Busan, South Korea · Records from 2006 to 2025. Not a forecast.
Mean high28°Hottest day 34.4° (2013)
Mean low22°Coldest night 15.7° (2015)
Rain days10 days6-19 by year
Rainfall307mmDaylight 14.5 → 14.0 h
Busan's 12 months iBest: May, June and October
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Trip typesBeach Finecool sea and storm riskSightseeing on foot Finemuggy and storm risk
Humidity83%27 muggy days
Clear days3 days16 overcast days
Mean wind11 km/hRarely windy
Sea temperature24.1°21.9-25.8° by year (last 6)
Sunrise / sunset (15th)05:20 / 19:39Daylight 14.5 → 14.0 h
Busan in July
The wettest month of the year, with the rainy season usually ending in the last ten days. Gwangalli, Songdo, Dadaepo and the other beaches open around July 1. In early July, thick sea fog is common over the water off Haeundae, and on some days only the tops of the high-rises poke out above it.
It was a hot month: 28°C by day and 22°C after dark. With 10 rain days on average, a wet day was rarely more than a few days away. It varied a lot from year to year. July 2013 had 6 rain days; 2020 had 19.
About 8 days a month still climbed past 30°C, the ones where you looked for shade. The warmest year was 2025, with highs averaging 30.2°C, 2.3°C above normal. Rain days averaged 30 mm each, so when it rained it rained properly.
How long it rained
On a rainy day it rained for about 6.2 hours. Rain came at any time of day.
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Typhoons i
4 of the last 20 years had a tropical storm pass within 300 km this month.
Over the past 20 years July averaged 10 rain days (1 mm or more) out of 31. Individual years ran from 6 in the driest to 19 in the wettest.
What should I wear in Busan in July?
Days averaged 28°C and nights 22°C. Pack a compact umbrella, T-shirts, sunscreen plus a hat, a swimsuit, and insect repellent.
Can you swim in Busan in July?
Sea surface temperature averaged 24.1°C in July, comfortable for swimming. Year to year it ranged 21.9-25.8°C. Check local flags for waves and jellyfish on the day.
Is July a good time to visit Busan?
On warmth and rain days alone, Busan's easiest months were May, June and October. July ranked 7 of 12.
Is Busan humid in July?
Mean relative humidity was 83%, with about 27 muggy days (dew point of 20°C or more) in the month.