Climate Insights for Hwasŏng

The climate in Hwasŏng is cool. The average annual temperature is 8°C and approximately 973mm of precipitation falls per year. August is the wettest month, receiving around 262mm of rainfall. Hwasŏng 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 -15°C. Snowfall occurs from January to December, with around 113cm accumulating over the season.

Hwasŏng has a wide annual temperature range, spanning 41°C from the coldest to warmest months. The warmest month is July, when average highs reach 26°C and the mean temperature sits around 22°C. The coldest month is January, when overnight lows fall to -15°C and the daily average is -9°C. On average, daily temperatures fluctuate by about 9°C between overnight lows and afternoon highs. The sharpest temperature change occurs between February and March, with a 8°C shift in average temperatures.

Hwasŏng is a moderately rainy area, receiving approximately 973mm of precipitation annually, which averages out to around 81mm per month. The wettest month is August, averaging 262mm of rainfall. July and September also tend to see above-average precipitation. The driest month is January, with just 26mm. That's 236mm 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 113cm accumulating over the season. December typically sees the most snow at around 28cm.

Hwasŏng is relatively calm, with an average annual wind speed of 10km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is May, averaging 12km/h, though still comfortable for most outdoor activities. The calmest conditions occur in July, with average winds dropping to 8km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 4km/h gap between the calmest and windiest months.

It is currently spring in Hwasŏng, which began on March 20, 2026. Hwasŏng 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 26°C, while the coldest stretch bottoms out in January near -15°C. Summer is next, beginning on June 21, 2026 — 89 days from now.

The best time to visit Hwasŏng is during June, when the weather is most comfortable for travellers. During these months, average temperatures hover around 18°C with modest rainfall averaging 93mm per month. By contrast, July can be uncomfortably hot with highs reaching 26°C, while January is the coldest period with lows dropping to -15°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 Hwasŏng 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.