Ishigaki weather by month & the best time to visit
Japan · beach resort · tropical rainforest climate
The best time to visit Ishigaki is February — its sunniest month (Sunshine Score 77/100), with January and March close behind. Ishigaki averages about 1,858 hours of sunshine a year. Daytime highs around 21°C / 70°F and roughly 69 mm of rain in February.
When is the best time to visit Ishigaki?
For sunshine, the best time to visit Ishigaki is February, then January and March. The dullest month is May (62/100, 161 mm of rain). The full month-by-month picture is in the table below.
How sunny is Ishigaki?
Ishigaki gets a moderate 1,858 hours of sunshine a year. Conditions barely change through the year — only 15 Sunshine Score points separate February from May. It ranks #20 of 79 destinations in Japan for annual sunshine, above the national median of 1,773 hours. The year's 1,491 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 | 76 | 21° / 70°F | 19° / 66°F | 73 mm | 4 | 24° / 75°F |
| February | 77 | 21° / 70°F | 19° / 66°F | 69 mm | 6 | 24° / 75°F |
| March | 75 | 22° / 72°F | 20° / 68°F | 80 mm | 6 | 23° / 73°F |
| April | 70 | 24° / 75°F | 22° / 72°F | 106 mm | 7 | 26° / 79°F |
| May | 62 | 26° / 79°F | 25° / 77°F | 161 mm | 8 | 28° / 82°F |
| June | 62 | 28° / 82°F | 27° / 81°F | 182 mm | 10 | 29° / 84°F |
| July | 67 | 29° / 84°F | 29° / 84°F | 120 mm | 11 | 31° / 88°F |
| August | 62 | 29° / 84°F | 28° / 82°F | 199 mm | 10 | 31° / 88°F |
| September | 62 | 28° / 82°F | 28° / 82°F | 195 mm | 9 | 30° / 86°F |
| October | 67 | 27° / 81°F | 26° / 79°F | 125 mm | 7 | 29° / 84°F |
| November | 71 | 25° / 77°F | 24° / 75°F | 99 mm | 5 | 27° / 81°F |
| December | 74 | 22° / 72°F | 21° / 70°F | 82 mm | 4 | 25° / 77°F |
Sea temperature in Ishigaki by month
The sea off Ishigaki is warmest in July at around 31°C / 88°F, and coolest in March at 23°C / 73°F. The water sits at a comfortable 21°C or warmer roughly all year round. Month-by-month sea-surface temperatures are in the Sea column of the table above.
Nearest destinations
Head-to-head
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Ishigaki: questions and answers
What kind of destination is Ishigaki?
Ishigaki is a beach resort in Japan with a tropical rainforest climate — the sea reaches 31°C at its warmest and is swimmable (21°C+) year-round.
How many hours of sunshine does Ishigaki get a year?
Ishigaki gets about 1,858 hours of sunshine a year, at its best around February.
When is the best time to visit Ishigaki?
The sunniest time to visit Ishigaki is February, when the Sunshine Score peaks at 77/100 (with January and March close behind). Expect daytime highs around 21°C / 70°F.
What is the least sunny month in Ishigaki?
May is the least sunny month in Ishigaki, scoring 62/100 with about 161 mm of rain.
What is the sea temperature in Ishigaki?
The sea in Ishigaki ranges from about 23°C (March) to 31°C (July). Month-by-month sea temperatures are on this page.
How strong is the sun in Ishigaki?
The typical midday UV index in Ishigaki peaks around 11 (extreme) in July, easing to about 4 (moderate) in January. Month-by-month midday UV values are in the UV column of the table on this page.
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