Our verdict
The best time to visit Seoul is April-June
In the height of summer, temperatures in Seoul can reach a maximum of 33℃ (92℉). In the colder months such as January, temperatures usually get down to an average minimum of -6℃ (21℉).
If you’re a sun-chaser and want to visit Seoul when the days are longest, you should visit in June. July sees the most amount of rain in a month if you’re ok with chancing getting drenched, so if you’re looking to stay dry, visit in January instead.
Learn everything you need to know (and none of the stuff you don’t) about when to go to Seoul below. Be sure to check out the handy tools we’ve included to help you search for flights and transport, accommodation, and everything else you need to plan and book your trip.
Quick links: Fast facts / Seasons / Average temperatures / Monthly climate / FAQs / Map
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Seoul seasons
Before you continue, it’s important to know when the seasons are in Seoul as they might be different to yours depending on where in the world you’re travelling from. Seoul is in the Northern Hemisphere, so the seasons fall during these months:
| Season | Months |
|---|---|
| Summer | June to August |
| Autumn/fall | September to November |
| Winter | December to February |
| Spring | March to May |
Average temperatures in Seoul
If the temperature is a big factor for you to help you decide when to visit, the chart below shows the average minimum and maximum temperatures in Seoul for each month side-by-side so you can easily see the difference in weather throughout the year. To see the temperatures in both Celsius (°C) and Fahrenheit (°F), hover or tap the shaded boxes on the graph.
Seoul climate by month
If you already have a rough idea about which months you might want to travel, the section below shows a detailed breakdown of the climate in Seoul for each month so you can see if it all suits your wants and needs. Scroll down, or use the quick menu below to jump to your preferred month.
Jump to:
Seoul in January
- Average temperature: -3℃ (26℉)
- Average high temperature: -0℃ (32℉)
- Average low temperature: -6℃ (21℉)
- Average humidity: 61%
- Average sunny days: 25 days
- Average rainfall: 13mm (1") over 3 days
- Average snow days: 4 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Seoul in January, make sure you pack a thick snow/winter jacket, thermals and some extra layers as it's always very cold.
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Seoul in February
- Average temperature: -0℃ (32℉)
- Average high temperature: 4℃ (38℉)
- Average low temperature: -3℃ (27℉)
- Average humidity: 57%
- Average sunny days: 22 days
- Average rainfall: 20mm (1") over 4 days
- Average snow days: 3 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Seoul in February, make sure you pack a thick snow/winter jacket, thermals and some extra layers as it's always very cold.
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Seoul in March
- Average temperature: 6℃ (42℉)
- Average high temperature: 10℃ (50℉)
- Average low temperature: 2℃ (35℉)
- Average humidity: 57%
- Average sunny days: 22 days
- Average rainfall: 22mm (1") over 7 days
- Average snow days: 2 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Seoul in March, make sure you pack a thick snow/winter jacket, thermals and some extra layers as it's always very cold.
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Seoul in April
- Average temperature: 11℃ (52℉)
- Average high temperature: 16℃ (61℉)
- Average low temperature: 7℃ (44℉)
- Average humidity: 59%
- Average sunny days: 20 days
- Average rainfall: 39mm (2") over 10 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Seoul in April, make sure you pack a warm jacket or coat.
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Seoul in May
- Average temperature: 17℃ (63℉)
- Average high temperature: 22℃ (72℉)
- Average low temperature: 12℃ (54℉)
- Average humidity: 65%
- Average sunny days: 21 days
- Average rainfall: 52mm (2") over 9 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Seoul in May, make sure you pack a light jumper or hoodie for the evenings and some light clothes for the daytime.
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Seoul in June
- Average temperature: 21℃ (71℉)
- Average high temperature: 26℃ (79℉)
- Average low temperature: 17℃ (63℉)
- Average humidity: 71%
- Average sunny days: 14 days
- Average rainfall: 62mm (2") over 13 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Seoul in June, make sure you pack t-shirts for the daytime and maybe a light jumper for the evenings as it cools down a bit.
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Seoul in July
- Average temperature: 25℃ (76℉)
- Average high temperature: 28℃ (83℉)
- Average low temperature: 21℃ (71℉)
- Average humidity: 81%
- Average sunny days: 9 days
- Average rainfall: 171mm (7") over 20 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Seoul in July, make sure you pack t-shirts and light clothing.
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Seoul in August
- Average temperature: 25℃ (78℉)
- Average high temperature: 29℃ (85℉)
- Average low temperature: 22℃ (72℉)
- Average humidity: 77%
- Average sunny days: 9 days
- Average rainfall: 114mm (4") over 19 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Seoul in August, make sure you pack t-shirts and light clothing.
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Seoul in September
- Average temperature: 21℃ (69℉)
- Average high temperature: 25℃ (77℉)
- Average low temperature: 17℃ (62℉)
- Average humidity: 72%
- Average sunny days: 18 days
- Average rainfall: 61mm (2") over 10 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Seoul in September, make sure you pack t-shirts for the daytime and maybe a light jumper for the evenings as it cools down a bit.
Seoul in October
- Average temperature: 15℃ (58℉)
- Average high temperature: 19℃ (66℉)
- Average low temperature: 11℃ (51℉)
- Average humidity: 65%
- Average sunny days: 23 days
- Average rainfall: 56mm (2") over 6 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Seoul in October, make sure you pack a warm jacket or coat.
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Seoul in November
- Average temperature: 7℃ (45℉)
- Average high temperature: 11℃ (51℉)
- Average low temperature: 4℃ (40℉)
- Average humidity: 63%
- Average sunny days: 18 days
- Average rainfall: 36mm (1") over 9 days
- Average snow days: 1 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Seoul in November, make sure you pack a thick snow/winter jacket, thermals and some extra layers as it's always very cold.
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Seoul in December
- Average temperature: -1℃ (30℉)
- Average high temperature: 2℃ (35℉)
- Average low temperature: -4℃ (26℉)
- Average humidity: 60%
- Average sunny days: 21 days
- Average rainfall: 21mm (1") over 6 days
- Average snow days: 5 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Seoul in December, make sure you pack a thick snow/winter jacket, thermals and some extra layers as it's always very cold.
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