Climate Chart of Ulsan, South Korea

Monthly data: Temperature °C, Rain (mm), Sunshine (h) · 2013–2023

Climate overview

Temperature

Monthly mean temperatures reach their lowest point at 1.7 °C in January, then their highest at 26.4 °C in August. These figures describe the average temperature for each month, not typical daytime highs, so they do not show the range visitors may experience from day to day. The unweighted mean across the calendar-month temperature means is 14.1 °C; it summarizes the monthly averages without weighting months by their number of days.

Rain

Mean daily rainfall is highest at 7.95 mm/day in July and lowest at 1.11 mm/day in December. These daily averages can help frame expectations for rain preparation, but they do not indicate how often rain falls or guarantee dry or wet conditions on a particular day. The unweighted mean of the monthly daily-rainfall means is 3.76 mm/day, not a monthly rainfall total or a day-weighted annual average.

Sunshine

Mean daily sunshine duration is greatest at 9.97 hours/day in May and least at 7.41 hours/day in September. The unweighted mean across monthly figures is 8.43 hours/day. Sunshine duration can inform outdoor planning, but it is not the same as day length and does not promise clear skies on any individual day.

Snow

Mean daily snowfall reaches its highest monthly figure at 0.78 mm/day in March, while the unweighted mean across monthly figures is 0.11 mm/day. These averages describe snowfall amounts, not the number of snowy days, snow depth or snow cover, and do not establish skiing conditions.

Best Travel Time Guide for Ulsan, South Korea: Ideal Seasons and Weather Insights

For visitors prioritising lower average rainfall, December is the conditional option in the supplied figures, with mean daily rainfall of 1.11 mm/day; it is not a guarantee of dry days. Rain preparation is especially relevant when visiting in July, whose mean daily rainfall is 7.95 mm/day. These averages do not reveal rain frequency, so flexible plans and suitable rain protection remain sensible. Those who prefer cooler monthly mean temperatures may consider January, at 1.7 °C, while the warmest monthly mean is 26.4 °C in August. These are monthly means rather than daytime maximums, so check conditions for your specific travel dates when planning outdoor sightseeing.

For daylight outdoor planning, mean daily sunshine is highest in May at 9.97 hours/day and lowest in September at 7.41 hours/day. These figures describe average sunshine duration, not day length or the certainty of sunshine on a given day, so they offer a planning reference rather than a forecast. The highest supplied mean daily snowfall is 0.78 mm/day in March. That amount alone cannot tell you whether snow will fall during a visit or establish snow cover, so it should not be used as a guide to skiing conditions.

Climate Data Overview for Ulsan, South Korea

Explore the comprehensive climate data for Ulsan, South Korea. This detailed table provides valuable insights into temperature variations, precipitation levels, and seasonal changes, helping you understand the unique weather patterns of this region.

• See also climate change in Ulsan
• Explore the climate in South Korea