Osaka weather in December

December in Osaka is crisp and cool, with daytime temperatures averaging 11.4°C (52.5°F) and nights dropping to 3.5°C (38.3°F). You'll experience about 6 rainy days throughout the month with 56.4mm of precipitation, though sunshine is still plentiful at 7.7 hours daily. It's dry enough for sightseeing, but layers are essential to stay comfortable as temperatures can feel colder with wind and humidity.

This is the festive season in Osaka. Christmas decorations light up Dotonbori and shopping districts, while year-end illuminations create magical atmospheres across the city. Crowds are moderate compared to cherry blossom season—locals are busy with holiday preparations, making museums and temples less packed. The seasonal energy is warm despite the cold weather, with holiday markets and special events adding charm.

December 2026 is an excellent choice if you want to experience Osaka's winter character without extreme cold or heavy snow. Pack layers and a light rain jacket, and you'll enjoy comfortable exploration. Expect moderate accommodation prices before the peak New Year holiday rush, making this a sweet spot for budget-conscious travelers seeking authentic seasonal atmosphere.