Okinawa

Here's the thing about Okinawa that nobody mentions until they arrive: it rains. A lot. We're talking 2,055 mm annually — nearly double what falls on Tokyo — and if you time it wrong, you'll spend half your trip waiting out downpours. The real story isn't "when is it sunny" but "when is it *bearably* wet and warm." October through April is your window. Highs hover around 20–24°C (68–75°F) during winter, climbing to 27–28°C (81–82°F) by spring, and the rain becomes genuinely intermittent rather than a daily certainty. These months matter because Okinawa's subtropical character — the reason you came — actually reveals itself when you're not ducking into convenience stores every 40 minutes.

Each month in this sweet spot has its own personality. October and November feel like the Goldilocks zone: water's still warm enough for swimming (around 25°C / 77°F), crowds thin after summer, and the light has that golden-hour quality all day. December through February gets properly cool — jacket weather in the mornings — but you'll have stretches of brilliant blue skies and that rare, crisp air. March and April bring wildflower season and cherry blossoms lingering in the north; prices creep up, but you're still ahead of the May chaos. Sunshine averages 8.7 hours daily year-round, but winter months feel brighter because the humidity finally drops below "walking through soup" levels.

Now, the months to dodge: May and June are typhoon season's opening act — not every day, but unpredictable enough that outdoor plans crumble. August is simply brutal: highs regularly hit 32–33°C (90–91°F) with crushing humidity, and locals themselves escape to the mountains. You'll find cheaper flights and hotel rates, sure, but you'll spend them sweating in air-conditioned rooms. June also sees school holidays kicking in, so beaches and attractions get mobbed by domestic tourists facing the same weather gamble you are.

Okinawa's climate is warming like most subtropical regions — 2026 will likely track slightly hotter and wetter than the 30-year average, so those October–April months become even more precious. If you're flexible, lean earlier rather than later in that window. Late October and early November still have that residual summer warmth without the sweat, and you'll beat the winter price surge that hits December.