Climate Insights for Hamhŭng

The climate in Hamhŭng is temperate. The average annual temperature is 10°C and approximately 1260mm of precipitation falls per year. August is the wettest month, receiving around 263mm of rainfall. Hamhŭng is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: July, August, June. The coldest months are January, February, December, when temperatures can drop to -9°C. Snowfall occurs from January to December, with around 95cm accumulating over the season.

Hamhŭng has a wide annual temperature range, spanning 36°C from the coldest to warmest months. The warmest month is July, when average highs reach 27°C and the mean temperature sits around 24°C. The coldest month is January, when overnight lows fall to -9°C and the daily average is -5°C. On average, daily temperatures fluctuate by about 9°C between overnight lows and afternoon highs. The sharpest temperature change occurs between November and December, with a 7°C shift in average temperatures.

Hamhŭng is a fairly wet location, receiving approximately 1260mm of precipitation annually, which averages out to around 105mm per month. The wettest month is August, averaging 263mm of rainfall. July and September also tend to see above-average precipitation. The driest month is January, with just 28mm. That's 235mm less than August, the wettest month. Rainfall is heavily concentrated in certain months, creating a distinct wet and dry season. Visitors should plan around these patterns, as the difference between peak and low months is dramatic. Snowfall is a regular feature from January to December, with around 95cm accumulating over the season. February typically sees the most snow at around 27cm.

Hamhŭng is mildly breezy, with an average annual wind speed of 13km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is April, averaging 15km/h, though still comfortable for most outdoor activities. The calmest conditions occur in August, with average winds dropping to 10km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 5km/h gap between the calmest and windiest months. Wind tends to be stronger during winter months, driven by seasonal pressure systems. The seasonal averages break down to 14km/h in winter, 14km/h in spring, 11km/h in summer, 12km/h in autumn.

It is currently spring in Hamhŭng, which began on March 20, 2026. Hamhŭng is in the Northern Hemisphere, where spring begins in March, summer in June, autumn in September, and winter in December. The warmest period peaks in July at around 27°C, while the coldest stretch bottoms out in January near -9°C. Summer is next, beginning on June 21, 2026 — 90 days from now.

The best time to visit Hamhŭng is during May, when the weather is most comfortable for travellers. During these months, average temperatures hover around 16°C with modest rainfall averaging 96mm per month. By contrast, July can be uncomfortably hot with highs reaching 27°C, while January is the coldest period with lows dropping to -9°C. Despite being the best months overall, some rain is still likely — pack a waterproof layer and plan a mix of indoor and outdoor activities.

The table below shows monthly climate averages for Hamhŭng based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Celsius (°C). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Snow is measured in centimetres (cm) and reflects average monthly snowfall accumulation. Wind speed is the average sustained speed in kilometres per hour (km/h). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.