Kosai
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Kosai Weather in December

Kosai in December sees moderate temperatures, with highs around 14°C (57°F) and overnight lows of 5°C (41°F). It's the driest month of the year, with very little rainfall to worry about.

Rainfall in Kosai in December

This is the driest month of the year, though the temperatures are on the cooler side. Records from the past 30 years suggest around 10 days of rain, with 71 mm (2.8 in) average for the month. The rain this month tends to fall in heavier spells rather than light drizzle. When it rains, showers can be significant.

Temperature in Kosai in December

In December, expect moderate temperatures in Kosai, with highs of 14°C (57°F) and lows of 5°C (41°F) at night. Winter occurs in December. Even when the weather is stable, mornings and evenings can still feel distinctly cool. Nights fall to 5°C (41°F), which is cold enough to feel it indoors too. A good thick duvet makes all the difference for a comfortable night's sleep.

Sunshine in Kosai in December

Expect a lot of sunshine this month, with about 203 hours of sun. These sunny conditions help offset the cool temperatures, making it a pleasant month to explore outdoors.

Our weather planner can help you find worldwide destinations with pleasant weather during this period. April and May typically offer the best weather for Kosai.

Kosai Temperature in December

Min Temperature
5°C (41°F)
Max Temperature
14°C (57°F)
Chance of Rain
33%
Precipitation
71 mm (2.8 in)
Rainy days
10 days
Humidity
62% *
Sunshine
203 hours *
Percentage Sunshine
*
* Data from: Hamamatsu, Japan (18 KM, 11 Miles).

Kosai Weather by Month

Pick a month to see the average temperature, rainfall and sunshine in Kosai - and find the best time to visit.

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 Kosai in December

Pack for changing conditions in Kosai in December. Bring a mix of short and long sleeves, a warm layer like a hoodie or light jacket, and comfortable pants. The key is being able to add or remove layers as the days goes by. Rain gear is recommended, you can expect wet weather on multiple days. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.

What To Do in Kosai in December

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

  • Swimming
    4/10
  • Cycling
    6/10
  • Walking
    6/10
  • Camping
    4/10
  • Outdoor sports
    9/10

Kosai 3-Day Forecast

More climate data for Kosai

Popular in December

Where to go in December - average daytime high across popular destinations.

Bucket list

Need travel inspiration? Check out our bucket list articles and be inspired.