Okinawa Weather in December

Season: Winter

Overview:
1. Okinawa’s weather in December is cool with relatively low rainfall, perfect for outdoor explorations.
2. There is a considerable temperature gap between day and night, so layering is essential.
3. It’s not suitable for underwater activities due to chilly water temperatures.
4. December is a slack travel season, providing a leisurely travel experience with lower costs.

Cool Temperatures

Influenced by the cold air, Okinawa in December experiences a drop in temperature. However, the climate is not cold but cool and pleasant overall, with the average temperature ranging from 16-21°C (61-70°F). If you want to spend a warm and quiet winter, Okinawa is a favorable choice.

During the daytime, the highest temperature reaches nearly 25 degrees Celsius (77 degrees Fahrenheit). However, after the sunset, things cool down: the daily lowest temperature hovers around 14°C (57°F). Besides, the perceived temperature tends to be even lower, because Okinawa is surrounded by the ocean and the strong wind blows.

Night View by Beach

Less Rainfall and Crisp Air

December in Okinawa receives the lowest rainfall of around 103 mm of rainfall on average. The rain is mostly brief showers, which won’t significantly affect your travel plan with rain gear in hand. Apart from that, there are almost no typhoons in Okinawa in December, so you’ll enjoy a stable climate and safe travel experience.

Okinawa enjoys crisp and fresh air in December, with the average humidity level of 65 %, which is suitable for outdoor activities, such as light hiking in Cape Zanpa.

Strong Wind

Near around late month, the cold air sweeps in, and the strong winds intensify. In coastal areas, the wind speed can reach 10 m/s, about Force 5 on average, so be sure to wear warm enough and windproof clothes.

Can You Swim in Okinawa in December?

As Okinawa’s climate turns gradually cool, the sea water temperature becomes chilly, averaging about 24°C (77°F). Therefore, you are not recommended to go swimming and go for underwater activities. But if you are a snorkeling lover, you can still explore underwater with a wetsuit. An extra bonus: the water visibility is particularly high, especially when it’s sunny.

Coral Reef

Sunshine Hours & Daytime Hours

Sunshine Hours: about 4 hours
Sunrise: 6:59-7:16
Sunset: 17:36-17:48
Daytime Hours: 10 hours 30 minutes - 10 hours 37 minutes

Okinawa in December experiences decreasing sunshine hours and daylight time, so you are advised to plan your trip wisely to make your day the best. Luckily, the ultraviolet rays are the weakest in the 12 months, with the maximum UV index about 5.

Lovely Coastal View

Is December a Good Time for Okinawa?

Overall, December is a nice month to visit Okinawa.

Okinawa has a less rainy and relatively cool climate, perfect for outdoor explorations. Cold water temperatures might discourage you from underwater activities, but the brilliant ocean view on sunny weather still deserves a visit. Besides, December is the low travel season, so you’ll find affordable hotels and less crowded attractions. You will not get bored even though you might have difficulties swimming in the sea: there are various activities, including watching whales, mangrove kayaking, and Christmas Light Display.

Mangrove Kayaking

Clothing Guidance

Upper Clothing: It’s usually enough to wear a shirt paired with a light jacket in the daytime. At night, it’s best to wear a thicker windproof jacket. If you encounter a cold and windy day, you’d better choose an overcoat or a 3-in-1 jacket to add warmth.

Bottom Clothing: Jeans are practical and suitable for your daily outing. Alternatively, a pair of windproof trousers is useful to block the possible chill.

Footwear: You are advised to pack comfortable sneakers.

Accessories:
Occasional rain makes an umbrella necessary.
Don’t forget to pack sunscreen even though the sunshine is not as intense as in summer.
As the weather might be cold by the end of December, remember to pack a scarf to stay warm.

Travel Recommendations and Advice

1. If you are sensitive to the cold air and prefer to stay indoors when the temperature drops in the late afternoon, it’s advisable to book a hotel equipped with natural spring water.
2. Although daylight time is relatively short, there are amazing evening activities. You can see the surprisingly magnificent starry skies, especially in the remote islands, where limited illumination allows for stunning stargazing. Besides, it’s also a good idea to participate in astronomy observation events held at Ishigaki Island.
3. From the second half of December, many shopping malls and hotels across the islands will be decorated with Christmas items, and you will appreciate the stunning light shows in the evening. The coming of Christmas Day also attracts numerous international visitors. Thus, be sure to book the hotel in advance to avoid missing out on your preferred accommodation.
4. There’s a chance to watch whales this month, especially by the end of December. You may experience a bumpy boat, strong winds, and cold temperatures, so wear thick clothes and pack motion sickness medication.
5. You are advised to visit coastal attractions in the afternoon, such as Blue Cave and Cape Manzo, because the sunlight turns gentler and you will appreciate a more significant view.
6. Mangrove kayaking is a popular all-age activity for those who are not into diving or snorkeling. It’s a great opportunity to observe the local natural environment. But you need to notice that its operating hours depend on the tide times. Therefore, don’t forget to check them in advance.

Overcast Day in Okinawa