When is the best time to go to Jeju
The chart above shows the best time of year to visit Jeju, South Korea. These are based on an analysis of weather averages such as temperature, rainfall and number of hours of sunshine. These ratings are based solely on the climate and do not take into account other factors such as accommodation prices and how busy it is likely to be.
Average temperatures in Jeju
Jeju weather by month
Please note our recommendations for when to visit Jeju are based solely on the weather and do not take into accounts accommodation prices, how busy it will be and what events are on.
January
| Temp | Rain | Sunshine | Day length | Sea temp |
|---|---|---|---|---|
| 6°C | 59mm | 4.4hrs | 11.1hrs | 14°C |
Cool and reasonably dry weather often prevails in Jeju during the month of January
Although outside the main holiday season, there is still plenty of reasonably acceptable weather around this time of year. This makes it an okay time to visit Jeju.
January is in the winter in Jeju and is typically the coldest month of the year. Daytime maximum temperatures average around a cold 7°C (44°F), whilst at night -0°C (32°F) is normal.
On average January is the driest month of the year in Jeju with around 59mm 2.3 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 12 days, although this may vary considerably.
On the flip side this corresponds to an average of 4.4 hours of sunshine per day.
February
| Temp | Rain | Sunshine | Day length | Sea temp |
|---|---|---|---|---|
| 7°C | 78mm | 5.2hrs | 11.8hrs | 13°C |
February in Jeju is generally reasonably dry with the temperature being cool.
Based on weather alone, this is probably a time of year to avoid going to Jeju for your holidays. The weather is often relatively bad and not conducive to spending time outdoors.
February is in the winter in Jeju and is typically the 2nd coldest month of the year. Daytime maximum temperatures average around a cold 7°C (45°F), whilst at night 0°C (33°F) is normal.
On average February is the 2nd driest month of the year in Jeju with around 78mm 3.1 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 11 days, although this may vary considerably.
On the flip side this corresponds to an average of 5.2 hours of sunshine per day.
March
| Temp | Rain | Sunshine | Day length | Sea temp |
|---|---|---|---|---|
| 10°C | 97mm | 6.5hrs | 12.7hrs | 13°C |
The weather in March in Jeju is characteristically cool and a little damp.
Although outside the main holiday season, there is still plenty of pretty acceptable weather around this time of year. This makes it an okay time to visit Jeju.
March is in the spring in Jeju and is typically the 3rd coldest month of the year. Daytime maximum temperatures average around a cool 11°C (51°F), whilst at night 3°C (37°F) is normal.
On average March is the 3rd driest month of the year in Jeju with around 97mm 3.8 inches of rain making it a a little damp time to visit. This rainfall is typically spread over 11 days, although this may vary considerably.
On the flip side this corresponds to an average of 6.5 hours of sunshine per day.
April
| Temp | Rain | Sunshine | Day length | Sea temp |
|---|---|---|---|---|
| 14°C | 145mm | 7hrs | 13.8hrs | 14°C |
Jeju's weather in April is typically mild and wet in nature.
Based on weather alone, this is probably a time of year to avoid going to Jeju for your holidays. The weather is often relatively bad and not conducive to spending time outdoors.
April is in the spring in Jeju and is typically the 4th coldest month of the year. Daytime maximum temperatures average around a cool 16°C (60°F), whilst at night 7°C (45°F) is normal.
On average April is the 4th driest month of the year in Jeju with around 145mm 5.7 inches of rain making it a wet time to visit. This rainfall is typically spread over 11 days, although this may vary considerably.
On the flip side this corresponds to an average of 7 hours of sunshine per day.
May
| Temp | Rain | Sunshine | Day length | Sea temp |
|---|---|---|---|---|
| 18°C | 155mm | 7.5hrs | 14.7hrs | 16°C |
May is a wet month in Jeju and the temperature is generally mild.
Based on weather alone, this is probably a time of year to avoid going to Jeju for your holidays. The weather is often relatively bad and not conducive to spending time outdoors.
May is in the spring in Jeju and is typically the 5th coldest month of the year. Daytime maximum temperatures average around 20°C (67°F), whilst at night 12°C (53°F) is normal.
On average May is the 5th driest month of the year in Jeju with around 155mm 6.1 inches of rain making it a wet time to visit. This rainfall is typically spread over 10 days, although this may vary considerably.
On the flip side this corresponds to an average of 7.5 hours of sunshine per day.
June
| Temp | Rain | Sunshine | Day length | Sea temp |
|---|---|---|---|---|
| 20°C | 252mm | 6.5hrs | 11.1hrs | 20°C |
The climate in Jeju during June can be summarized as warm and very wet.
Although outside the main holiday season, there is still plenty of relatively acceptable weather around this time of year. This makes it an okay time to visit Jeju.
