Iriomote Island Weather in January

Average temperatures, rainfall, sunshine and the best places to visit in Iriomote Island, Japan in January.

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Iriomote Taketomi

Planning a journey to Iriomote Island, Japan this January and curious over the weather conditions to await? Your essential details are found on this page, answering your query:

What to Expect in Iriomote Island in January

Iriomote Island, Japan is a region in Japan. January in Iriomote Island generally has warm temperatures, with heavy precipitation.

Temperatures

You can expect warm maximum daytime temperatures of around 22°C (72°F) and nighttime temperatures around 19°C (66°F) in Iriomote. In general, this month stands out as the coldest period throughout the year. However, even though January is the coolest month, you can still find places in Iriomote Island, Japan with moderate temperatures, ensuring a pleasant experience throughout the year.

To explore the conditions in Iriomote Island, Japan in more detail, check the map below.

Precipitation

January is a very rainy month with an average rainfall of around 167 mm (6.6 in) in Iriomote.

Average sunshine

Sunshine is more limited in many areas during this month. Iriomote receives about 73 hours of sunlight. For sunnier weather, check our weather planner to find destinations with better conditions.

Explore Iriomote Island by month

Pick a month to see the average temperature, rainfall and sunshine in Iriomote Island - and find the best time to visit. (based on Iriomote)

January22°C (72°F) February22°C (72°F) March24°C (75°F) April25°C (77°F) May28°C (82°F) June29°C (84°F) This monthJuly30°C (86°F) August30°C (86°F) September29°C (84°F) October28°C (82°F) November26°C (79°F) December24°C (75°F)
Best Time to Visit Iriomote Island →

Best Places to Visit in Iriomote Island in January

Click on a destination dot for more details. Toggle the map to compare temperatures or precipitation across Iriomote Island.

Conditions Temperatures Precipitation
perfect weather
pleasant
tolerable
unpleasant
poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).

Popular Destinations in Iriomote Island

What is the weather like in January for some of the most popular destinations in Iriomote Island, Japan?

Temperature range in Iriomote Island (January)

Precipitation variation in Iriomote Island (January)

Iriomote

In January Iriomote generally has high temperatures with maximum daytime temperatures around 22°C (72°F), minimum nighttime temperatures around 19°C (66°F) and heavy monthly rainfall. So on average the conditions are very good that month.

« December
January
February »
December
January
February
Max temperature
24°C (75°F)
22°C (72°F)
22°C (72°F)
Min temperature
20°C (68°F)
19°C (66°F)
19°C (66°F)
Monthly sun hours
70 hours
73 hours
84 hours
Monthly rainfall
162 mm (6.4 in)
167 mm (6.6 in)
136 mm (5.4 in)
Monthly rainy days
22 days
23 days
21 days
Weather conditions
very good
very good
very good
Climate in Iriomote →

Taketomi

In January Taketomi generally has high temperatures with maximum daytime temperatures around 22°C (72°F), minimum nighttime temperatures around 19°C (66°F) and heavy monthly rainfall. So on average the conditions are very good that month.

« December
January
February »
December
January
February
Max temperature
24°C (75°F)
22°C (72°F)
22°C (72°F)
Min temperature
20°C (68°F)
19°C (66°F)
19°C (66°F)
Monthly sun hours
70 hours
73 hours
84 hours
Monthly rainfall
162 mm (6.4 in)
168 mm (6.6 in)
137 mm (5.4 in)
Monthly rainy days
22 days
23 days
21 days
Weather conditions
very good
very good
very good
Climate in Taketomi →

Is your destination not in the list? Have a look at all destinations in Iriomote Island, in Japan.

In our records: Japan January extremes

Notable January records observed across cities in Japan in our climate database (1976 – 2026). Historic readings can vary in quality, so treat these as illustrative.

  • In our records, the coldest January daytime high in Japan was -15°C (5°F) in Mount Fuji on January 18, 2004.

Popular cities in January

Day & night temperatures, rainfall and average weather in Iriomote Island in January.

City Weather Day temp Night temp Rainfall
Iriomote 22°C (72°F) 19°C (66°F) 167 mm (6.6 in)
Taketomi 22°C (72°F) 19°C (66°F) 168 mm (6.6 in)

Iriomote Island weather in January: frequently asked questions

What is the weather like in Iriomote Island, Japan in January?

January in Iriomote Island, Japan brings very good weather. In Iriomote, daytime temperatures are typically around 22°C (72°F) and nighttime lows hover near 19°C (66°F).

What is the average temperature in Iriomote Island, Japan in January?

Daytime temperatures in Iriomote peak at roughly 22°C (72°F) in January, dropping to about 19°C (66°F) overnight.

Does Iriomote Island, Japan get a lot of rain in January?

Rainfall in Iriomote Island, Japan peaks during January. Iriomote averages roughly 167 mm (6.6 in), so frequent and sometimes heavy showers are the norm.

Is January a Good Time to Visit Iriomote Island, Japan?

We consider January to be one of the best times to travel to Iriomote Island, Japan. Typically, the climate in Iriomote is very good. It's worth noting that weather conditions might differ depending on the location you visit.

Generally speaking, January, February, March, April, May, June, October, November and December provide very good weather in Iriomote. The weather in August, on the other hand, tends to be less favorable.

Interested in more climate information?

We have much more information about the climate in Iriomote Island.

Weather and climate has detailed information for every country in the world. Are you going to Japan? Get detailed historical weather averages for many cities in Japan.

Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal travel conditions. Find out where to go with our weather planner.

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