Okinawa Weather in August

Season: Summer

Overview:
1. Okinawa weather is quite hot, but sea breeze makes it more comfortable than expected.
2. August is the typhoon season in Okinawa, so remember to check the forecast frequently and adjust your trip accordingly.
3. August is the peak travel season in Okinawa, resulting in higher costs and more tourists.

Hot Climate in August

August marks the peak of summer in Okinawa, with average temperatures ranging between 27-32°C (81-90°F). On sunny days, daytime highs often exceed 30 degrees Celsius (86 degrees Fahrenheit) and can climb up to 34 degrees Celsius (93 degrees Fahrenheit). Unlike mainland Japan, however, Okinawa’s summer heat feels less extreme thanks to the constant sea breeze, which prevents hot air from building up. This means visitors can still enjoy a relatively cool time in the shaded areas or by going swimming in the sea.

On rainy days, temperatures cool slightly, usually hovering between 25-28°C (77-82°F), often accompanied by strong winds.

Clear Sea Water

Rainfall and Typhoons

Okinawa receives plenty of rainfall in August, with average precipitation of 240 mm over 12 rainy days. The rainfall mainly has two forms:

Subtropical showers: These are short, intense downpours, typical in the subtropical region like Okinawa. They usually pass quickly, so they won’t significantly disrupt your trip. In general, an umbrella or a temporary shelter is enough to help you against them.

Rains caused by typhoons: August is the peak month of typhoon season in Okinawa. During this period, typhoons occur most frequently and are more likely to make landfall. They tend to bring torrential rain, high waves and powerful winds, which can possibly lead to flight cancellations, ferry suspensions, and even power outages.

For safety and comfort, always monitor typhoon forecasts closely. If possible, avoid visiting Okinawa when it is forecast to be hit by typhoons. Even though there are no typhoons according to the weather forecast, you are recommended to book hotels that provide indoor leisure options, so you can still enjoy yourself on possible stormy days.

Nice Hotel Resort

Humidity

Okinawa experiences a quite humid climate in August, with the average humidity level of 78 %. If you plan a whole day of outdoor exploration, make sure to take a regular break and stay hydrated to avoid feeling stuffy.

Sea Water Temperature

Enjoy one of the best times for water activities! With the average water temperatures of around 29°C (84°F), you will have totally cozy moments in the water. However, it’s advisable to choose beaches with a protective net, as you might get stung by jellyfish or other toxic marine animals.

Beach with Safe Net

Sunshine Hours & Daytime Hours

Sunshine Hours: about 7 hours
Sunrise: 5:54-6:08
Sunset: 18:50-19:16
Daytime Hours: 12 hours 41 minutes - 13 hours 21 minutes

Okinawa experiences considerably long sunlight hours, and a quite high UV index: 11. Therefore, long exposure under the strong sun can easily lead to heatstroke or sunburn, making proper sun-protective precautions essential.

Though the daylight hours decrease to about 13 hours, they are usually enough for your daily tour in Okinawa. The sunset time is a bit late, so it’s best to plan your trip wisely if you want to catch a stunning sunset show.

Stunning Sunset View

Is Okinawa Good to Visit in August?

August in Okinawa comes with both strong advantages and clear drawbacks. If you can accept those downsides, this month can also bring unforgettable experiences.

Cons:
1. Typhoon Season: August is the peak month for typhoons, which may influence your travel a lot and even leave you stuck indoors for days.
2. Crowded & Costly: Mid-August coincides with Obon Festival, one of Japan’s three major holidays, when domestic travel surges. Plus, August is also the summer vacation in most Northern Hemisphere countries, so there will be numerous international tourists. Therefore, you’ll find packed attractions, high flight demand, and soaring hotel prices.

Pros:
1. With the highest sea temperatures of the year, August is ideal for swimming, snorkeling, diving and other water activities.
2. August hosts the famous traditional Eisa performance shows across all Okinawa islands, and various cultural events, where visitors can experience Okinawa’s unique summer celebration atmosphere.

Things You Might Need to Prepare

Upper Clothing: A T-shirt in breathable fabrics is a practical choice during your daily visit. You also need to pack a light sun-protective jacket to protect your skin from intense sunshine.

Bottom Clothing: You are advised to wear shorts or skirts to spend the hot summer days. A long dress is also a good choice for girls, especially when visiting the seaside.

Shoes: It’s best to wear sandals or flip-flops if you plan to have a beach holiday. Comfortable sneakers are more suitable for sightseeing that requires lots of walking.

Accessories:
1. It’s essential to pack sunscreen, a sun hat and sunglasses to resist strong UV rays.
2. Relatively high rainfall makes rain gear necessary.
3. Hot climate of Okinawa leads to the prevalence of mosquitoes, so don’t forget to pack insect repellent.

Travel Highlights

1. All-Okinawa Eisa Festival

Spectacular Firework View

Held in Koza Sports Park, Okinawa City, this three-day event attracts countless visitors. The largest traditional drum dance festival brings powerful performances that showcase the spirit of Ryukyu culture. Apart from dance performances, you’ll also find the Orion Beer Festival, where you can sip freshly brewed Orion beer while enjoying live music and stage performances.

2. Ogimi Village Summer Festival

It is a two-day summer celebration held at the Kumejima Town Astronomical Observatory Park, featuring live music and local food stalls. The festival reaches its climax with a spectacular fireworks display of 1,700 bursts over Shioya Fishing Port, providing an exciting summer vibe.

Travel Tips:

1. Try to arrive early to secure a good spot for watching performances or the fireworks display.
2. It’s always a good idea to book your hotel early, especially during the festival period.