Osaka weather by month & the best time to visit
🇯🇵 Japan · major coastal city · humid subtropical climate
The best time to visit Osaka is May — its sunniest month (Sunshine Score 64/100), with June and July close behind. Osaka averages about 1,831 hours of sunshine a year. Daytime highs around 22°C / 72°F and roughly 138 mm of rain in May.
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- Sun hours / year
- 1,831
- Sunniest month
- May
- Peak score
- 64/100
- Rain / year
- 1,526 mm
- Midday UV at peak
- 7 (high)
- Sea at warmest
- 29°C / 84°F
- Population
- 11.3M
- Elevation
- Sea level
When is the best time to visit Osaka?
For sunshine, the best time to visit Osaka is May, then June and July. The dullest month is January (7/100, 56 mm of rain). The full month-by-month picture is in the table below.
How sunny is Osaka?
Osaka gets a moderate 1,831 hours of sunshine a year. 57 Sunshine Score points separate May (64) from January (7), so the month you pick matters. It ranks #25 of 79 destinations in Japan for annual sunshine, above the national median of 1,773 hours. The year's 1,526 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 | Sea |
|---|---|---|---|---|---|---|
| January | 7 | 9° / 48°F | 5° / 41°F | 56 mm | 2 | 12° / 54°F |
| February | 13 | 10° / 50°F | 5° / 41°F | 71 mm | 3 | 10° / 50°F |
| March | 29 | 13° / 55°F | 7° / 45°F | 101 mm | 4 | 11° / 52°F |
| April | 57 | 18° / 64°F | 11° / 52°F | 112 mm | 5 | 15° / 59°F |
| May | 64 | 22° / 72°F | 15° / 59°F | 138 mm | 6 | 18° / 64°F |
| June | 62 | 25° / 77°F | 20° / 68°F | 191 mm | 6 | 22° / 72°F |
| July | 62 | 29° / 84°F | 24° / 75°F | 204 mm | 7 | 27° / 81°F |
| August | 62 | 30° / 86°F | 25° / 77°F | 148 mm | 7 | 29° / 84°F |
| September | 62 | 27° / 81°F | 22° / 72°F | 194 mm | 6 | 29° / 84°F |
| October | 62 | 22° / 72°F | 17° / 63°F | 159 mm | 4 | 25° / 77°F |
| November | 56 | 17° / 63°F | 12° / 54°F | 80 mm | 3 | 20° / 68°F |
| December | 25 | 12° / 54°F | 7° / 45°F | 72 mm | 2 | 15° / 59°F |
Sea temperature in Osaka by month
The sea off Osaka is warmest in August at around 29°C / 84°F, and coolest in February at 10°C / 50°F. The water sits at a comfortable 21°C or warmer roughly 5 months a year. Month-by-month sea-surface temperatures are in the Sea column of the table above.
See Osaka on the interactive sunshine globe →
Nearby places for sunshine
- Kobe Japan · 23 km · best in May · 1,831 h sun/yr
- Tokushima Japan · 67 km · best in Apr · 1,982 h sun/yr
- Takamatsu Japan · 115 km · best in May · 1,982 h sun/yr
- Okayama Japan · 132 km · best in Aug · 1,914 h sun/yr
- Nagoya Japan · 151 km · best in May · 1,906 h sun/yr
- Tottori Japan · 157 km · best in May · 1,544 h sun/yr
Nearest destinations
- Shirahama Japan · 86 km · 1,967 h sun/yr · best in Nov
- Toyooka Japan · 128 km · 1,544 h sun/yr · best in May
Head-to-head
How Osaka compares month by month: Osaka vs Nagoya · Osaka vs Kobe · Osaka vs Tokushima · Osaka vs Takamatsu · all comparisons
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