Kumejima weather by month & the best time to visit

🇯🇵 Japan · beach resort · tropical monsoon climate

The best time to visit Kumejima is February — its sunniest month (Sunshine Score 79/100), with December and November close behind. Kumejima averages about 1,729 hours of sunshine a year. Daytime highs around 20°C / 68°F and roughly 52 mm of rain in February.

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Sun hours / year

1,729

Sunniest month

February

Peak score

79/100

Rain / year

1,616 mm

Midday UV at peak

11 (extreme)

Sea at warmest

31°C / 88°F

Population

7k

Elevation

6 m

When is the best time to visit Kumejima?

For sunshine, the best time to visit Kumejima is February, then December and November. The dullest month is May (61/100, 214 mm of rain). The full month-by-month picture is in the table below.

How sunny is Kumejima?

Kumejima isn't a sunny place by world standards: about 1,729 hours of sunshine a year. February (79/100) is noticeably better than May (61). It ranks #46 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 May, carries about 41% of the annual 1,616 mm.

Sunshine Score by month

Sea temperature in Kumejima by month

The sea off Kumejima is warmest in July at around 31°C / 88°F, and coolest in February 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.

See Kumejima on the interactive sunshine globe →

Nearby places for sunshine

• Naha Japan · 94 km · best in Feb · 1,823 h sun/yr
• Miyakojima Japan · 226 km · best in Feb · 2,008 h sun/yr
• Miyakojima Japan · 232 km · best in Feb · 2,008 h sun/yr
• Ishigaki Japan · 331 km · best in Feb · 1,858 h sun/yr
• Amami Japan · 375 km · best in Dec · 1,650 h sun/yr
• Taoyuan Taiwan · 567 km · best in Dec · 1,334 h sun/yr

Nearest destinations

• Aguni Japan · 58 km · 1,823 h sun/yr · best in Feb
• Yoron Japan · 184 km · 1,809 h sun/yr · best in Dec
• Wadomari Japan · 230 km · 1,810 h sun/yr · best in Dec