Wonsan Weather in May
Wonsan in May sees pleasant temperatures, with highs around 21°C (70°F) and overnight lows of 11°C (52°F). Rainfall is fairly high at around 104 mm (4.1 in) on average, so pack waterproofs just in case.
Rainfall in Wonsan in May
On average, there are about 9 days with rain during this month, averaging 104 mm (4.1 in). Individual showers can be quite heavy this month. A proper umbrella or rain jacket is worth having.
Temperature in Wonsan in May
In May, Wonsan sees pleasant temperatures, with highs of 21°C (70°F). Nights drop to around 11°C (52°F). Temperatures can feel cooler in the morning and evening, so layering is often the best approach. Nights cool down to 11°C (52°F), so a light jacket or extra layer is useful once the sun goes down. On the plus side, the cooler nights make for comfortable sleeping conditions.
Sunshine in Wonsan in May
Expect sunny days throughout the month, with an estimated 236 hours of sunshine. This makes it a pleasant time to visit Wonsan.
Average water temperature in May
The water sits at 12°C (54°F) this month, which is well below what most people consider swimmable. Wetsuits help, but expect it to still feel cold.If your ideal day consists of dry skies and pleasant temperatures, May, June, September and October typically offer the best circumstances for Wonsan.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit North Korea, check out our Wonsan's climate page.
Wonsan Temperature in May
Min Temperature
11°C (52°F)
Max Temperature
21°C (70°F)
Water Temperature
12°C (54°F)
Chance of Rain
31%
Precipitation
104 mm (4.1 in)
Rainy days
9 days
Humidity
68%
Sunshine
236 hours
Percentage Sunshine
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Wonsan typically stay consistent throughout May, with daily highs averaging around 21°C (70°F). Nights are cool, with lows typically ranging from 10°C (50°F) to 15°C (59°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 for Wonsan in May
Browse day-by-day weather records for Wonsan spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Wonsan historical weather extremes in May
Based on 20 years of weather observations in Wonsan between 2006 and 2026, these are the recorded extremes.
- Wonsan recorded its highest May temperature of 34°C (93°F) on May 24, 2019.
- The lowest daytime temperature in May was 10°C (50°F), recorded on May 6, 2011.
- The lowest overnight temperature recorded in May was 5°C (41°F) (May 10, 2018).
Best Places in North Korea in May
Find out more about the weather in North Korea and which places have the best travel conditions in this month. See all of North Korea in May →
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What to Wear in Wonsan in May
For Wonsan 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. The water temperature sits at about 12°C (54°F), which is too chilly for most people to enjoy swimming. Leave the swimsuit at home unless you love cold water. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.What To Do in Wonsan in May
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit North Korea, check out our Wonsan's climate page.
Temperature Rainfall Sunshine Humidity Water Temp
See the full Wonsan climate overview or explore weather in North Korea.
