Temperature
Warm by day, warm at night.
Warm days and some sun. Heavier storm-season rain and humid air are the main drawbacks.

Warm by day, warm at night.
Several rainy days. About 12 wet days, the highest monthly average.
Cloudier spells limit sunshine.
Very humid air is a major factor this month.
In July, afternoons feel about 88° and nights feel near 83°.
Mostly cloudy skies this month.
Calm winds are typical in July.
July late afternoons are around 83°F, easing to about 81°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