Seoul vs Tokyo weather, all year round
Seoul's average temperature is 4.1°C lower than Tokyo's (12.6°C against 16.7°C).
Seoul and Tokyo are about the same for rainfall (1470 mm against 1471 mm).
Best time to visit
Seoul's most comfortable months are May, June and September. Tokyo's are May, June and October. Both score 70 or more out of 100 in May and October.
Seoul's most comfortable month is May, Tokyo's is October. The least comfortable month is March in Seoul and February in Tokyo.
The lead in comfort score changes hands during the year: Seoul from late January to mid April, then Tokyo from mid April to early May, then Seoul from mid May to mid October, then Tokyo from mid October to mid January.
Seoul and Tokyo are about the same for comfort score (50/100 against 49/100).
Weekly averages over three years.
Temperature
Seoul's average temperature is 4.1°C lower than Tokyo's (12.6°C against 16.7°C).
Both cities have their hottest month in August. The coolest month is January for both.
Seoul's average daytime high is 3.9°C lower than Tokyo's (17.5°C against 21.3°C).
Seoul's average nighttime low is 4.3°C lower than Tokyo's (8.4°C against 12.6°C).
Seoul gets 42% fewer days above 30°C (86°F) than Tokyo (46 days against 79 days).
Seoul gets 331% more days below freezing than Tokyo (111 days against 26 days).
Weekly averages over three years.
Feels like and humidity
Seoul's average feels-like temperature is 4.4°C lower than Tokyo's (11.7°C against 16.1°C).
Both cities have their hottest feeling month in August. The coolest feeling month is January for both.
Seoul and Tokyo are about the same for humidity (72% against 71%).
Seoul's most humid month is August, Tokyo's is June. The driest month is January in Seoul and February in Tokyo.
Seoul gets 19% fewer muggy days than Tokyo (94 days against 116 days).
Weekly averages over three years.
Rainfall
Seoul and Tokyo are about the same for rainfall (1470 mm against 1471 mm).
Seoul gets 13% fewer rainy days than Tokyo (111 days against 127 days).
Seoul's wettest month is July, Tokyo's is June. The driest month is February in Seoul and December in Tokyo.
Monthly totals, averaged over three years.
Sunshine
Seoul and Tokyo are about the same for sunshine (3012 h against 3043 h).
Both cities have their sunniest month in August. The dullest month is February in Seoul and October in Tokyo.
Weekly averages over three years.
Wind
Seoul gets 32% less wind than Tokyo (15 km/h against 22 km/h).
Seoul gets 93% fewer windy days than Tokyo (5 days against 74 days).
Seoul's windiest month is March, Tokyo's is February. The calmest month is September in Seoul and December in Tokyo.
Weekly averages over three years.
Snowfall
Seoul gets 115% more snowfall than Tokyo (34 cm against 16 cm).
Seoul's snowiest month is January, Tokyo's is February. The least snowy month is May for both.
Monthly totals, averaged over three years.
Daylight
Seoul and Tokyo are about the same for daylight (12 h against 12 h).
Weekly averages over three years.
Averages of daily data from 2023 to 2025. Weather data by Open-Meteo.com (CC BY 4.0).