Okayama Climate by Month
Okayama, Japan
Hot summers and cool winters, with rain spread through the year.
The climate in Okayama is one of hot summers and cool winters, with rain spread through the year. Expect highs of 91°F (33°C) in August and 49°F (9°C) in January, with the coldest nights (January) near 33°F (1°C). It gets 56 in (1433 mm) of rain a year, spread across the months.
- Warmest month
- 91°F(33°C)
- Average high, August
- Coldest nights
- 33°F(1°C)
- Average low, January
- Rain per year
- 56 in(1433 mm)
- No clear rainy season
- Humidity
- 70%
- Sunniest: May
Best and worst months in Okayama
Best for weatherThe most comfortable weather comes in May and October, with highs around 75°F (24°C) and about 5.3 in (136 mm) of rain a month.
Least pleasantJanuary and July are the least pleasant; July is the wettest, with 8.9 in (225 mm) of rain.
Comfort combines how close the afternoon high is to 75°F (24°C) with how much rain falls and how humid it is. See where the weather is best in October.
Temperature and rain through the year
Highs and lows (°F)
Average highAverage low
Rain (in per month)
Okayama weather by month
| Month | High | Low | Rain | Humidity | Sun |
|---|---|---|---|---|---|
| JanJanuary | 49°F(9°C) | 33°F(1°C) | 1.7 in(42 mm) | 69% | 2.3 |
| FebFebruary | 50°F(10°C) | 34°F(1°C) | 2.0 in(50 mm) | 66% | 3.0 |
| MarMarch | 57°F(14°C) | 39°F(4°C) | 3.6 in(91 mm) | 70% | 3.9 |
| AprApril | 67°F(20°C) | 48°F(9°C) | 4.8 in(122 mm) | 62% | 4.8 |
| MayMayBest | 77°F(25°C) | 57°F(14°C) | 5.5 in(140 mm) | 67% | 5.2 |
| JunJune | 82°F(28°C) | 66°F(19°C) | 7.6 in(194 mm) | 73% | 4.7 |
| JulJuly | 88°F(31°C) | 75°F(24°C) | 8.9 in(225 mm) | 76% | 4.9 |
| AugAugust | 91°F(33°C) | 76°F(25°C) | 4.5 in(114 mm) | 71% | 5.2 |
| SepSeptember | 83°F(29°C) | 69°F(21°C) | 8.6 in(218 mm) | 72% | 4.1 |
| OctOctoberBest | 73°F(23°C) | 57°F(14°C) | 5.2 in(131 mm) | 70% | 3.4 |
| NovNovember | 63°F(17°C) | 46°F(8°C) | 2.4 in(62 mm) | 76% | 2.6 |
| DecDecember | 53°F(12°C) | 37°F(3°C) | 1.7 in(44 mm) | 69% | 2.1 |
1991–2020 averages. Sun is solar radiation in kWh/m² per day. Highlighted: the most comfortable months.
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