Temperature
Warm by day, warm at night.
Warm days and some sun. Typhoon risk near peak and humid air are the main drawbacks.
Warm by day, warm at night.
Rain is frequent. About 15 wet days, the highest monthly average.
Cloudier spells limit sunshine.
Very humid air is a major factor this month.
In August, afternoons feel about 89° and nights feel near 81°.
Mostly cloudy skies this month.
Calm winds are typical in August.
August late afternoons are around 83°F, easing to about 79°F in early evening.
| Month | High°F | Low°F | Rainin | Wet days | Sunh | Humidity% | Sea°F |
|---|---|---|---|---|---|---|---|
| Jan | 35 | 21 | 0.8 | 4 | 7.8 | 64 | 44 |
| Feb | 40 | 25 | 0.9 | 4 | 8.6 | 65 | 41 |
| Mar | 50 | 35 | 1.5 | 5 | 9.3 | 67 | 42 |
| Apr | 61 | 46 | 2.7 | 7 | 9.9 | 69 | 47 |
| May | 70 | 56 | 3.6 | 8 | 9.8 | 75 | 55 |
| Jun | 77 | 66 | 5.1 | 9 | 9.7 | 80 | 65 |
| Jul | 82 | 73 | 11.7 | 15 | 7.8 | 85 | 73 |
| Aug | 84 | 74 | 9.5 | 15 | 8.7 | 83 | 78 |
| Sep | 78 | 65 | 5.1 | 8 | 8.6 | 78 | 74 |
| Oct | 67 | 52 | 2.2 | 6 | 8.9 | 73 | 67 |
| Nov | 53 | 38 | 1.8 | 7 | 7.4 | 70 | 59 |
| Dec | 39 | 25 | 0.9 | 5 | 7.5 | 67 | 50 |
Similar climates
Want a side-by-side climate view? Compare Incheon with Barcelona.
Typical monthly values are based on long-term climate records. Useful for planning, not a forecast. Check the weather before you travel.
Sunshine: source type is not yet identified at metric level.
Local microclimates can vary by beach, neighborhood, trail, or elevation.
Last updated: Jun 1, 2026
Data & methodology