Amami weather by month & the best time to visit
Japan · beach resort · humid subtropical climate
The best time to visit Amami is December — its sunniest month (Sunshine Score 72/100), with November and February close behind. Amami averages about 1,650 hours of sunshine a year. Daytime highs around 20°C / 68°F and roughly 89 mm of rain in December.
When is the best time to visit Amami?
For sunshine, the best time to visit Amami is December, then November and February. The dullest month is January (61/100, 80 mm of rain). The full month-by-month picture is in the table below.
How sunny is Amami?
Amami isn't a sunny place by world standards: about 1,650 hours of sunshine a year. Conditions barely change through the year — only 11 Sunshine Score points separate December from January. It ranks #53 of 79 destinations in Japan for annual sunshine, below the national median of 1,773 hours. Rain has a clear season: the wettest stretch, around June, carries about 41% of the annual 1,891 mm.
Sunshine Score by month
| Month | Score | Day high | Night low | Rain | UV | Sea |
|---|---|---|---|---|---|---|
| January | 61 | 18° / 64°F | 16° / 61°F | 80 mm | 3 | 22° / 72°F |
| February | 62 | 18° / 64°F | 16° / 61°F | 78 mm | 4 | 22° / 72°F |
| March | 61 | 19° / 66°F | 17° / 63°F | 119 mm | 5 | 21° / 70°F |
| April | 61 | 21° / 70°F | 20° / 68°F | 164 mm | 6 | 23° / 73°F |
| May | 61 | 24° / 75°F | 22° / 72°F | 241 mm | 7 | 24° / 75°F |
| June | 61 | 26° / 79°F | 25° / 77°F | 364 mm | 8 | 26° / 79°F |
| July | 61 | 29° / 84°F | 28° / 82°F | 167 mm | 10 | 30° / 86°F |
| August | 61 | 29° / 84°F | 28° / 82°F | 169 mm | 10 | 31° / 88°F |
| September | 61 | 28° / 82°F | 27° / 81°F | 179 mm | 8 | 29° / 84°F |
| October | 62 | 26° / 79°F | 25° / 77°F | 142 mm | 6 | 28° / 82°F |
| November | 70 | 23° / 73°F | 22° / 72°F | 99 mm | 4 | 27° / 81°F |
| December | 72 | 20° / 68°F | 18° / 64°F | 89 mm | 3 | 24° / 75°F |
Sea temperature in Amami by month
The sea off Amami is warmest in August at around 31°C / 88°F, and coolest in March at 21°C / 70°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
How Amami compares month by month: Amami vs Naha · Amami vs Kagoshima · Amami vs Miyazaki · all comparisons
Amami: questions and answers
What kind of destination is Amami?
Amami is a beach resort in Japan with a humid subtropical climate — the sea reaches 31°C at its warmest and is swimmable (21°C+) year-round.
How many hours of sunshine does Amami get a year?
Amami gets about 1,650 hours of sunshine a year, at its best around December.
When is the best time to visit Amami?
The sunniest time to visit Amami is December, when the Sunshine Score peaks at 72/100 (with November and February close behind). Expect daytime highs around 20°C / 68°F.
What is the least sunny month in Amami?
January is the least sunny month in Amami, scoring 61/100 with about 80 mm of rain.
What is the sea temperature in Amami?
The sea in Amami ranges from about 21°C (March) to 31°C (August). Month-by-month sea temperatures are on this page.
How strong is the sun in Amami?
The typical midday UV index in Amami peaks around 10 (very high) in July, easing to about 3 (moderate) in January. Month-by-month midday UV values are in the UV column of the table on this page.
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