
Best DMZ Tour Korea from Seoul (Suspension Bridge & JSA Museum)
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Check availabilitySeoul, South Korea
Weather month by month, from 20 years of weather-station records.
Average daily high and low, total rainfall and days with at least 2.5 mm of rain.
| Month | High / low | Rain | Verdict |
|---|---|---|---|
| January | 2°C / -6°C | 109 mm · 8 days | Cold |
| February | 5°C / -4°C | 88 mm · 8 days | Cold |
| March | 11°C / 2°C | 143 mm · 10 days | Cold |
| April | 18°C / 8°C | 178 mm · 13 days | Wet |
| May | 24°C / 13°C | 273 mm · 15 days | Good |
| June | 28°C / 19°C | 335 mm · 13 days | Wet |
| July | 29°C / 23°C | 759 mm · 18 days | Wet |
| August | 30°C / 24°C | 438 mm · 16 days | Wet |
| September | 27°C / 18°C | 384 mm · 15 days | Good |
| October | 21°C / 11°C | 191 mm · 14 days | Good |
| November | 12°C / 3°C | 145 mm · 12 days | Wet |
| December | 4°C / -5°C | 59 mm · 6 days | Cold |
Spring (March-May) is arguably Seoul's most beautiful season, with mild temperatures and the city exploding in pastel shades of cherry blossoms and other spring flowers.
Summer (June-August) is hot, humid, and rainy, with the monsoon season (Jangma) typically hitting in July. It's a vibrant but physically demanding time to visit.
Autumn (September-November) brings crisp, cool air and spectacular foliage. The mountains and palace grounds are set ablaze with vibrant red, orange, and yellow hues.
Winter (December-February) is cold and dry, with occasional snow that dusts the palaces in a magical way. It's the season for cozy indoor activities and hearty food.
In January, Seoul averages highs of 2°C and lows of -6°C, with about 8 rainy days and 109 mm of rain. It is cold, so pack warm layers.
In February, Seoul averages highs of 5°C and lows of -4°C, with about 8 rainy days and 88 mm of rain. It is cold, so pack warm layers.
In March, Seoul averages highs of 11°C and lows of 2°C, with about 10 rainy days and 143 mm of rain. It is cold, so pack warm layers.
In April, Seoul averages highs of 18°C and lows of 8°C, with about 13 rainy days and 178 mm of rain. It is one of the wetter months, so keep indoor plans in reserve.
In May, Seoul averages highs of 24°C and lows of 13°C, with about 15 rainy days and 273 mm of rain. It is a good month to visit.
In June, Seoul averages highs of 28°C and lows of 19°C, with about 13 rainy days and 335 mm of rain. It is one of the wetter months, so keep indoor plans in reserve.
In July, Seoul averages highs of 29°C and lows of 23°C, with about 18 rainy days and 759 mm of rain. It is one of the wetter months, so keep indoor plans in reserve.
In August, Seoul averages highs of 30°C and lows of 24°C, with about 16 rainy days and 438 mm of rain. It is one of the wetter months, so keep indoor plans in reserve.
In September, Seoul averages highs of 27°C and lows of 18°C, with about 15 rainy days and 384 mm of rain. It is a good month to visit.
In October, Seoul averages highs of 21°C and lows of 11°C, with about 14 rainy days and 191 mm of rain. It is a good month to visit.
In November, Seoul averages highs of 12°C and lows of 3°C, with about 12 rainy days and 145 mm of rain. It is one of the wetter months, so keep indoor plans in reserve.
In December, Seoul averages highs of 4°C and lows of -5°C, with about 6 rainy days and 59 mm of rain. It is cold, so pack warm layers.
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May is the most comfortable month on average, with highs of 24°C. September and October are close behind.
July is the wettest month, with about 759 mm of rain.
August is the warmest month, with average highs of 30°C and lows of 24°C. The coldest nights come in January, averaging -6°C.
Averages for 2006–2025 from the SEOUL CITY weather station (1 km from the centre), NOAA Global Historical Climatology Network. Verdicts rate sightseeing comfort from daytime highs and rainy days.