Koyasan Weather in January

January in Koyasan brings low temperatures, with highs of 8°C (46°F) and nights dropping to -1°C (30°F). Rainfall is on the higher side this month, averaging around 91 mm (3.6 in), so keep a rain jacket handy.

Rainfall in Koyasan in January

Records from the past 30 years suggest around 17 days of snow/rain, with 91 mm (3.6 in) average for the month. Expect a fairly normal spread of rainfall this month, with no particular pattern of very heavy or very persistent showers.

Temperature in Koyasan in January

Temperatures in Koyasan in January top out at 8°C (46°F) and drop to -1°C (30°F) overnight. The winter season is characteristic of January. Temperatures remain on the cold side all day. A proper warm jacket is worth having, not just for evenings. With lows of -1°C (30°F), nights are freezing. Packing a spare blanket is worth considering if you're staying somewhere that might not be fully heated. The coldest month of the year calls for plenty of warm layers. Be sure to pack your winter gear.

Sunshine in Koyasan in January

With about 137 hours of sunshine, the area enjoys a nice balance of sun and overcast, creating a pleasant environment.

January in Koyasan has its charm, but if you're looking for destinations with pleasant temperatures and sunny skies, our weather planner can help you explore other options in the world.

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• January
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For a detailed overview over the year and the best time to visit Japan, check out our Koyasan's climate page.

Koyasan Temperature in January

Min Temperature -1°C (30°F)  

Max Temperature 8°C (46°F)  

Chance of Rain 57%  

Precipitation 91 mm (3.6 in)  

Rainy days 17 days  

Humidity 63% *  

Sunshine 137 hours *  

Percentage Sunshine *  

* Data from: Wakayama, Japan (37 KM, 23 Miles).

What to Wear in Koyasan in January

Dress warmly and in layers for your trip to Koyasan in January. A good base layer system works wonders. Start with good thermal underwear, add something warm like a fleece sweater, then finish with a waterproof jacket on top. Expect heavy rainfall, so bring good rain protection and waterproof bags. It won't hurt to bring your sunglasses along, as you'll see some sunny periods.

What To Do in Koyasan in January

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

5/10

Cycling

4/10

Walking

4/10

Camping

1/10

Outdoor sports

4/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit Japan, check out our Koyasan's climate page.

More climate data for Koyasan

Temperature Rainfall Sunshine Humidity

See the full Koyasan climate overview or explore weather in Japan.