June is in the summer in Jeju and is typically the 6th coldest month of the year. Daytime maximum temperatures average around 23°C (73°F), whilst at night 16°C (61°F) is normal.
On average June is the 6th driest month of the year in Jeju with around 252mm 9.9 inches of rain making it a very wet time to visit. This rainfall is typically spread over 13 days, although this may vary considerably.
On the flip side this corresponds to an average of 6.5 hours of sunshine per day.
July
| Temp | Rain | Sunshine | Day length | Sea temp |
|---|---|---|---|---|
| 24°C | 280mm | 6.5hrs | 11.8hrs | 24°C |
July in Jeju is generally very wet with the temperature being hot.
It is perhaps a good month to visit Jeju, with some extremely good weather at this time of year.
July is in the summer in Jeju and is typically the 6th 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.
On average July is the 6th 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.
August
| Temp | Rain | Sunshine | Day length | Sea temp |
|---|---|---|---|---|
| 25°C | 248mm | 7.8hrs | 12.7hrs | 27°C |
The weather in August in Jeju is characteristically hot, humid and very wet.
It is perhaps the perfect month to visit Jeju, with some extremely good weather at this time of year.
August is in the summer in Jeju and is typically the 5th warmest month of the year. Daytime maximum temperatures average around a muggy 28°C (82°F), whilst at night 22°C (71°F) is normal.
On average August is the 5th wettest month of the year in Jeju with around 248mm 9.8 inches of rain making it a very wet time to visit. This rainfall is typically spread over 12 days, although this may vary considerably.
On the flip side this corresponds to an average of 7.8 hours of sunshine per day.
September
| Temp | Rain | Sunshine | Day length | Sea temp |
|---|---|---|---|---|
| 22°C | 180mm | 6.8hrs | 13.8hrs | 25°C |
Jeju's weather in September is typically warm, humid and wet in nature.
It is perhaps a good month to visit Jeju, with some inordinately good weather at this time of year.
September is in the fall / autumn in Jeju and is typically the 4th warmest month of the year. Daytime maximum temperatures average around a muggy 24°C (76°F), whilst at night 18°C (64°F) is normal.
On average September is the 4th wettest month of the year in Jeju with around 180mm 7.1 inches of rain making it a wet time to visit. This rainfall is typically spread over 11 days, although this may vary considerably.
On the flip side this corresponds to an average of 6.8 hours of sunshine per day.
October
| Temp | Rain | Sunshine | Day length | Sea temp |
|---|---|---|---|---|
| 18°C | 81mm | 7hrs | 14.7hrs | 22°C |
October is a a little damp month in Jeju and the temperature is generally mild.
It is perhaps the perfect month to visit Jeju, with some surprisingly good weather at this time of year.
October is in the fall / autumn in Jeju and is typically the 3rd warmest month of the year. Daytime maximum temperatures average around 20°C (68°F), whilst at night 12°C (54°F) is normal.
On average October is the 3rd wettest month of the year in Jeju with around 81mm 3.2 inches of rain making it a a little damp time to visit. This rainfall is typically spread over 8 days, although this may vary considerably.
On the flip side this corresponds to an average of 7 hours of sunshine per day.
November
| Temp | Rain | Sunshine | Day length | Sea temp |
|---|---|---|---|---|
| 13°C | 76mm | 5.8hrs | 11.1hrs | 19°C |
The weather in November in Jeju is characteristically mild and reasonably dry.
Although outside the main holiday season, there is still plenty of relatively acceptable weather around this time of year. This makes it an okay time to visit Jeju.
November is in the fall / autumn in Jeju and is typically the 2nd warmest month of the year. Daytime maximum temperatures average around a cool 15°C (58°F), whilst at night 7°C (44°F) is normal.
On average November is the 2nd wettest month of the year in Jeju with around 76mm 3 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 9 days, although this may vary considerably.
On the flip side this corresponds to an average of 5.8 hours of sunshine per day.
December
| Temp | Rain | Sunshine | Day length | Sea temp |
|---|---|---|---|---|
| 8°C | 46mm | 4.6hrs | 11.8hrs | 16°C |
December in Jeju is generally reasonably dry with the temperature being cool.
Although outside the main holiday season, there is still plenty of pretty acceptable weather around this time of year. This makes it an okay time to visit Jeju.
December is in the winter in Jeju and is typically the warmest month of the year. Daytime maximum temperatures average around a cool 9°C (49°F), whilst at night 2°C (36°F) is normal.
On average December is the wettest month of the year in Jeju with around 46mm 1.8 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 11 days, although this may vary considerably.
On the flip side this corresponds to an average of 4.6 hours of sunshine per day.
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 |
| Warmest sea: | August | 27.1°C 80.8°F |
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