Jeju Weather in July
What's the weather like in Jeju (Jeju) in July 2025?
The climate in Jeju during July can be summarized as hot, humid and very wet.
July is in the summer in Jeju and is typically the 2nd warmest month of the year. Daytime maximum temperatures average around a muggy 26°C (80°F), whilst at night 21°C (70°F) is normal.
| Daytime temperature | 26.4°C 79.6°F |
|---|---|
| Nightly temperature | 20.9°C 69.7°F |
| Average temperature | 23.7°C 74.6°F |
| Daily sunshine | 6.5 hrs |
| Avg rainfall | 280 mm 11 ins |
| Rainy days | 14 days |
| Sea temperature | 24.4°C 75.8°F |
| Humidity | 86% |
| Windspeed | 11.1kph 7 mph |
On average July is the wettest month of the year in Jeju with around 280mm 11 inches of rain making it a very wet time to visit. This rainfall is typically spread over 14 days, although this may vary considerably.
On the flip side this corresponds to an average of 6.5 hours of sunshine per day.
July temperatures in Jeju
July rainfall
July hourly sunshine
The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Jeju in July 2025.
Other monthly averages
Jeju weather stats
| Hottest month: | August | 27.7°C 81.9°F |
|---|---|---|
| Driest month: | December | 46mm 1.8ins |
| Sunniest month: | October | 7hrs |
| Coldest month: | January | 6.4°C 43.5°F |
| Wettest month: | July | 280mm 11ins |
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