Jeju Island Weather Forecast
Jeju Island weather: 88°F, mainly clear. Hourly forecast, 14-day outlook, UV, air quality and the best time to visit.
Summary
Jeju Island is an island in South Korea. Jeju Island is an island known for a volcanic island of waterfalls and trails.
Right now it is 88°F (31°C) in Jeju Island with mainly clear. It feels like 101°F. Today runs from 78°F to 92°F. Chance of precipitation is 73%. Sightseeing conditions score 4.9/10 - marginal.
The best time to visit Jeju Island is May. The climate is continental. January, February and March tend to be the least comfortable months. August is the warmest month with average highs near 87°F, while January is the coldest with lows near 38°F.
The closest major airport is Incheon International Airport (ICN), about 274 mi away. Nearby highlights include Hyeopjae Beach and Haeundae Beach.
In plain terms. Today is slightly warmer than average for August. The forecast high of 92°F is 5°F above the 87°F typical for this month. The best window to be outside is roughly 7 AM to 10 AM, when temperature, rain chance and wind line up best. beach day is the strongest bet in Jeju Island today at 7.6/10. Visibility is down to 0,7 mi - use low beams and leave extra following distance. Wet roads are likely; braking distances roughly double in heavy rain.
Compiled from this page's own data: atlas facts plus live Open-Meteo readings.
Weather in Jeju Island right now
Use SPF 30+, a hat and sunglasses; seek shade near midday.
Source: Open-Meteo. Updated 2:52 AM, Aug 24 local time.
See the Jeju Island forecast by time range
Next 24 hours
Hour-by-hour temperature, precipitation chance and wind.
16-day forecast for Jeju Island
Daily highs and lows, precipitation and UV.
| Day | Conditions | High / Low | Precip | Wind | UV |
|---|---|---|---|---|---|
| Sun, Aug 23 | 🌤️ Mainly clear | 92° / 78° | 73% | 6 mph | 8 |
| Mon, Aug 24 | 🌤️ Mainly clear | 85° / 78° | 90% | 7 mph | 7 |
| Tue, Aug 25 | ☀️ Clear sky | 86° / 76° | 47% | 11 mph | 8 |
| Wed, Aug 26 | 🌦️ Light drizzle | 86° / 76° | 28% · 0,0 in | 7 mph | 8 |
| Thu, Aug 27 | 🌦️ Light drizzle | 86° / 77° | 47% · 0,0 in | 7 mph | 8 |
| Fri, Aug 28 | ⛈️ Thunderstorm | 88° / 76° | 80% · 0,1 in | 4 mph | 8 |
| Sat, Aug 29 | ⛈️ Thunderstorm | 85° / 80° | 73% · 0,3 in | 5 mph | 8 |
| Sun, Aug 30 | ⛈️ Thunderstorm | 86° / 81° | 77% · 0,2 in | 10 mph | 4 |
| Mon, Aug 31 | 🌦️ Drizzle | 82° / 80° | 76% · 0,1 in | 9 mph | 2 |
| Tue, Sep 1 | 🌦️ Light showers | 79° / 74° | 67% · 0,6 in | 7 mph | 1 |
| Wed, Sep 2 | ☁️ Overcast | 80° / 75° | 75% | 10 mph | 0 |
| Thu, Sep 3 | 🌦️ Light showers | 78° / 73° | 78% · 0,8 in | 16 mph | 1 |
| Fri, Sep 4 | 🌦️ Light showers | 77° / 74° | 78% · 1,1 in | 21 mph | 1 |
| Sat, Sep 5 | 🌦️ Drizzle | 80° / 75° | 73% · 0,3 in | 17 mph | 3 |
| Sun, Sep 6 | 🌦️ Light showers | 79° / 66° | 51% · 0,6 in | 15 mph | 8 |
| Mon, Sep 7 | 🌤️ Mainly clear | 81° / 65° | 30% | 10 mph | 8 |
Climate in Jeju Island month by month
Average high, average low and total rainfall, based on three years of reanalysis data.
| Month | Avg high | Avg low | Rainfall | Rating |
|---|---|---|---|---|
| January | 47° | 38° | 3,8 in | ★★★☆☆ |
| February | 49° | 40° | 6,1 in | ★★☆☆☆ |
| March | 56° | 45° | 7,0 in | ★★★☆☆ |
| April | 65° | 54° | 6,3 in | ★★★☆☆ |
| May | 71° | 60° | 5,7 in | ★★★★☆ |
| June | 77° | 69° | 10,0 in | ★★★☆☆ |
| July | 86° | 78° | 7,3 in | ★★★☆☆ |
| August | 87° | 78° | 6,1 in | ★★★☆☆ |
| September | 83° | 75° | 6,7 in | ★★★☆☆ |
| October | 72° | 64° | 5,9 in | ★★★☆☆ |
| November | 62° | 52° | 7,2 in | ★★★☆☆ |
| December | 52° | 42° | 3,4 in | ★★★☆☆ |
Climate type: Continental. Source: Open-Meteo archive (ERA5).
Weather map for Jeju Island
Animated model layers. Pick a layer to load it.
Animated layers by Windy. For pin-level detail and nearby places, see the interactive map below.
Air quality and pollen in Jeju Island
Air quality: Open-Meteo (CAMS). US AQI scale.
Sun, twilight and moon
Golden and blue hour are the standard photographic approximation around sunrise and sunset.
Best time to visit Jeju Island
Go in May. These months score highest on comfortable temperatures, low rainfall and useful daylight.
Hardest months: January, February and March - expect the least comfortable mix of heat, cold or rain.
Weather by beach in Jeju Island
1 beaches mapped in this atlas
Explore Jeju Island
Every topic we hold for this place, and the same topic for the places around it.
Weather for related places
Frequently asked questions
Where is Jeju Island?
Jeju Island is an island in South Korea. Its coordinates are 33.4996, 126.5312. It lies in Asia.
What is the weather like in Jeju Island right now?
It is currently 88°F (31°C) with mainly clear. Humidity is 72% and wind is 3 mph.
When is the best time to visit Jeju Island?
May offer the most comfortable conditions in Jeju Island, which has a continental climate. January, February and March are usually the hardest months for outdoor plans.
What time zone is Jeju Island in?
Jeju Island observes Asia/Seoul (UTC+09:00). The local time is 2:52 AM.
What is the nearest airport to Jeju Island?
The closest airports are Incheon International Airport (ICN), 274 mi away.
What are the top things to do in Jeju Island?
Popular options include Hyeopjae Beach and Haeundae Beach.
What places are in Jeju Island?
Jeju Island covers 1 places in this atlas, including Hyeopjae Beach.
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| Place data | USPOTUS Atlas dataset (islands) - coordinates, hierarchy and facts. |
|---|---|
| Forecast and observations | Open-Meteo (ECMWF and national models). |
| Air quality and pollen | Copernicus CAMS via Open-Meteo. US AQI scale. |
| Climate averages | ERA5 reanalysis via the Open-Meteo archive, aggregated over 3 years. |
| Method | Scores, comparisons and advice on this page are computed from the inputs above. Distances are straight-line. Nothing is estimated where data is missing - the block is simply not shown. |
Last updated August 24, 2026 at 2:52 AM local time. Live blocks refresh every 15 minutes; climate averages monthly.
