Annual Temperature and Weather in Amami Oshima
Amami Oshima has a warm and humid subtropical climate. The average annual temperature is around 21–23°C (70–73°F), with high humidity all year round.
From May to October, the temperatures on Amami Oshima are just what you’d imagine for a tropical island. Especially from June to September, temperatures can rise as high as 35°C (95°F) on some days.August and September are also the months when typhoons can occur.
In October and November, there are still plenty of sunny days, and the temperatures are more comfortable than in summer. There are still many days perfect for swimming in the sea.
From December to February, the temperatures drop, and cloudy or rainy days become more frequent. February is the coldest month, with temperatures sometimes dropping to as low as 9°C (48°F). Winter in Amami Oshima is ideal for hiking.
In March and April, the temperatures rise, making it a pleasant time to visit, though the weather can be a bit unpredictable. Still, many sunny days are to be expected.
Clothes for Activity
March, April, and November
This is the most comfortable time of year to visit Amami Oshima, with pleasant temperatures throughout the day.
On sunny days, you can often get by with short sleeves, but early mornings and evenings can be a bit chilly.
It’s a good idea to bring a light hoodie or jacket just in case.
To adjust to the changing weather and temperatures, we recommend packing a mix of clothing—short-sleeved shirts and shorts, long-sleeved tops and pants, and a light jacket.
May to October
This is the hottest season of the year on Amami Oshima.
Short sleeves and shorts are comfortable during the day, but the island’s strong UV rays mean it’s highly recommended to wear rash guards, leggings, or other protective clothing.
This is especially important for water-based activities like kayaking in the mangroves or swimming in the sea, as exposed skin can get severely sunburned.
In early mornings and evenings during May or October, the temperature can drop slightly, so it’s a good idea to bring a light jacket just in case.
December to February
This is the coldest and windiest time of the year on Amami Oshima.
Layering is key to staying warm—long-sleeve shirts, hoodies, and a water-resistant outer layer work well together.
Since rain is also a possibility, having a waterproof jacket is especially helpful.
While it doesn’t get as cold as places where it snows, proper protection against the cold is still important to stay comfortable.
What to Bring for the Tour
- Sunscreen
- Sunglasses
- Cap or hat
- Sandals
- Towel
About Sunscreen:
Please check the ingredients in your sunscreen. Avoid using products that contain oxybenzone or octinoxate, as these chemicals are harmful to coral reefs.
The coral reefs around Amami Oshima are under threat, and we appreciate your cooperation in protecting the local environment.
Rental Items Available
At Link Adventures, the following items are available free of charge for our tour participants.
- Sandals
- Rubber boots
- Waterproof smartphone cases
- Raincoats
- Umbrellas
Dress Comfortably According to the Temperature
To enjoy your trip and tour comfortably, it’s important to choose the right clothing. Dressing appropriately for the day’s temperature and weather not only keeps you comfortable but also helps ensure your safety.
If you have any questions about Amami Oshima, feel free to contact us through the contact form.
