Okinawa Weather Guide

Onna & West Coast Resorts Weather & What to Wear

Onna, Cape Manzamo, Blue Cave, Chatan

A resort area on the main island's west coast, centered on Onna — known for Cape Manzamo and the Blue Cave — and stretching down to the American Village in Chatan. There's no weather station nearby, so temperatures shown are Naha's (actual temperatures are about the same as Naha or slightly lower).

January low
14.9℃
August high
31.8℃
Annual rain
2,161mm
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Forecast

Forecast: Today & the Next 7 Days

JMA forecast issued Oct 22, 11 AM

Every 3 Hours: Today & Tomorrow

  1. Today
    12 PM
    Rain
    26°
    ☂ 80%
    15–19m/s
  2. 3 PM
    Rain
    26°
    ☂ 80%
    15–19m/s
  3. 6 PM
    Rain
    27°
    ☂ 80%
    15–19m/s
  4. 9 PM
    Rain
    27°
    ☂ 80%
    15–19m/s
  5. Tomorrow
    12 AM
    Rain
    27°
    ☂ 50%
    15–19m/s
  6. 3 AM
    Rain
    27°
    ☂ 50%
    15–19m/s
  7. 6 AM
    Cloudy
    27°
    ☂ 50%
    15–19m/s
  8. 9 AM
    Rain
    28°
    ☂ 50%
    15–19m/s
  9. 12 PM
    Cloudy
    28°
    ☂ 50%
    15–19m/s
  10. 3 PM
    Rain
    29°
    ☂ 50%
    15–19m/s
  11. 6 PM
    Cloudy
    28°
    ☂ 40%
    15–19m/s
  12. 9 PM
    Cloudy
    28°
    ☂ 40%
    15–19m/s

Weather and wind are for the wider area; temperature is for the main forecast point. Chance of rain is for the 6-hour period.

  1. Today
    10/22(Thu)
    Rain
    27°/24°
    Observed: 24°
    ☂ 80%
  2. Tomorrow
    10/23(Fri)
    Cloudy, rain at times
    30°/26°
    ☂ 50%
  3.  
    10/24(Sat)
    Cloudy, brief rain
    31°/27°
    ☂ 60%
  4.  
    10/25(Sun)
    Cloudy
    31°/26°
    ☂ 40%
    Reliability B
  5.  
    10/26(Mon)
    Cloudy
    30°/26°
    ☂ 40%
    Reliability B
  6.  
    10/27(Tue)
    Cloudy
    29°/25°
    ☂ 40%
    Reliability B
  7.  
    10/28(Wed)
    Cloudy, sunny at times
    27°/23°
    ☂ 30%
    Reliability A
  • ☂ Chance of rain
  • From day 3, the weekly forecast covers a wider prefecture-level area.
  • Reliability of the weekly forecast (A: high, B: fairly high, C: fairly low)
  • "Observed" is the temperature measured so far today by JMA weather stations (AMeDAS), not a forecast.
  • Source: Japan Meteorological Agency (weather forecast)
Best Season

Best Time to Visit Onna & West Coast Resorts

For the beach

From late June, when the rainy season ends, to September is the best season for swimming and snorkeling. Blue Cave tours are popular too.

For comfortable weather

Spring and autumn aren't too hot — just right for relaxing at a resort or strolling along the shore.

Climate

Onna & West Coast Resorts Temperature Through the Year

Monthly high / low temperature (°C)

HighLow
101520253035JanFebMarAprMayJunJulAugSepOctNovDec31.9℃14.9℃Jan High 19.8℃ / Low 14.9℃Feb High 20.2℃ / Low 15.1℃Mar High 21.9℃ / Low 16.7℃Apr High 24.3℃ / Low 19.1℃May High 27.0℃ / Low 22.1℃Jun High 29.8℃ / Low 25.2℃Jul High 31.9℃ / Low 27.0℃Aug High 31.8℃ / Low 26.8℃Sep High 30.6℃ / Low 25.8℃Oct High 28.1℃ / Low 23.5℃Nov High 25.0℃ / Low 20.4℃Dec High 21.5℃ / Low 16.8℃
Month by Month

