Mud festival in South Korea
In July, the peaceful seaside town of Boryeong turned into a chaos of mud for 9 days. We recommend putting this festival on your bucket list.
In Haenam-eup, May brings pleasant daytime temperatures around 21°C (70°F), with nights cooling to 15°C (59°F). Expect quite a bit of rainfall this month.
For Haenam-eup itself, October generally stands out with the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.
Pick a month to see the average temperature, rainfall and sunshine in Haenam-eup - and find the best time to visit.
50-year average (1976-2025)
Based on our historical records, temperatures in Haenam-eup typically rise from around 21°C (70°F) at the start of May to approximately 25°C (77°F) by the end. Nights are cool, with lows typically ranging from 11°C (52°F) to 16°C (61°F).
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Browse day-by-day weather records for Haenam-eup spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Based on 50 years of weather observations in Haenam-eup between 1976 and 2026, these are the recorded extremes.
Find out more about the weather in South Korea and which places have the best travel conditions in this month. See all of South Korea in May →
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
For Haenam-eup in May, you'll want flexible clothing. It's wise to pack cotton shirts, comfortable shorts, and a pair of jeans for cooler evenings. A light sweater or jacket is useful for air-conditioned spaces (like buses) or unexpected cool moments. High rain levels are expected, so pack waterproof gear and an umbrella or poncho. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Temperature Rainfall Sunshine Humidity
See the full Haenam-eup climate overview or explore weather in South Korea.
Where to go in May - average daytime high across popular destinations.
Need travel inspiration? Check out our bucket list articles and be inspired.
Mud festival in South Korea
In July, the peaceful seaside town of Boryeong turned into a chaos of mud for 9 days. We recommend putting this festival on your bucket list.
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