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When is the best time to visit Seoul?
In general the best time to visit Seoul is probably August, when the weather is usually great. The hottest months are June, July, August, while the coldest months are January, February, December.
Depending on the activities you want to experience, you may choose different months to visit:
- The best time for a sun tanning holiday is June, July, August. Average maximum temperatures are up to +86°F in August and it has 4 sunny days on average.
- In general, it’s pleasant to walk and do outdoor activities during May - October.
- If you want to avoid wet weather, then your choice is July, August, September with the lowest chance of rain.
Average weather in Seoul in different months
This is the average weather in Seoul for each month based on historic data:
January, February, March, April, May, June, September, October, November, December usually has good weather. Average maximum temperature reaches +81°F during June.
In July, August the weather is average. Expect around 28 rainy days, and the precipitation amounts to approximately 261 mm in July.
Climate in Seoul
Here is the detailed breakdown of the climate in Seoul for each month:
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Maximum Temperature | |||||||||||
| +59°F | +66°F | +75°F | +86°F | +91°F | +95°F | +100°F | +100°F | +91°F | +84°F | +77°F | +63°F |
| Average Maximum Temperature | |||||||||||
| +36°F | +41°F | +52°F | +63°F | +73°F | +81°F | +84°F | +86°F | +79°F | +68°F | +52°F | +39°F |
| Minimum Temperature | |||||||||||
| -9°F | -2°F | +16°F | +28°F | +41°F | +52°F | +59°F | +57°F | +41°F | +27°F | +12°F | 0°F |
| Avg. water temperature | |||||||||||
| - | - | - | - | - | - | - | - | - | - | - | - |
| Humidity, % | |||||||||||
| 63 | 61 | 60 | 60 | 64 | 70 | 78 | 77 | 72 | 68 | 67 | 65 |
| Rain, mm | |||||||||||
| 10 | 16 | 34 | 62 | 86 | 121 | 261 | 223 | 117 | 47 | 45 | 15 |
| Snow, mm | |||||||||||
| 9 | 6 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 6 |
| Average wind speed, m/s | |||||||||||
| 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 |
| Sunny Days | |||||||||||
| 14 | 13 | 12 | 11 | 11 | 7 | 3 | 4 | 10 | 14 | 11 | 13 |
| Cloud Days | |||||||||||
| 10 | 9 | 11 | 9 | 10 | 12 | 10 | 8 | 9 | 9 | 9 | 10 |
| Rainy Days | |||||||||||
| 2 | 2 | 7 | 8 | 8 | 9 | 14 | 14 | 10 | 7 | 8 | 4 |
| Snowy Days | |||||||||||
| 5 | 3 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 4 |
Average Temperature
Here are the average maximum and minimum temperatures in Seoul during the whole year:
The hottest month in Seoul is August with average maximum temperature going up to +86°F. The coldest month is January with the lowest temperatures of +18°F.
Humidity
The temperature feels different depending on humidity. Here is how humidity in Seoul looks throughout the year, in %:
The most humid month in Seoul is July with average humidity going up to 78%. The least humid month is March with an average humidity of 60%.
Rain
Amount of rainfall in mm. in Seoul during the whole year based on historical data:
The sunniest and driest month is January with approximately 14 sunny days and a total precipitation of around 10 mm. The rainiest and wettest month is July with approximately 14 rainy days and 261 mm of total precipitation.
Snow
Amount of snow in mm. in Seoul during the whole year based on historical data:
The snowiest month is January with approximately 5 snowy days.
FAQ
Frequently asked questions about the weather in Seoul:
What is the hottest month in Seoul?
The hottest month in Seoul is August with average maximum temperature of +86°F.
What is the coldest month in Seoul?
The coldest month in Seoul is January with minimum temperatures of +18°F.
Is Seoul worth visiting in winter?
If you are planning to visit Seoul in winter you can expect pretty good weather. The best month is August with +86°F and 4 sunny days.
When does it rain the least in Seoul?
if you're looking to visit Seoul when it rains the least, you should plan your trip for July, August, June. During this time, rainfall is rare with the driest month being January with only 10 mm of rain.
Other cities in South Korea
Check out the weather for other cities in South Korea.
Monthly weather in Seoul
Source of the data
For this page, we’ve looked at the typical weather in Seoul, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.