Temperature
Pleasant by day, mild at night.
Warm days and some sun.

Pleasant by day, mild at night.
Several rainy days. About 12 wet days, the highest monthly average.
Cloudier spells limit sunshine.
Humid air and frequent rain shape this month.
In June, afternoons feel about 77° and nights feel near 72°.
Mostly cloudy skies this month.
Calm winds are typical in June.
June late afternoons are around 76°F, easing to about 74°F in early evening.
| Month | High°F | Low°F | Rainin | Wet days | Sunh | Humidity% |
|---|---|---|---|---|---|---|
| Jan | 49 | 41 | 2.0 | 8 | 8.0 | 65 |
| Feb | 50 | 42 | 2.4 | 8 | 8.5 | 65 |
| Mar | 55 | 46 | 4.0 | 11 | 8.8 | 66 |
| Apr | 63 | 54 | 4.6 | 10 | 9.2 | 69 |
| May | 71 | 62 | 5.1 | 10 | 9.9 | 73 |
| Jun | 76 | 69 | 7.1 | 12 | 8.6 | 79 |
| Jul | 83 | 76 | 6.6 | 12 | 9.8 | 81 |
| Aug | 86 | 79 | 3.7 | 9 | 10.5 | 77 |
| Sep | 80 | 73 | 6.1 | 11 | 8.9 | 73 |
| Oct | 72 | 64 | 4.7 | 9 | 8.3 | 68 |
| Nov | 62 | 54 | 2.3 | 7 | 8.0 | 67 |
| Dec | 53 | 45 | 2.1 | 8 | 8.1 | 66 |
Similar climates
Want a side-by-side climate view? Compare Okayama with Tokyo.
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: Aug 26, 2026
Data & methodology