Naha weather by month & the best time to visit
Japan · coastal city break · tropical monsoon climate
The best time to visit Naha is February — its sunniest month (Sunshine Score 80/100), with January and December close behind. Naha averages about 1,823 hours of sunshine a year. Daytime highs around 20°C / 68°F and roughly 50 mm of rain in February.
When is the best time to visit Naha?
For sunshine, the best time to visit Naha is February, then January and December. The dullest month is May (62/100, 209 mm of rain). The full month-by-month picture is in the table below.
How sunny is Naha?
Naha gets a moderate 1,823 hours of sunshine a year. February (80/100) is noticeably better than May (62). It ranks #31 of 79 destinations in Japan for annual sunshine, above the national median of 1,773 hours. The year's 1,580 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 | 78 | 20° / 68°F | 18° / 64°F | 61 mm | 4 | 23° / 73°F |
| February | 80 | 20° / 68°F | 18° / 64°F | 50 mm | 5 | 22° / 72°F |
| March | 74 | 21° / 70°F | 19° / 66°F | 81 mm | 6 | 22° / 72°F |
| April | 66 | 23° / 73°F | 21° / 70°F | 124 mm | 7 | 24° / 75°F |
| May | 62 | 25° / 77°F | 24° / 75°F | 209 mm | 8 | 25° / 77°F |
| June | 62 | 27° / 81°F | 27° / 81°F | 293 mm | 9 | 26° / 79°F |
| July | 66 | 29° / 84°F | 28° / 82°F | 125 mm | 10 | 30° / 86°F |
| August | 62 | 30° / 86°F | 29° / 84°F | 175 mm | 10 | 31° / 88°F |
| September | 62 | 29° / 84°F | 28° / 82°F | 186 mm | 9 | 30° / 86°F |
| October | 66 | 27° / 81°F | 26° / 79°F | 126 mm | 7 | 29° / 84°F |
| November | 74 | 24° / 75°F | 23° / 73°F | 83 mm | 5 | 27° / 81°F |
| December | 77 | 22° / 72°F | 20° / 68°F | 67 mm | 4 | 24° / 75°F |
Sea temperature in Naha by month
The sea off Naha is warmest in August at around 31°C / 88°F, and coolest in February at 22°C / 72°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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Naha: questions and answers
What kind of destination is Naha?
Naha is a coastal city break in Japan with a tropical monsoon climate — the sea reaches 31°C at its warmest and is swimmable (21°C+) year-round.
How many hours of sunshine does Naha get a year?
Naha gets about 1,823 hours of sunshine a year, at its best around February.
When is the best time to visit Naha?
The sunniest time to visit Naha is February, when the Sunshine Score peaks at 80/100 (with January and December close behind). Expect daytime highs around 20°C / 68°F.
What is the least sunny month in Naha?
May is the least sunny month in Naha, scoring 62/100 with about 209 mm of rain.
What is the sea temperature in Naha?
The sea in Naha ranges from about 22°C (February) to 31°C (August). Month-by-month sea temperatures are on this page.
How strong is the sun in Naha?
The typical midday UV index in Naha peaks around 10 (very high) 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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