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.
Donghae Weather in May
May in Donghae averages 21°C (70°F) during the day and 13°C (55°F) at night. Quite a bit of rainfall is typical this month, with around 77 mm (3 in) on average. An umbrella is a good idea.
Rainfall in Donghae in May
Historically, the month has about 8 days of rain, averaging 77 mm (3 in) in total. Rainfall intensity is on the higher side this month. Expect more substantial showers rather than light, passing rain.
Temperature in Donghae in May
The excellent temperature in Donghae in May makes it a solid month to visit, with 21°C (70°F) during the day and 13°C (55°F) at night. Temperatures can feel cooler in the morning and evening, so layering is often the best approach. With overnight lows of 13°C (55°F), evenings can feel noticeably cooler than the daytime. An extra layer is a good idea, though the cool air makes for a good night's sleep.
Sunshine in Donghae in May
Expect a lot of sunshine this month, with about 235 hours of sun. These sunny conditions add to the overall experience.If your ideal day consists of dry skies and pleasant temperatures, May typically offers the best circumstances for Donghae.
Donghae Temperature in May
Min Temperature
13°C (55°F)
Max Temperature
21°C (70°F)
Chance of Rain
27%
Precipitation
77 mm (3 in)
Rainy days
8 days
Humidity
68% *
Sunshine
235 hours *
Percentage Sunshine
52% *
* Data from: Pyeongchang, South Korea (65 KM, 40 Miles).
Donghae Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Donghae - and find the best time to visit.
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Donghae typically stay consistent throughout May, with daily highs averaging around 21°C (70°F). Nights are cool, with lows typically ranging from 9°C (48°F) to 13°C (55°F).
Average temperatures in May
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in May
Historical weather records for Donghae in May
Browse day-by-day weather records for Donghae spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Donghae historical weather extremes in May
According to our 50 years of weather records for Donghae, the following extremes were recorded between 1976 and 2026.
- The hottest May day on record in Donghae reached 33°C (91°F) (May 17, 2023).
- On May 17, 1981, Donghae saw its coldest May day with temperatures maxing out at 10°C (50°F).
- The coldest night in May in Donghae was on May 4, 1987, with a minimum of -3°C (27°F).
Best Places in South Korea in May
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
pleasant
tolerable
unpleasant
poor
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).
What to Wear in Donghae in May
Pleasant temperatures in May mean you can pack light but flexibel pieces. Think cotton t-shirts, comfortable walking shorts, and one warmer layer for evenings. A light sweater or denim jacket works well. Rain gear is recommended, you can expect wet weather on multiple days. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.
What To Do in Donghae in May
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Cycling9/10 -
Walking9/10 -
Barbeque8/10 -
Camping8/10 -
Outdoor sports9/10
Donghae 3-Day Forecast
More climate data for Donghae
Temperature Rainfall Sunshine Humidity
See the full Donghae climate overview or explore weather in South Korea.
Popular in May
Where to go in May - average daytime high across popular destinations.
Seoul
24°C (75°F) Jeonju25°C (77°F) Suwon24°C (75°F) Gyeongju25°C (77°F) Seogwipo
22°C (72°F) Incheon21°C (70°F) Busan22°C (72°F) Jeju20°C (68°F) Bucket list
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