Okayama weather by month & the best time to visit
🇯🇵 Japan · city break · humid subtropical climate
The best time to visit Okayama is August — its sunniest month (Sunshine Score 68/100), with May and October close behind. Okayama averages about 1,914 hours of sunshine a year. Daytime highs around 30°C / 86°F and roughly 120 mm of rain in August.
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- Sun hours / year
- 1,914
- Sunniest month
- August
- Peak score
- 68/100
- Rain / year
- 1,487 mm
- Snow / year
- ≈43 cm
- Midday UV at peak
- 8 (very high)
- Population
- 866k
- Elevation
- 239 m
When is the best time to visit Okayama?
For sunshine, the best time to visit Okayama is August, then May and October. The dullest month is January (0/100, 86 mm of rain). The full month-by-month picture is in the table below.
How sunny is Okayama?
Okayama gets a moderate 1,914 hours of sunshine a year. 68 Sunshine Score points separate August (68) from January (0), so the month you pick matters. It ranks #12 of 79 destinations in Japan for annual sunshine, above the national median of 1,773 hours. The year's 1,487 mm of rain spreads fairly evenly across the months, with no pronounced dry season.
Sunshine Score by month
| Month | Score | Day high | Night low | Rain | UV |
|---|---|---|---|---|---|
| January | 0 | 5° / 41°F | -2° / 28°F | 86 mm | 2 |
| February | 0 | 7° / 45°F | -2° / 28°F | 81 mm | 3 |
| March | 18 | 11° / 52°F | 1° / 34°F | 103 mm | 4 |
| April | 53 | 17° / 63°F | 5° / 41°F | 105 mm | 5 |
| May | 67 | 23° / 73°F | 11° / 52°F | 122 mm | 6 |
| June | 62 | 26° / 79°F | 16° / 61°F | 172 mm | 6 |
| July | 62 | 29° / 84°F | 21° / 70°F | 212 mm | 7 |
| August | 68 | 30° / 86°F | 22° / 72°F | 120 mm | 8 |
| September | 62 | 26° / 79°F | 17° / 63°F | 179 mm | 6 |
| October | 67 | 20° / 68°F | 11° / 52°F | 122 mm | 5 |
| November | 37 | 14° / 57°F | 5° / 41°F | 83 mm | 3 |
| December | 0 | 8° / 46°F | 0° / 32°F | 102 mm | 2 |
See Okayama on the interactive sunshine globe →
Nearby places for sunshine
- Takamatsu Japan · 62 km · best in May · 1,982 h sun/yr
- Tottori Japan · 90 km · best in May · 1,544 h sun/yr
- Hiroshima Japan · 93 km · best in Oct · 1,773 h sun/yr
- Tokushima Japan · 98 km · best in Apr · 1,982 h sun/yr
- Yonago Japan · 99 km · best in May · 1,515 h sun/yr
- Izumo Japan · 114 km · best in May · 1,647 h sun/yr
Head-to-head
How Okayama compares month by month: Okayama vs Hiroshima · Okayama vs Tottori · Okayama vs Takamatsu · Okayama vs Izumo · all comparisons
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