° above the horizon; blue hour: 6° to 4° below it. Times for the 15th of the month; mountains and clouds shift the light.
What is the weather like in Busan in October?
In October, Busan is mild: daytime highs average 21 °C, and nights cool down to about 15 °C. The sea averages 22.2 °C – refreshing for a swim. The sun shines for around 7 hours a day. Rain falls on about 5 days, adding up to 77 mm. All in all, October is an excellent month for a holiday in Busan.
More details for October
- Daylight
- 11 h 22 min06:29 – 17:50
- UV index
- 5 · moderateclear sky, noon (estimate)All months
- Muggy days
- 2 daysdew point 18 °C or moreAll months
- Wind
- 17 km/haverage daily peakAll months
- Cloud cover
- 46 %on averageAll months
- Hot days
- 0 days30 °C or moreAll months
- Time zone
- UTC+9Asia/Seoul
How the score comes together
- Temperatureweight 50 %100 %
- Sunshineweight 20 %63 %
- Few rainy daysweight 30 %91 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in October
- Swimwear
- Sunscreen
- A jumper for the evenings
Sea temperature in Busan
Monthly sea surface temperature with the range of cooler and warmer years.
8 in 10 years: 21.1 – 23.1 °C
Swimming season: Jun – Oct
- cold
- fresh
- refreshing
- pleasant
- warm
- very warm
The sea temperature in Busan ranges from 13.7 °C in February to 26.5 °C in August. It is warm enough for a comfortable swim (20 °C and more) from June to October.
From September to March the sea is even warmer than the afternoon air. The sea temperature varies from year to year: in August, eight out of ten years were between 25.0 and 27.6 °C.
| Month | Average | Cool year | Warm year | Feels |
|---|---|---|---|---|
| JanuaryJan | 14.7° | 14.0° | 15.4° | cold |
| FebruaryFeb | 13.7° | 12.8° | 14.4° | cold |
| MarchMar | 13.8° | 12.9° | 14.8° | cold |
| AprilApr | 14.8° | 13.8° | 15.9° | cold |
| MayMay | 16.8° | 15.6° | 17.7° | cold |
| JuneJun | 20.3° | 19.5° | 21.1° | refreshing |
| JulyJul | 23.5° | 21.9° | 25.0° | pleasant |
| AugustAug | 26.5° | 25.0° | 27.6° | warm |
| SeptemberSep | 24.9° | 24.1° | 26.0° | pleasant |
| OctoberOct | 22.2° | 21.1° | 23.1° | refreshing |
| NovemberNov | 19.5° | 18.8° | 20.5° | fresh |
| DecemberDec | 16.9° | 16.1° | 17.4° | cold |
Sunshine hours in Busan
Average hours of bright sunshine per day, next to the length of the day. Tap a month to select it.
In October, the sun shines for about 6.8 of 11.4 hours of daylight in Busan, 60 % of the day.
Sunshine hours: measured at the weather station 0 km away, averages 1991–2020 (WMO climate normals). Daylight is the time from sunrise to sunset on the 15th of the month.
UV index in Busan
How strong the sun is at noon, month by month, and how quickly unprotected skin burns.
- Clear-sky UV in October
- 5 · moderateAround midday seek shade; use sunscreen, a hat and sunglasses.
The sun is strongest in June (UV 11).
Minutes until sunburn in October
- Very fair skin
- about 25 min
- Fair skin
- about 30 min
- Light brown skin
- about 45 min
- Olive skin
- about 60 min
Rough guide for unprotected skin at noon under a clear sky; clouds lengthen it, water, sand and snow shorten it. Sunscreen extends the time only partly.
Monthly values: clear-sky noon estimate from the sun's angle, ozone and altitude. UV today: Open-Meteo forecast.
Rain in Busan: rainy days and rainfall
A rainy day is a day with at least 1 mm of rain or snow; the amount is what falls in the whole month. Tap a month to select it.
In October, Busan has about 5 rainy days with 77 mm of rain in total.
