Last updated: August 23, 2025
In Hyesan, North Korea, the average temperature in May hovers around 10°C (51°F), with a minimum dipping as low as -3°C (27°F) and a maximum soaring up to 29°C (85°F). Expect 109 mm (4.3 in) of precipitation spread over roughly 15 days, with an average humidity level of 73%. It's a month of varying weather, so be prepared for both cool and warm days!
In May in Hyesan, the average temperature is 10°C (51°F), with maximums reaching up to 29°C (85°F) and minimums dropping as low as -3°C (27°F). This diverse range of temperatures means travelers should prepare for both warm and chilly conditions during their visit.
In Hyesan in May, the precipitation amount is 109 mm (4.3 in) spread over 15 days.
In Hyesan in May, humidity is 73%. With an average temperature of 10°C (51°F), this humidity feels like a chilly dampness that can make outdoor activities uncomfortable, causing your clothes to cling to your skin and a persistent coolness that seeps into your bones, which might deter long excursions without proper layering.
In Hyesan in May, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Hyesan.
UV Risk Categories
Weather in Hyesan varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in Hyesan, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -16°C (4°F) | 14 mm (0.6 inches) | 78% | moderate |
| February Weather | -13°C (9°F) | 29 mm (1.2 inches) | 71% | moderate |
| March Weather | -3°C (27°F) | 42 mm (1.6 inches) | 62% | high |
| April Weather | 4°C (40°F) | 52 mm (2.1 inches) | 65% | very high |
| May Weather | 10°C (51°F) | 109 mm (4.3 inches) | 73% | very high |
| June Weather | 15°C (59°F) | 100 mm (3.9 inches) | 83% | extreme |
| July Weather | 20°C (68°F) | 97 mm (3.8 inches) | 87% | extreme |
| August Weather | 19°C (66°F) | 187 mm (7.4 inches) | 89% | extreme |
| September Weather | 13°C (55°F) | 79 mm (3.1 inches) | 79% | very high |
| October Weather | 5°C (41°F) | 56 mm (2.2 inches) | 80% | high |
| November Weather | -4°C (25°F) | 44 mm (1.7 inches) | 69% | moderate |
| December Weather | -14°C (7°F) | 24 mm (0.9 inches) | 75% | low |