Chase the autumn leaves in Japan
Japan is one of these cases which turns into a gold, yellow and orange fairy tale starting from September. And we can honestly say: We cannot imagine a more beautiful season to visit Japan.
Iriomote Weather in December
During December, Iriomote experiences high daytime temperatures of 24°C (75°F) and cooler nights around 20°C (68°F). Expect quite a bit of rainfall. Around 162 mm (6.4 in) is typical.
Rainfall in Iriomote in December
Expect around 22 days of rain based on historical data, with 162 mm (6.4 in) average. This month brings frequent, heavy showers. Both the number of wet days and the rainfall totals are on the high side.
Temperature in Iriomote in December
In December, expect high temperatures in Iriomote, with highs of 24°C (75°F) and lows of 20°C (68°F) at night. Overall, the month follows a fairly predictable daily temperature pattern. Nights are mild at around 20°C (68°F), which is comfortable for most people.
Sunshine in Iriomote in December
With limited sunshine this month, there are about 70 hours of sun. It's ideal for those who prefer a cooler, cloudier climate.If your ideal day consists of dry skies and pleasant temperatures, January, February, March, April, May, June, October, November and December typically offer the best circumstances for Iriomote.
Iriomote Temperature in December
Min Temperature
20°C (68°F)
Max Temperature
24°C (75°F)
Chance of Rain
75%
Precipitation
162 mm (6.4 in)
Rainy days
22 days
Humidity
75%
Sunshine
70 hours
Percentage Sunshine
Iriomote Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Iriomote - and find the best time to visit.
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Iriomote typically stay consistent throughout December, with daily highs averaging around 24°C (75°F). Nights are pleasant, with lows typically ranging from 17°C (63°F) to 19°C (66°F).
Average temperatures in December
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in December
Historical weather records for Iriomote in December
Browse day-by-day weather records for Iriomote spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Iriomote historical weather extremes in December
Our historical data for Iriomote spans 1976 to 2025, revealing these weather extremes.
- The hottest December day on record in Iriomote reached 28°C (82°F) (December 22, 1984).
- On December 22, 2005, Iriomote saw its coldest December day with temperatures maxing out at 13°C (55°F).
- Iriomote registered its coldest December night on December 30, 1980, with temperatures dropping to 9°C (48°F).
Best Places in Japan in December
Find out more about the weather in Japan and which places have the best travel conditions in this month. See all of Japan in December →
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).
What to Wear in Iriomote in December
Comfortable temperatures call for an easy wardrobe in December. Pack summer basics like t-shirts and shorts, but include a light jacket for cooler moments. A pair of comfortable walking shoes is essential. It's going to pour! Pack a good poncho and prepare for very wet conditions. Sunglasses aren't essential this month, though you might want them for the occasional bright moment.
What To Do in Iriomote in December
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Swimming4/10 -
Camping6/10
Iriomote 3-Day Forecast
More climate data for Iriomote
Temperature Rainfall Sunshine Humidity
See the full Iriomote climate overview or explore weather in Japan.
Popular in December
Where to go in December - average daytime high across popular destinations.
Naha
22°C (72°F) Tokyo
13°C (55°F) Osaka13°C (55°F) Hakone
12°C (54°F) Kyoto11°C (52°F) Hakuba
3°C (37°F) Sapporo2°C (36°F) Niseko
1°C (34°F) Bucket list
Need travel inspiration? Check out our bucket list articles and be inspired.
Chase the autumn leaves in Japan
Walk the 88 temple circuit
We recommend walking the 88 temple circuit from April til October. Although June, July and August can be a bit wet, hot and humid.
The famous bamboo forests of Arashiyama
The famous bamboo forests of Arashiyama lie just outside the city center of Kyoto and is unique in the world. If you look at photos of this bamboo forest, it looks like you have landed in a fairy-tale world.
10 reasons why you should visit Japan in winter
Here are 10 reasons why you should plan a winter trip to Japan. During this period, popular sights are less busy and prices for flights and hotels much cheaper.