Wind and clouds in Busan
How breezy and how cloudy Busan is through the year. Tap a month to select it on the whole page.
Wind
Typical daily peak of the wind in km/h: what the afternoon breeze usually reaches, not the gusts.
In October, the wind in Busan typically peaks at 17 km/h during the day: Beaufort 3, light breeze.
Breezy months for windsurfing and kiting
From Beaufort 4 (20 km/h) the daily breeze is usually enough for windsurfing and often for kiting: Mar – Apr.
Clouds
Average share of the sky covered by cloud, day and night.
In October, cloud covers on average 46 % of the sky over Busan: variable cloud, with about 6.8 hours of sunshine a day.
Wind: mean daily maximum of the hourly wind 10 m above ground (ERA5, 1996–2025). Gusts are stronger, and the model grid of about 28 km smooths out local effects such as capes and valley winds. Clouds: mean total cloud cover of all layers over day and night (ERA5, 1996–2025). Thin high cloud counts as cover even when the sun still shines through.
Heat and humidity in Busan
How often the day gets hot in Busan (30 °C and more), and in which months heat and humidity come together. Tap a month to select it.
Heat calendar
- pleasant
- some hot or muggy days
- often muggy
- often hot
- hot and muggy
In October, Busan has about 0 hot days, with an average daytime high of 21 °C: pleasant. Heat plays no part this month.
Hot days reach at least 30 °C; a month counts as muggy when the mean dew point reaches 18 °C on at least 15 days. Averages from ERA5 and ERA5-Land, 1996–2025. Muggy nights through the year
Climate through the year
Long-term monthly averages. Tap a month to see its details.
Nights and sleep in Busan
How warm the nights get in each month, from the mean night-time low. Tap a month for details.
- Cold 0–8°
- Cool 8–15°
- Pleasant 15–20°
- Warm 20–24°
- Hot 24° and more
- muggy month (10+ muggy days)
PleasantOctober: nights around 15°. Ideal for sleeping, often with the window open. Muggy on about 2 days (dew point 18 °C or more).
The coolest nights are in January (1°), the warmest in August (24°). Tropical nights of 20 °C and more are the rule from July to September; then air conditioning or a fan helps you sleep. Nights are pleasant for sleeping (15 to 20 °C) in June and in October. Nights fall below 8 °C on average from December to March, so the room should be heated. It is muggy (dew point 18 °C or more) on about 93 days a year, mostly from June to September.
Temperatures through the year
Average daytime high, night-time low and sea temperature per month.
| Month | Score | Day | Night | Sea | Sun | Rain days | Rain mm |
|---|---|---|---|---|---|---|---|
| JanuaryJan | 42 | 7° | 1° | 14.7° | 6.6 h | 4 | 29 |
| FebruaryFeb | 43 | 9° | 2° | 13.7° | 6.7 h | 5 | 42 |
| MarchMar | 55 | 12° | 6° | 13.8° | 6.5 h | 7 | 80 |
| AprilApr | 76 | 16° | 10° | 14.8° | 7.1 h | 8 | 110 |
| MayMay | 86 | 20° | 14° | 16.8° | 7.4 h | 8 | 121 |
| JuneJun | 78 | 23° | 19° | 20.3° | 6.0 h | 10 | 167 |
| JulyJul | 67 | 26° | 23° | 23.5° | 5.6 h | 14 | 234 |
| AugustAug | 64 | 28° | 24° | 26.5° | 6.4 h | 14 | 202 |
| SeptemberSep | 76 | 25° | 21° | 24.9° | 5.8 h | 10 | 174 |
| OctoberOct | 90 | 21° | 15° | 22.2° | 6.8 h | 5 | 77 |
| NovemberNov | 74 | 15° | 9° | 19.5° | 6.5 h | 5 | 52 |
| DecemberDec | 46 | 9° | 3° | 16.9° | 6.6 h | 3 | 27 |
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences
35.10° N, 129.03° E · 15 m · Asia/Seoul
Best time to visit Busan
The best time to visit Busan is from April to June and from September to October. For a beach holiday with the sea above 21 °C, go in September. For sightseeing, day trips and hiking, conditions are most comfortable from April to June and from September to October. Rain is most frequent from July to August; the wettest month is July with 234 mm.
