Monthly weather overview

Okinawa (Naha) monthly weather overview Japan · 오키나와

A quick, year-round overview of monthly and seasonal weather in Okinawa (Naha). Use this page to get a feel for which months and seasons match your travel style.

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Okinawa weather at a glance (Naha)

• Okinawa has a warm subtropical oceanic climate and feels like a “southern resort within Japan.”
• Even in winter, temperatures are similar to early spring in Seoul, and many days are fine with just a T-shirt and light outerwear.
• From June to October, typhoons and tropical showers are common, so checking sea and rain conditions is essential.
• For the best sea colors and skies, it’s helpful to distinguish between clearer seasons (roughly Apr-Jun, Oct-Nov) and peak typhoon season.
• Indoor and car AC is strong, so you usually need a thin extra layer even when it feels hot outside.

Jan · Feb

Winter that feels like early spring — “warm wind” is the key feature

Avg low 13-15°C / high 18-20°C · Rainy days: 10-12 per month / rainfall 110-130 mm

• On paper it looks warm, but wind and humidity can make it feel a touch cooler.
• The sea is a bit too chilly for leisurely swimming, but perfect for walks, drives, and cafés.
• A thin padded jacket or windbreaker is helpful, but a very heavy winter coat is usually unnecessary.

Suggested outfits

· Light padded jacket or windbreaker
· Long-sleeve T-shirts or thin knits
· Light sneakers

A note for travelers

There is decent demand for “quiet winter trips,” so flights and rental cars can still book up—check early.

Mar · Apr

Full spring — some days are warm enough for just short sleeves

Avg low 16-19°C / high 21-24°C · Rainy days: 9-11 per month / rainfall 110-130 mm

• On sunny days, it can feel hot enough that a T-shirt alone is comfortable.
• Even a little breeze can make beach walks feel refreshing.
• Sea water can still feel a bit cool for some swimmers, but it’s ideal for scenic drives and photos.

Suggested outfits

· T-shirt with light shirt or cardigan
· Light dresses or linen shirts
· Sandals or sneakers

A note for travelers

Spring in Okinawa is a “no extremes” golden time—easy to mix indoor and outdoor activities freely.

May · Jun

Rainy season overlaps with early summer — watch rain and humidity

Avg low 22-25°C / high 26-29°C · Rainy days: 12-15 per month / rainfall 200+ mm

• From mid- to late May, the rainy season starts and many days are cloudy or wet.
• Even without extreme heat, humidity makes it feel sticky and heavy.
• Short, intense showers that clear quickly—typical tropical squalls—are common.

Suggested outfits

· Breathable T-shirts or tank tops
· Light shorts or wide pants
· Sandals that can get wet

A note for travelers

If your trip is sea- and marine-activity-focused, make sure you understand cancellation policies and prepare café, museum, or shopping back-up plans.

Jul · Aug

Strong sun and typhoon season — the sea looks its best

Avg low 26-27°C / high 30-32°C · Rainy days: 10-13 per month / rainfall 150-200 mm (much more during typhoons)

• Sea colors are at their most vivid and intense at this time.
• UV levels are very high and typhoons or strong winds can disrupt plans.
• You can get exhausted quickly under the sun, so rest and shade are important.

Suggested outfits

· Very light T-shirts or tanks
· Swimsuits, rash guards, and beachwear
· Hat, sunglasses, sandals

A note for travelers

To avoid burnout, structure days around morning/evening sea time and midday rest at cafés or pools.

Sep · Oct

Between late summer and early autumn — best for both swimming and relaxing

Avg low 24-26°C / high 28-30°C · Rainy days: 10-12 per month / rainfall 150-200 mm

• September still feels quite summery, while October gradually becomes milder.
• Although typhoons can still occur, on the right days conditions are even more comfortable than peak summer.
• Sea temperatures are warm, making it ideal for snorkeling and diving.

Suggested outfits

· Short sleeves and tanks
· Beachwear and swimsuits
· Light shirts or dresses

A note for travelers

There is still some typhoon risk, but if you want full resort vibes without peak-summer crowds, early to mid-October is a great compromise.

Nov · Dec

Warm late autumn and early winter — quiet healing season

Avg low 19-21°C / high 23-25°C · Rainy days: 8-10 per month / rainfall 90-120 mm

• While mainland Japan is entering winter, Okinawa still feels like late autumn or very early winter.
• The sea can feel a bit cool for long swims, but it’s a wonderful time for walks, drives, cafés, and food-focused trips.
• Tourist numbers drop, making it ideal if you prefer calm and quiet.

Suggested outfits