Climate averages 1991–2020
Jeju City weather
in October.
A mild, moderately wet month: the 5th warmest and the 5th driest of the year. Meets the pleasant-weather rule
Long-term climate patterns, not a forecast for a particular trip.
October is a mild month in Jeju City: daytime highs average 20.7°C and nights cool to about 17.4°C. By daytime temperature it is the 5th warmest of the 12 months.
Expect about 79 mm of rain on roughly 7 days, which makes October a moderately wet month (the 5th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 11 h 22 min on an average October day.
The nearest other city in this atlas is Seogwipo (29 km away). In October its highs average 21.3°C, 0.6°C warmer than Jeju City, with 86 mm of rain.
Among the 79 cities listed in South Korea, Jeju City ranks joint 3rd of 79 for the warmest October highs and 76th of 79 for the driest October (rainfall, lowest first). The mean October high of those 79 cities is 19.3°C; Jeju City is 1.4°C warmer than that mean.
From October to November, average highs fall by 5.0°C to 15.8°C, and monthly rainfall falls from 79 mm to 70 mm.
The annual picture
October in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Jeju City climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 8.0°C4.7°C | 4.7°C | 73 | 11.7 | 10.210 h |
| February | 9.1°C5.0°C | 5.0°C | 65 | 9.4 | 11.011 h |
| March | 12.2°C7.5°C | 7.5°C | 94 | 10.3 | 12.012 h |
| April | 16.4°C11.4°C | 11.4°C | 102 | 8.9 | 13.013 h |
| May | 20.1°C15.5°C | 15.5°C | 109 | 8.8 | 13.914 h |
| June | 23.5°C19.7°C | 19.7°C | 189 | 11.5 | 14.314 h |
| July | 27.6°C24.3°C | 24.3°C | 184 | 12.1 | 14.114 h |
| August | 28.7°C25.7°C | 25.7°C | 168 | 13.7 | 13.413 h |
| September | 25.3°C22.3°C | 22.3°C | 165 | 11.1 | 12.412 h |
| October, selected | 20.7°C17.4°C | 17.4°C | 79 | 6.7 | 11.411 h |
| November | 15.8°C11.9°C | 11.9°C | 70 | 8.8 | 10.510 h |
| December | 10.5°C6.8°C | 6.8°C | 68 | 11.0 | 10.010 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
October in nearby cities
- Seogwipo in OctoberSouth Korea · 29 kmHigh 21.3°C · Low 16.7°C · 86 mm rain
- Mokpo in OctoberSouth Korea · 145 kmHigh 19.5°C · Low 13.2°C · 56 mm rain
- Muan in OctoberSouth Korea · 165 kmHigh 20.1°C · Low 12.1°C · 52 mm rain
- Yeosu in OctoberSouth Korea · 174 kmHigh 19.9°C · Low 14.4°C · 71 mm rain
- Masan in OctoberSouth Korea · 182 kmHigh 20.4°C · Low 10.4°C · 55 mm rain
- Suncheon in OctoberSouth Korea · 183 kmHigh 20.9°C · Low 11.7°C · 66 mm rain
- Gwangju in OctoberSouth Korea · 186 kmHigh 20.2°C · Low 10.1°C · 56 mm rain
- Kwangyang in OctoberSouth Korea · 190 kmHigh 20.7°C · Low 12.3°C · 66 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Jeju City) is explained once on the Jeju City year overview and on the Sources, method and limits page.