Amagi weather by month & the best time to visit
Japan · beach resort · humid subtropical climate
The best time to visit Amagi is December — its sunniest month (Sunshine Score 72/100), with November and October close behind. Amagi averages about 1,811 hours of sunshine a year. Daytime highs around 20°C / 68°F and roughly 91 mm of rain in December.
When is the best time to visit Amagi?
For sunshine, the best time to visit Amagi is December, then November and October. The dullest month is January (61/100, 84 mm of rain). The full month-by-month picture is in the table below.
How sunny is Amagi?
Amagi gets a moderate 1,811 hours of sunshine a year. Conditions barely change through the year — only 11 Sunshine Score points separate December from January. It ranks #33 of 79 destinations in Japan for annual sunshine, above the national median of 1,773 hours. Rain has a clear season: the wettest stretch, around May, carries about 41% of the annual 1,964 mm.
Sunshine Score by month
| Month | Score | Day high | Night low | Rain | UV | Sea |
|---|---|---|---|---|---|---|
| January | 61 | 18° / 64°F | 16° / 61°F | 84 mm | 4 | 23° / 73°F |
| February | 62 | 18° / 64°F | 16° / 61°F | 79 mm | 5 | 21° / 70°F |
| March | 61 | 19° / 66°F | 17° / 63°F | 124 mm | 6 | 21° / 70°F |
| April | 62 | 21° / 70°F | 20° / 68°F | 174 mm | 7 | 23° / 73°F |
| May | 62 | 24° / 75°F | 22° / 72°F | 250 mm | 7 | 25° / 77°F |
| June | 62 | 26° / 79°F | 25° / 77°F | 381 mm | 8 | 26° / 79°F |
| July | 62 | 29° / 84°F | 28° / 82°F | 173 mm | 10 | 30° / 86°F |
| August | 62 | 29° / 84°F | 28° / 82°F | 177 mm | 10 | 31° / 88°F |
| September | 62 | 28° / 82°F | 27° / 81°F | 194 mm | 8 | 30° / 86°F |
| October | 64 | 26° / 79°F | 25° / 77°F | 139 mm | 7 | 29° / 84°F |
| November | 71 | 23° / 73°F | 22° / 72°F | 98 mm | 5 | 27° / 81°F |
| December | 72 | 20° / 68°F | 18° / 64°F | 91 mm | 3 | 24° / 75°F |
Sea temperature in Amagi by month
The sea off Amagi is warmest in August at around 31°C / 88°F, and coolest in February 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
Amagi: questions and answers
What kind of destination is Amagi?
Amagi 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 Amagi get a year?
Amagi gets about 1,811 hours of sunshine a year, at its best around December.
When is the best time to visit Amagi?
The sunniest time to visit Amagi is December, when the Sunshine Score peaks at 72/100 (with November and October close behind). Expect daytime highs around 20°C / 68°F.
What is the least sunny month in Amagi?
January is the least sunny month in Amagi, scoring 61/100 with about 84 mm of rain.
What is the sea temperature in Amagi?
The sea in Amagi ranges from about 21°C (February) to 31°C (August). Month-by-month sea temperatures are on this page.
How strong is the sun in Amagi?
The typical midday UV index in Amagi peaks around 10 (very high) in July, easing to about 3 (moderate) in December. Month-by-month midday UV values are in the UV column of the table on this page.
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