Month-by-Month Weather & What to Wear

MonthHighLowPrecip.What to wear
Jan19.8℃14.9℃101.6mmLong sleeves + jacketLong sleeves with a light jacket or hoodie
Feb20.2℃15.1℃114.5mmT-shirt + layerT-shirt, plus light long sleeves for mornings and evenings
Mar21.9℃16.7℃142.8mmT-shirt + layerT-shirt, plus light long sleeves for mornings and evenings
Apr24.3℃19.1℃161mmT-shirtT-shirt, with a light layer for evenings and air conditioning
May27.0℃22.1℃245.3mmT-shirtT-shirt, with a light layer for evenings and air conditioning
Jun29.8℃25.2℃284.4mmT-shirtT-shirt, with a light layer for evenings and air conditioning
Jul31.9℃27.0℃188.1mmT-shirtT-shirt, with a light layer for evenings and air conditioning
Aug31.8℃26.8℃240mmT-shirtT-shirt, with a light layer for evenings and air conditioning
Sep30.6℃25.8℃275.2mmT-shirtT-shirt, with a light layer for evenings and air conditioning
Oct28.1℃23.5℃179.2mmT-shirtT-shirt, with a light layer for evenings and air conditioning
Nov25.0℃20.4℃119.1mmT-shirtT-shirt, with a light layer for evenings and air conditioning
Dec21.5℃16.8℃110mmT-shirt + layerT-shirt, plus light long sleeves for mornings and evenings

Clothing tips are based on the normal high temperature. Bring a light layer for evenings and air-conditioned rooms.

Where to stay in Okinawa Main IslandNaha: Kokusai-dori Area・Omoromachi (Naha Shintoshin)・Shuri・Chatan & Mihama
Where to Stay · Agoda

Places to Stay near Onna & West Coast ResortsPR

Prices and availability are shown on Agoda.

Seasons

Onna & West Coast Resorts Through the Seasons

🌸

Spring

Mar–May

Beaches open for the season from late March to April. On sunny days you can go snorkeling too.

☀️

Summer

Jun–Aug

The resorts' busiest season. From July to September, there are days when you can't go in the sea because a typhoon is approaching.

🍁

Autumn

Sep–Nov

You can still enjoy the sea until October. The west coast is known for beautiful sunsets, and autumn brings especially lovely ones.

❄️

Winter

Dec–Feb

Northerly winds make the coast feel chilly, and the sea is too cold for swimming. Make use of resort pools, spas and indoor attractions.

Attractions

Attractions in Onna & West Coast Resorts

Zoo

Okinawa Zoo & Museum

Okinawa ・ Okinawa City

A facility in Okinawa City that combines a zoo with a hands-on museum. With the outdoor Animal Zone and the indoor Wonder Museum, it's fun rain or shine. Admission is free for ages 15 and under.

Botanical garden

Southeast Botanical Gardens

Okinawa ・ Okinawa City

An outdoor botanical garden in Okinawa City, officially named "Churayashi Park Okinawa Southeast Botanical Gardens." You can see about 1,300 species of tropical and subtropical plants, and an evening illumination is usually held from autumn through spring.

Airport Access

Getting to Onna & West Coast Resorts from the airport

Compare trains, buses and taxis from the airport by travel time and fare.

Travel Passes

Travel passes you can use in Onna & West Coast Resorts

🚄 JR

Japan Rail Pass

Nationwide ・ Three types: 7, 14 or 21 days. The period of use cannot be extended or changed

From ¥50,000

Plan Your Trip

Plan Your Onna & West Coast Resorts TripPR

Other Areas

Weather in Other Areas

Back to the Okinawa Weather Guide (all months & areas) →

Source: Japan Meteorological Agency (climate normals 1991-2020). Compiled by tripuuu.log. Temperature and precipitation figures are normals from the Naha station; actual weather varies from year to year.