Peak in August
Coolest in January
Heavy in July
Peak in dry season
Seoul Monthly Weather Guide
Click any month to explore daily weather forecasts
January
February
March
April
May
June
July
August
September
October
November
December
Essential Travel Info for Seoul
Currency
KRW
₩ South Korean won
Language
Korean
Driving
Right side
Connect
Internet cafes known asPC bang(PC 방) (pr...
Safety
High Safety
GPI: 1.779
Best Time to Visit Seoul
Location, climate overview & historical trends
Tap to Explore Map
📍 37.5665° N, 126.9780° E
Open in Google MapsSeoul is a prominent destination in South Korea.
Located at 37.57°N latitude,Seoul experiences a temperate climate with four distinct seasons.
Based on 30 years of data, August is the warmest month (avg. 29°C), while January is the coolest. July sees the most rain (44% chance), making January the driest month.
Historical Climate Trend
30-Year Analysis+1.45°C
Total over 30 years
+0.5°C
Per decade
Linear regression analysis of historical maximum temperatures for Seoul, based on 1995-2024 satellite data from NASA POWER.
Best Time to Visit
NASA POWER Data (1991-2021)April, May, June
Best months to visit
17°C
Avg High
Based on 30 years of NASA satellite data,Seoul receives approximately 685mm of rainfall annually. These months offer optimal temperatures and minimal rain probability for your visit.
Climate Trends
EXCLUSIVE1995-2040 Temperature Trend
1995 Avg
16.2°
2024 Avg
17.5°
2040 Proj
18.1°
+0.50°C
per decade (observed)
+0.37°C
per decade (CMIP6)
🌡️ Seoul has warmed by +1.4°C since 1995. By 2040, an additional +0.6°C is projected (based on CMIP6 rate of 0.37°C/decade), for a total of +2.0°C from 1995 baseline.
NASA POWER (1995-2024) + CMIP6 (CMCC_CM2_VHR4, EC_Earth3P_HR, FGOALS_f3_H, HiRAM_SIT_HR, MRI_AGCM3_2_S, NICAM16_8S)
Travel Intelligence
Exclusive flight analytics & health data for Seoul
Smart Flight Estimator
Airport-to-Airport Logistics
unlock smart flight estimates
Add your home location in settings to see airport details.
Flight Connectivity Analysis
Airport traffic data & seasonal patterns
Extremely busy airport
0
slots per day
Peak
Aug
Low
May
Monthly Traffic Distribution
Key Connections
Health & Safety Advisory
CDC travel health recommendations
COVID-19
All eligible travelers should be up to date with their COVID-19 vaccines. Please seeYour COVID-19 Vaccinationfor more information.
Hepatitis A
Recommended for unvaccinated travelers one year old or older going to South Korea.Infants 6 to 11 months old should also be vaccinated against Hepatitis A. The dose does not count toward the routine 2-dose series.Travelers allergic to a vaccine component should receive a single dose of immune globulin, which provides effective protection for up to 2 months depending on dosage given.Unvaccinated travelers who are over 40 years old, are immunocompromised, or have chronic medical conditions planning to depart to a risk area in less than 2 weeks should get the initial dose of vaccine and at the same appointment receive immune globulin.
Hepatitis B
Recommended for unvaccinated travelers younger than 60 years old traveling to South Korea. Unvaccinated travelers 60 years and older may get vaccinated before traveling to South Korea.
Japanese Encephalitis
Recommended for travelers whoAre moving to an area with Japanese encephalitis to liveSpend long periods of time, such as a month or more, in areas with Japanese encephalitisFrequently travel to areas with Japanese encephalitisConsider vaccination for travelersSpending less than a month in areas with Japanese encephalitis but will be doing activities that increase risk of infection, such as visiting rural areas, hiking or camping, or staying in places without air conditioning, screens, or bed netsGoing to areas with Japanese encephalitis who are uncertain of their activities or how long they will be thereNot recommended for travelers planning short-term travel to urban areas or travel to areas with no clear Japanese encephalitis season.
Malaria
CDC recommends that travelers going to certain areas of South Korea take prescription medicine to prevent malaria. Depending on the medicine you take, you will need to start taking this medicine multiple days before your trip, as well as during and after your trip. Talk to your doctor about which malaria medication you should take.Transmission areasLimited to the months of March–December in rural areas in the northern parts of the provinces of Incheon (also spelled Inch’ŏn), Gangwon (also spelled Kangwŏn), and Gyeonggi (also spelled Kyŏnggi), including the demilitarized zone (DMZ)Drug resistanceNoneSpeciesP. vivax(100%)Recommended chemoprophylaxisAtovaquone-proguanil, chloroquine, doxycycline, mefloquine, primaquine5, or tafenoquine2Updated April 23, 2025See footnotes
Measles
Cases of measles are on the rise worldwide. Travelers are at risk of measles if they have not been fully vaccinated at least two weeks prior to departure, or have not had measles in the past, and travel internationally to areas where measles is spreading.All international travelers should be fully vaccinated against measles with the measles-mumps-rubella (MMR) vaccine, including an early dose for infants 6–11 months, according toCDC’s measles vaccination recommendations for international travel.
+4 more
Source: CDC Travelers' Health
View Complete Health GuideSeoul Climate Data by Month
Historical temperature and precipitation averages
| Month | Avg High (°C) | Rain Probability (%) | Status |
|---|---|---|---|
| January | 2°C | 7% | ❄️ Cold |
| February | 5°C | 9% | Neutral |
| March | 11°C | 13% | Neutral |
| April | 17°C | 19% | 😊 Pleasant |
| May | 22°C | 21% | ✨ Perfect |
| June | 27°C | 24% | ✨ Perfect |
| July | 29°C | 44% | 🌧️ Rainy |
| August | 29°C | 39% | Neutral |
| September | 25°C | 24% | ✨ Perfect |
| October | 19°C | 14% | 😊 Pleasant |
| November | 11°C | 13% | Neutral |
| December | 3°C | 8% | ❄️ Cold |
Weather in Cities Near Seoul
Explore climate data for popular destinations within easy reach
Jeonju
South Korea
Busan
South Korea
Jeju Island
South Korea
Fukuoka
Japan
Hiroshima
Japan
Kobe
Japan
Compare weather conditions with nearby destinations for your trip planning
Compare Seoul Weather vs Popular Destinations
Similar Climate Destinations
Discover destinations with weather similar to Seoul
Almaty
Kazakhstan
Antwerp
Belgium
Auckland
New Zealand
Basel
Switzerland
Beijing
China
Berlin
Germany
These destinations share similar weather patterns with Seoul. Perfect alternatives if you're looking for the same climate in a different location.
Seoul Weather FAQ
When is the best time to visit Seoul?
Honestly, look for months with mild temperatures (20°C-25°C) and low rain chance. Based on historical data, April, May, June are usually great choices.
When is the hottest month in Seoul?
August is historically the hottest month in Seoul with average highs of 29°C.
When does it rain the most in Seoul?
July typically sees the highest probability of rain (44%).
Is Seoul expensive?
Prices vary by season. The "Perfect" weather months usually coincide with peak tourist season and higher prices, while the rainy or cold months offer better deals.