Busan through the seasons
How the weather changes over the seasons, with averages for each.
Busan in spring
Mar – May
Good
- 12–20 °C by day
- Sea 15 °C
- 7 h of sun a day
- 23 rainy days in all
Busan in summer
Jun – Aug
Good
- 23–28 °C by day
- Sea 23 °C
- 6 h of sun a day
- 38 rainy days in all
Busan in autumn
Sep – Nov
Excellent
- 15–25 °C by day
- Sea 22 °C
- 6 h of sun a day
- 21 rainy days in all
Busan in winter
Dec – Feb
Fair
- 7–9 °C by day
- Sea 15 °C
- 7 h of sun a day
- 12 rainy days in all
Find your perfect month
Tell us what you like and we rate every month in Busan for you.
Your best months: June, September – October
Based on the climate averages; tap a month to see its details.
Compare two months in Busan
Pick two months to see how the weather differs. A tick marks the clearly better value; for temperatures it depends on your plans.
October and May bring similar holiday weather to Busan (score 90 and 86). In May, days are 1 °C cooler than in October. The sea is 5 °C cooler in May. May has 3 more rainy days. The sun shines an hour longer a day in May.
| Month | October | May |
|---|---|---|
| Weather score | 90better | 86 |
| Day high | 21° | 20° |
| Night low | 15° | 14° |
| Sea | 22.2° | 16.8° |
| Sunshine | 6.8 h | 7.4 hbetter |
| Rainy days | 5better | 8 |
| Rainfall | 77 mmbetter | 121 mm |
| Muggy days | 2 | 1better |
Based on the climate averages 1996–2025.
Which month for what?
Beach & swimming
Sep
Sea from 21 °C, warm and mostly dry
Sightseeing & hiking
Apr – Jun, Sep – Oct
15–28 °C and not too much rain
Rainy months
Jul – Aug
12 or more rainy days
Busan month by month
The typical weather for every month at a glance.
42January7° · Sea 15° · 7 h
In January, Busan is cold: daytime highs average 7 °C, and nights cool down to about 1 °C. The sea averages 14.7 °C – swimming is only for the hardy. The sun shines for around 7 hours a day. Rain is rare: about 4 days bring 29 mm in total. All in all, January is a so-so month for a holiday in Busan.
Busan in January43February9° · Sea 14° · 7 h
In February, Busan is cold: daytime highs average 9 °C, and nights cool down to about 2 °C. The sea averages 13.7 °C – swimming is only for the hardy. The sun shines for around 7 hours a day. Rain is rare: about 5 days bring 42 mm in total. All in all, February is a so-so month for a holiday in Busan.
Busan in February55March12° · Sea 14° · 7 h
In March, Busan is cool: daytime highs average 12 °C, and nights cool down to about 6 °C. The sea averages 13.8 °C – swimming is only for the hardy. The sun shines for around 7 hours a day. Rain falls on about 7 days, adding up to 80 mm. All in all, March is a so-so month for a holiday in Busan.
Busan in March76April16° · Sea 15° · 7 h
In April, Busan is mild: daytime highs average 16 °C, and nights cool down to about 10 °C. The sea averages 14.8 °C – swimming is only for the hardy. The sun shines for around 7 hours a day. Rain falls on about 8 days, adding up to 110 mm. All in all, April is a good month for a holiday in Busan.
Busan in April86May20° · Sea 17° · 7 h
In May, Busan is mild: daytime highs average 20 °C, and nights cool down to about 14 °C. The sea averages 16.8 °C – swimming is only for the hardy. The sun shines for around 7 hours a day. Rain falls on about 8 days, adding up to 121 mm. All in all, May is an excellent month for a holiday in Busan.
