Busan, South Korea · Records from 2006 to 2025. Not a forecast.
Mean high30°Hottest day 36.4° (2013)
Mean low24°Coldest night 17.4° (2016)
Rain days9 days5-15 by year
Rainfall222mmDaylight 13.9 → 13.0 h
Busan's 12 months iBest: May, June and October
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Trip typesBeach Finewarm sea and storm riskSightseeing on foot Finemuggy and storm risk
Humidity80%28 muggy days
Clear days5 days12 overcast days
Mean wind12 km/hRarely windy
Sea temperature27°25.4-28.6° by year (last 6)
Sunrise / sunset (15th)05:43 / 19:14Daylight 13.9 → 13.0 h
Busan in August
Once the rains end, Busan reaches its hottest and stickiest weeks. The beaches are at their busiest with summer holiday crowds, and the Busan Sea Festival takes place in early August, mostly at Dadaepo Beach in recent years. Typhoons start moving up toward the south coast, so check the storm news before you travel. Swimming is banned while a typhoon approaches.
Busan in August ran hot: 30°C by day and 24°C at night. By midday the shade was the best seat in town. Rain fell on 9 days of the month on average. Most years sat near the average of 9, though 2013 dipped to 5 and 2021 climbed to 15.
15 days past 30°C made it a month for early starts and a long lunch indoors. Not every year was typical: 2013 ran 2.7°C warmer than the mean, with highs of 32.4°C. Wet days did not mess around: about 24 mm each, the kind of rain that drives you into a doorway.
How long it rained
On a rainy day it rained for about 5.7 hours. Rain came at any time of day.
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Typhoons i
10 of the last 20 years had a tropical storm pass within 300 km this month.
Over the past 20 years August averaged 9 rain days (1 mm or more) out of 31. Individual years ran from 5 in the driest to 15 in the wettest.
What should I wear in Busan in August?
Days averaged 30°C and nights 24°C. Pack a compact umbrella, T-shirts, sunscreen plus a hat, a swimsuit, and insect repellent.
Can you swim in Busan in August?
Sea surface temperature averaged 27°C in August, warm enough to stay in for a long swim. Year to year it ranged 25.4-28.6°C. Check local flags for waves and jellyfish on the day.
Is August a good time to visit Busan?
On warmth and rain days alone, Busan's easiest months were May, June and October. August ranked 8 of 12.
Is Busan humid in August?
Mean relative humidity was 80%, with about 28 muggy days (dew point of 20°C or more) in the month.