Okushiri weather by month & the best time to visit
Japan · seaside town · humid subtropical climate
The best time to visit Okushiri is July — its sunniest month (Sunshine Score 64/100), with September and August close behind. Okushiri averages about 1,502 hours of sunshine a year. Daytime highs around 20°C / 68°F and roughly 124 mm of rain in July.
When is the best time to visit Okushiri?
For sunshine, the best time to visit Okushiri is July, then September and August. The dullest month is January (0/100, 103 mm of rain). The full month-by-month picture is in the table below.
How sunny is Okushiri?
Okushiri isn't a sunny place by world standards: about 1,502 hours of sunshine a year. 64 Sunshine Score points separate July (64) from January (0), so the month you pick matters. It ranks #72 of 79 destinations in Japan for annual sunshine, below the national median of 1,773 hours. The year's 1,261 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 | 0 | 2° / 36°F | -1° / 30°F | 103 mm | 1 | 10° / 50°F |
| February | 0 | 2° / 36°F | -1° / 30°F | 83 mm | 1 | 8° / 46°F |
| March | 0 | 4° / 39°F | 2° / 36°F | 70 mm | 2 | 7° / 45°F |
| April | 0 | 8° / 46°F | 6° / 43°F | 74 mm | 4 | 9° / 48°F |
| May | 24 | 12° / 54°F | 10° / 50°F | 86 mm | 5 | 12° / 54°F |
| June | 49 | 16° / 61°F | 15° / 59°F | 78 mm | 5 | 17° / 63°F |
| July | 64 | 20° / 68°F | 19° / 66°F | 124 mm | 6 | 21° / 70°F |
| August | 60 | 23° / 73°F | 22° / 72°F | 151 mm | 6 | 24° / 75°F |
| September | 63 | 21° / 70°F | 20° / 68°F | 131 mm | 5 | 23° / 73°F |
| October | 45 | 16° / 61°F | 14° / 57°F | 110 mm | 3 | 19° / 66°F |
| November | 11 | 10° / 50°F | 7° / 45°F | 126 mm | 1 | 14° / 57°F |
| December | 0 | 4° / 39°F | 1° / 34°F | 125 mm | 1 | 10° / 50°F |
Sea temperature in Okushiri by month
The sea off Okushiri is warmest in August at around 24°C / 75°F, and coolest in March at 7°C / 45°F. The water sits at a comfortable 21°C or warmer roughly 3 months a year. Month-by-month sea-surface temperatures are in the Sea column of the table above.
Nearest destinations
Okushiri: questions and answers
What kind of destination is Okushiri?
Okushiri is a seaside town in Japan with a humid subtropical climate — the sea reaches 24°C at its warmest and is swimmable (21°C+) about 3 months a year.
How many hours of sunshine does Okushiri get a year?
Okushiri gets about 1,502 hours of sunshine a year, at its best around July.
When is the best time to visit Okushiri?
The sunniest time to visit Okushiri is July, when the Sunshine Score peaks at 64/100 (with September and August close behind). Expect daytime highs around 20°C / 68°F.
What is the least sunny month in Okushiri?
January is the least sunny month in Okushiri, scoring 0/100 with about 103 mm of rain.
What is the sea temperature in Okushiri?
The sea in Okushiri ranges from about 7°C (March) to 24°C (August). Month-by-month sea temperatures are on this page.
How strong is the sun in Okushiri?
The typical midday UV index in Okushiri peaks around 6 (high) in July, easing to about 1 (low) in January. Month-by-month midday UV values are in the UV column of the table on this page.
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