Our verdict
The best time to visit Incheon is May
In summer, the temperature in Incheon can rise as high as 32℃ (89℉). The weather at night in the winter can get down to temperatures as low as -10℃ (14℉).
If you’re a sun-chaser and want to visit Incheon when the days are longest, you should visit in June. The wet season in Incheon usually falls during the months surrounding July each year. It’s not uncommon to get some decent rainfall or light showers during this time, but on some days the weather tends to be fine for a majority of the day, with only a few drops of rain falling from a passing shower.
Keep reading to find all the info you need (and none of the stuff you don’t) about the best times to go to Incheon. By the time you get to the bottom, you’ll be ready to start booking your trip.
Quick links: Fast facts / Seasons / Average temperatures / Monthly climate / FAQs / Map
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Incheon seasons
Before you continue, it’s important to know when the seasons are in Incheon as they might be different to yours depending on where in the world you’re travelling from. Incheon 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 Incheon
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 Incheon 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.
Incheon 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 Incheon 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:
Incheon in January
- Average temperature: -2℃ (28℉)
- Average high temperature: 1℃ (33℉)
- Average low temperature: -4℃ (24℉)
- Average humidity: 62%
- Average sunny days: 23 days
- Average rainfall: 13mm (1") over 4 days
- Average snow days: 6 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Incheon 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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Incheon in February
- Average temperature: 1℃ (33℉)
- Average high temperature: 3℃ (38℉)
- Average low temperature: -2℃ (29℉)
- Average humidity: 59%
- Average sunny days: 22 days
- Average rainfall: 20mm (1") over 3 days
- Average snow days: 3 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Incheon 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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Incheon in March
- Average temperature: 6℃ (42℉)
- Average high temperature: 9℃ (48℉)
- Average low temperature: 3℃ (37℉)
- Average humidity: 59%
- Average sunny days: 22 days
- Average rainfall: 22mm (1") over 7 days
- Average snow days: 1 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Incheon 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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Incheon in April
- Average temperature: 11℃ (52℉)
- Average high temperature: 14℃ (58℉)
- Average low temperature: 8℃ (46℉)
- Average humidity: 62%
- Average sunny days: 20 days
- Average rainfall: 37mm (1") over 10 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Incheon in April, make sure you pack a warm jacket or coat.
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Incheon in May
- Average temperature: 17℃ (62℉)
- Average high temperature: 20℃ (68℉)
- Average low temperature: 13℃ (55℉)
- Average humidity: 68%
- 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 Incheon 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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Incheon in June
- Average temperature: 21℃ (70℉)
- Average high temperature: 25℃ (76℉)
- Average low temperature: 18℃ (64℉)
- Average humidity: 74%
- Average sunny days: 15 days
- Average rainfall: 59mm (2") over 12 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Incheon 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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Incheon in July
- Average temperature: 24℃ (76℉)
- Average high temperature: 27℃ (81℉)
- Average low temperature: 22℃ (72℉)
- Average humidity: 83%
- Average sunny days: 9 days
- Average rainfall: 179mm (7") over 19 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Incheon in July, make sure you pack t-shirts and light clothing.
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Incheon in August
- Average temperature: 26℃ (78℉)
- Average high temperature: 28℃ (83℉)
- Average low temperature: 23℃ (73℉)
- Average humidity: 78%
- Average sunny days: 10 days
- Average rainfall: 118mm (5") over 19 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Incheon in August, make sure you pack t-shirts and light clothing.
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Incheon in September
- Average temperature: 21℃ (70℉)
- Average high temperature: 24℃ (76℉)
- Average low temperature: 18℃ (65℉)
- Average humidity: 71%
- Average sunny days: 18 days
- Average rainfall: 65mm (3") over 10 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Incheon 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.
Incheon in October
- Average temperature: 15℃ (60℉)
- Average high temperature: 19℃ (66℉)
- Average low temperature: 13℃ (55℉)
- Average humidity: 64%
- Average sunny days: 23 days
- Average rainfall: 57mm (2") over 7 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Incheon in October, make sure you pack a light jumper or hoodie.
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Incheon in November
- Average temperature: 8℃ (47℉)
- Average high temperature: 11℃ (52℉)
- Average low temperature: 6℃ (43℉)
- Average humidity: 63%
- Average sunny days: 17 days
- Average rainfall: 39mm (2") over 10 days
- Average snow days: 1 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Incheon in November, make sure you pack a warm jacket or coat.
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Incheon in December
- Average temperature: 0℃ (33℉)
- Average high temperature: 3℃ (37℉)
- Average low temperature: -2℃ (29℉)
- Average humidity: 61%
- Average sunny days: 20 days
- Average rainfall: 22mm (1") over 7 days
- Average snow days: 6 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Incheon 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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