Busan in May78June23° · Sea 20° · 6 h
In June, Busan is warm: daytime highs average 23 °C, and nights cool down to about 19 °C. The sea averages 20.3 °C – refreshing for a swim. Expect around 6 hours of sunshine a day. Rain is frequent, with about 10 rainy days and 167 mm in total. All in all, June is a good month for a holiday in Busan.
Busan in June67July26° · Sea 24° · 6 h
In July, Busan is warm: daytime highs average 26 °C, and even at night it stays warm at around 23 °C. The sea averages 23.5 °C – pleasant for swimming. Expect around 6 hours of sunshine a day. It rains often – on about 14 days, adding up to 234 mm. The air is often humid and muggy. All in all, July is a good month for a holiday in Busan.
Busan in July64August28° · Sea 27° · 6 h
In August, Busan is hot: daytime highs average 28 °C, and even at night it stays warm at around 24 °C. The sea averages 26.5 °C – lovely and warm for swimming. Expect around 6 hours of sunshine a day. Rain is frequent, with about 14 rainy days and 202 mm in total. On about 5 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, August is a good month for a holiday in Busan.
Busan in August76September25° · Sea 25° · 6 h
In September, Busan is warm: daytime highs average 25 °C, and even at night it stays warm at around 21 °C. The sea averages 24.9 °C – pleasant for swimming. Expect around 6 hours of sunshine a day. Rain is frequent, with about 10 rainy days and 174 mm in total. The air is often humid and muggy. All in all, September is a good month for a holiday in Busan.
Busan in September90October21° · Sea 22° · 7 h
In October, Busan is mild: daytime highs average 21 °C, and nights cool down to about 15 °C. The sea averages 22.2 °C – refreshing for a swim. The sun shines for around 7 hours a day. Rain falls on about 5 days, adding up to 77 mm. All in all, October is an excellent month for a holiday in Busan.
Busan in October74November15° · Sea 20° · 7 h
In November, Busan is cool: daytime highs average 15 °C, and nights cool down to about 9 °C. The sea averages 19.5 °C – bracing, so a wetsuit helps for longer swims. The sun shines for around 7 hours a day. Rain is rare: about 5 days bring 52 mm in total. All in all, November is a good month for a holiday in Busan.
Busan in November46December9° · Sea 17° · 7 h
In December, Busan is cold: daytime highs average 9 °C, and nights cool down to about 3 °C. The sea averages 16.9 °C – swimming is only for the hardy. The sun shines for around 7 hours a day. Rain is rare: about 3 days bring 27 mm in total. All in all, December is a so-so month for a holiday in Busan.
Busan in DecemberBusan compared
Put Busan side by side with another destination.
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Busan vs. Ulsan
In October the holiday weather in Busan and Ulsan is about equally good (score 90 vs. 87). During the day Ulsan is 1 °C cooler than Busan. The sea is about equally warm. Ulsan gets one hour less sunshine a day.
| in October | Busan | Ulsan |
|---|---|---|
| Holiday score | 90 | 87 |
| Daytime high | 21° | 20° |
| Sea | 22° | 22° |
| Sunshine | 7 h | 6 h |
| Rainy days | 5 | 6 |
| Best time | Apr – Jun, Sep – Oct | Apr – Jun, Sep – Oct |
Through the year
South Korea in October: the best places
In October, Busan ranks 1 of 9 destinations in this country.
- BusanThis page21°22°90
- 2Daegu20°90
- 3Gwangju20°90
- 4Daejeon20°89
- 5Seoul19°88
- 6Ulsan20°22°87
- 7Gyeongju20°85
- 8Jeju21°22°82
Planning a trip to Busan
Weather for your travel dates
Pick your arrival and length of stay, and we sum up the weather to expect.
Busan in the school holidays
How the weather suits the usual holiday periods. Dates vary by school and region, so each holiday uses the months it usually falls in.
