Temperature range
Typical highs and lows
High28.8°C
Low-7.0°C
The broad yearly range between warm daytime highs and the coolest overnight lows.
South Korea Seoul, South Korea
The climate in Seoul is temperate, with annual average temperatures spanning 2°C / 35°F during January up to 29°C / 84°F in August.
Precipitation is distributed throughout the year, averaging 104 mm / 4.1 inches monthly, peaking in July (319 mm / 12.6 inches) and reaching its lowest in January (19 mm / 0.75 inches).
The UV index ranges from 3 in December to 8 in June, so strong sun protection is essential during summer months.
Daylight hours range from about 9.6 hours in December to 14.7 hours in June.
Trip planning
Plan your trip
Find the best dates. Understand the conditions. Pack with confidence.
Climate overview
Climate at a glance
The big-picture stats that matter for planning your visit to Seoul.
Rain pattern
Wettest point of the year
319 mm
July carries the highest typical rainfall load.
Sun exposure
Typical peak UV band
High (6.1)
A fast read on how strong midday sun typically gets across the year.
Daylight window
Seasonal daylight range
10 hrsto15 hrs
Useful for gauging how much sightseeing time you get in shorter versus longer seasons.
Wind profile
Typical breeze strength
9 km/h
March is typically the breeziest month.
Humidity
Typical moisture range
60 %to84 %
A quick signal for how dry, comfortable, or heavy the air tends to feel.
When should I go?
Our top-rated months for visiting Seoul, based on long-term weather comfort and conditions
Typical weather by month
Compare all monthsTip: click on a card to see detailed daily weather averages for that month.
How Seoul compares
See how it ranks against the rest of South Korea for key metrics.
HOTTEST (AVG)
in South Korea
#2 / 2
COOLEST (AVG)
in South Korea
#1 / 2
WETTEST (TOTAL)
in South Korea
#2 / 2
WINDIEST (AVG)
in South Korea
#2 / 2
HIGHEST UV
in South Korea
#2 / 2
MOST HUMID
in South Korea
#1 / 2
Short term outlook
Visiting soon? Here's the next 7 days of weather for Seoul, or see an hourly breakdown for the next 14 days.
Travel planning FAQ
Frequently asked questions
Quick answers to the weather questions you ask the most.
How does the weather in Seoul feel over the year?
Across the year, daytime highs average about 16°C (61°F), with nights near 7°C (45°F). Overall it feels mild by day and cold after dark. Daylight is fairly typical, with enough time for sightseeing. Expect a mix of sun and cloud across the year.
When is the best time to visit Seoul for dry weather?
When is sun exposure strongest in Seoul?
UV tends to peak in June, when UV levels frequently reach very high levels (around 8), so strong sun protection is essential, especially around midday.
Is Seoul a windy place?
Across the year, average winds sit around 9 km/h (6 mph), with gusts on windier days up to about 56 km/h (35 mph). Overall it is it can feel quite windy at times, particularly when weather systems move through.
How much daylight does Seoul get?
On average, days offer about 12 hours of daylight. Daylight is fairly typical, with enough time for sightseeing.