South Korea · 30-year monthly climate averages
Based on 30 years of climate data, the most comfortable months to visit Busan are May, October and November, when daytime temperatures are agreeable and rainfall is relatively low.
Busan sees its warmest weather in August, when daytime highs average around 30°C, and its coolest in January (around 8°C).
Annual precipitation totals roughly 1577mm — July is typically the wettest month (~327mm) and December the driest (~34mm).
A distinctly wetter period runs from April to September — worth planning around if you prefer dry days.
May is the sunniest month, with about 229 hours of sunshine.
🟧 avg daytime high · 🟦 dashed: avg nighttime low · bars: monthly rainfall
Daily forecast highs vs the 30-year normal — last 60 days
Each bar is one day: orange above normal, blue below.
| Month | High / Low | Rainfall | Travel rating |
|---|---|---|---|
| January | 8° / 0°C | 35mm | 🤔 Fair |
| February | 10° / 2°C | 50mm | 🤔 Fair |
| March | 14° / 5°C | 90mm | 🤔 Fair |
| April | 18° / 10°C | 141mm | 👍 Good |
| May | 22° / 15°C | 156mm | 👍 Good |
| June | 25° / 18°C | 188mm | 👍 Good |
| July | 28° / 22°C | 327mm | 🤔 Fair |
| August | 30° / 24°C | 267mm | 🤔 Fair |
| September | 26° / 20°C | 161mm | 👍 Good |
| October | 23° / 15°C | 80mm | 🌟 Great |
| November | 17° / 8°C | 50mm | 👍 Good |
| December | 10° / 2°C | 34mm | 🤔 Fair |
January in Busan is chilly, with average daytime highs around 8°C (47°F) and nighttime lows near 0°C (32°F). Expect roughly 35mm of precipitation spread over about 4 rainy days, with little rainfall.
☀️ About 203 hours of sunshine over the month (~7h/day).
🎒 What to pack — jacket or coat · long-sleeve layers
February in Busan is chilly, with average daytime highs around 10°C (50°F) and nighttime lows near 2°C (35°F). Expect roughly 50mm of precipitation spread over about 5 rainy days, with little rainfall.
☀️ About 189 hours of sunshine over the month (~6h/day).
🎒 What to pack — jacket or coat · long-sleeve layers
March in Busan is chilly, with average daytime highs around 14°C (57°F) and nighttime lows near 5°C (42°F). Expect roughly 90mm of precipitation spread over about 7 rainy days, with a moderate amount of rain.
☀️ About 202 hours of sunshine over the month (~7h/day).
🎒 What to pack — jacket or coat · long-sleeve layers
April in Busan is mild, with average daytime highs around 18°C (65°F) and nighttime lows near 10°C (50°F). Expect roughly 141mm of precipitation spread over about 8 rainy days, and this is one of the wetter months.
☀️ About 213 hours of sunshine over the month (~7h/day).
🎒 What to pack — light jacket · layers for cool evenings · compact umbrella or rain jacket
May in Busan is pleasantly warm, with average daytime highs around 22°C (72°F) and nighttime lows near 15°C (58°F). Expect roughly 156mm of precipitation spread over about 7 rainy days, and this is one of the wetter months.
☀️ About 229 hours of sunshine over the month (~8h/day).
🎒 What to pack — light layers · comfortable walking shoes · compact umbrella or rain jacket
June in Busan is pleasantly warm, with average daytime highs around 25°C (76°F) and nighttime lows near 18°C (65°F). Expect roughly 188mm of precipitation spread over about 8 rainy days, and this is one of the wetter months.
☀️ About 180 hours of sunshine over the month (~6h/day).
🎒 What to pack — light layers · comfortable walking shoes · compact umbrella or rain jacket
July in Busan is warm, with average daytime highs around 28°C (82°F) and nighttime lows near 22°C (72°F). Expect roughly 327mm of precipitation spread over about 11 rainy days, and heavy rainfall is common — this is peak wet season territory.
☀️ About 172 hours of sunshine over the month (~6h/day).
🎒 What to pack — light summer clothing · sunscreen and sunglasses · compact umbrella or rain jacket
August in Busan is warm, with average daytime highs around 30°C (85°F) and nighttime lows near 24°C (75°F). Expect roughly 267mm of precipitation spread over about 10 rainy days, and heavy rainfall is common — this is peak wet season territory.
☀️ About 199 hours of sunshine over the month (~7h/day).
🎒 What to pack — light summer clothing · sunscreen and sunglasses · compact umbrella or rain jacket
September in Busan is warm, with average daytime highs around 26°C (80°F) and nighttime lows near 20°C (68°F). Expect roughly 161mm of precipitation spread over about 7 rainy days, and this is one of the wetter months.
☀️ About 174 hours of sunshine over the month (~6h/day).
🎒 What to pack — light summer clothing · sunscreen and sunglasses · compact umbrella or rain jacket
October in Busan is pleasantly warm, with average daytime highs around 23°C (73°F) and nighttime lows near 15°C (58°F). Expect roughly 80mm of precipitation spread over about 4 rainy days, with a moderate amount of rain.
☀️ About 212 hours of sunshine over the month (~7h/day).
🎒 What to pack — light layers · comfortable walking shoes
November in Busan is mild, with average daytime highs around 17°C (62°F) and nighttime lows near 8°C (47°F). Expect roughly 50mm of precipitation spread over about 4 rainy days, with little rainfall.
☀️ About 196 hours of sunshine over the month (~7h/day).
🎒 What to pack — light jacket · layers for cool evenings
December in Busan is chilly, with average daytime highs around 10°C (51°F) and nighttime lows near 2°C (36°F). Expect roughly 34mm of precipitation spread over about 3 rainy days, with little rainfall.
☀️ About 206 hours of sunshine over the month (~7h/day).
🎒 What to pack — jacket or coat · long-sleeve layers