Busan has its best school-holiday weather during October half-term (score 90) and its weakest during the Christmas holidays (score 44).
- 70
Easter holidays
Mar – Apr
Good
- 15 °C by day
- Sea 15 °C
- 6.9 h of sun a day
- 8 rainy days a month
- 84
May half-term
May – Jun
Excellent
- 20 °C by day
- Sea 18 °C
- 7.1 h of sun a day
- 8 rainy days a month
Good for: Sightseeing & walks
- 65
Summer holidays
Jul – Aug
Good
- 27 °C by day
- Sea 25 °C
- 6.1 h of sun a day
- 14 rainy days a month
Keep in mind: Frequent rain, Storm season
- 90
October half-term
Oct
ExcellentBest holidays
- 21 °C by day
- Sea 22 °C
- 6.8 h of sun a day
- 5 rainy days a month
Good for: Sightseeing & walks
Keep in mind: Storm season
- 44
Christmas holidays
Dec – Jan
Fair
- 8 °C by day
- Sea 16 °C
- 6.6 h of sun a day
- 4 rainy days a month
Based on the climate averages 1996–2025.
Getting there
Flying from
- Nonstop flight
- about 11 h 35 min
- Distance
- 9,200 km
- Time zone
- UTC+9
- Jet lag
- About 8 days (8 h east)
Rule of thumb for flying east: for a few days before, go to bed and get up a little earlier, and get plenty of morning light at your destination.
Most routes need a change of planes, which adds time.
Estimated from the straight-line distance: 30 minutes for take-off and landing plus 830 km/h cruising speed.
Storm season
Busan lies in an area that Pacific typhoons can reach. The typhoon season runs from June to November, with most storms from August to October. A direct hit on any one place is rare, but if you travel then, keep an eye on weather warnings and book flexibly.
- January
- February
- March
- April
- May
- June: Season
- July: Season
- August: Peak
- September: Peak
- October: Peak
- November: Season
- December
Official season dates of the regional warning centres (NOAA, JMA, IMD, Météo-France, BoM); not a forecast.
Frequently asked questions about Busan
When is the best time to visit Busan?
The best time to visit Busan is from April to June and from September to October. That is when the holiday weather score, which combines temperature, sea, sunshine and rain, is highest.
How warm is the sea in Busan?
The sea temperature in Busan ranges from 13.7 °C in February to 26.5 °C in August. It is warm enough for a comfortable swim (20 °C and more) from June to October.
Can you swim in Busan in October?
Yes. In October the sea averages 22.2 °C – refreshing for a swim.
What is the warmest month in Busan?
August is the warmest month, with average highs of 28 °C and nights around 24 °C. January is the coolest month at 7 °C.
When does it rain most in Busan?
Rain is most frequent from July to August; the wettest month is July with 234 mm. The driest month is December with 27 mm.
How many hours of sunshine does Busan get?
Busan gets around 2,370 hours of sunshine a year. The sunniest month is May with 7.4 hours a day; in July there are 5.6 hours a day.
What time zone is Busan in?
Busan uses the time zone Asia/Seoul, at UTC+9 all year.
How long is the flight from London to Busan?
A nonstop flight from London to Busan takes about 11 h 35 min, for a straight-line distance of about 9,200 km. Most routes need a change of planes, which adds time.
When is typhoon season in Busan?
Busan lies in an area that Pacific typhoons can reach. The typhoon season runs from June to November, with most storms from August to October. A direct hit on any one place is rare, but if you travel then, keep an eye on weather warnings and book flexibly.
Which school holidays are best for Busan?
Busan has its best school-holiday weather during October half-term (score 90) and its weakest during the Christmas holidays (score 44). Holiday ratings (0–100): Easter holidays 70, May half-term 84, Summer holidays 65, October half-term 90, Christmas holidays 44.
Near Busan
Other destinations close by.
Places with a climate like Busan
Destinations whose weather through the year is closest to Busan's – good alternatives.