Onna Weather in January

January in Onna typically sees daytime highs of 20°C (68°F) and nighttime lows of 17°C (63°F). Rainfall is also possible this month, so it's worth packing an umbrella. It falls within the winter season.

Rainfall in Onna in January

Historically, the month has about 23 days of rain, averaging 113 mm (4.4 in) in total. This month brings frequent, heavy showers. Both the number of wet days and the rainfall totals are on the high side.

Temperature in Onna in January

Onna in January gets highs of 20°C (68°F) during the day and drops to 17°C (63°F) at night. The winter season is characteristic of January. Temperatures can feel cooler in the morning and evening, so layering is often the best approach. Nights cool down to 17°C (63°F), so a light jacket or extra layer is useful once the sun goes down. On the plus side, the cooler nights make for comfortable sleeping conditions. Typically, this month presents some of the milder temperatures of the year, yet it remains pleasantly warm.

Sunshine in Onna in January

The month is characterized by fewer sunny days, with roughly 94 hours hours of sunshine. Ideal for those who prefer a cooler, cloudier climate.

If you favor pleasant temperatures and minimal rainfall, January is one of the best months to visit Onna.

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 Onna's climate page.

Onna Temperature in January

Min Temperature 17°C (63°F)  

Max Temperature 20°C (68°F)  

Chance of Rain 76%  

Precipitation 113 mm (4.4 in)  

Rainy days 23 days  

Humidity 67% *  

Sunshine 94 hours *  

Percentage Sunshine *  

* Data from: Naha, Japan (36 KM, 22 Miles).

What to Wear in Onna in January

Pleasant temperatures in January mean you can pack light but flexibel pieces. Think cotton t-shirts, comfortable walking shorts, and one warmer layer for evenings. A light sweater or denim jacket works well. Prepare for significant rainfall with proper waterproof clothing and shoes. With limited sunshine expected, sunglasses aren't a priority for packing.

What To Do in Onna in January

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

Swimming

4/10

Cycling

9/10

Walking

9/10

Camping

6/10

Outdoor sports

9/10

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 Onna's climate page.

More climate data for Onna

Temperature Rainfall Sunshine Humidity

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