Osaka Weather in December
Japan · Humid Subtropical climate · Data averaged from 2020-01-01 to 2024-12-31 (5 years)
December in Osaka sees average temperatures ranging from a low of 3.1°C (37.6°F) to a high of 11.5°C (52.7°F), with a mean of 7.1°C (44.8°F). Compared to the annual average of 16.5°C (61.7°F), this month is 9.4°C cooler than the yearly norm. Precipitation averages 38.7mm, making it approximately 114.0mm drier than the monthly average of 153.0mm. This is the driest month of the year, with just 38.7mm of precipitation. The city receives an average of 8.2 hours of sunshine per day during December, with relative humidity averaging 72.5%. Wind speeds reach an average maximum of 20.9 km/h. Snowfall averages 0.3cm during December, which can affect travel plans and outdoor activities. For travelers, this month offers a temperature experience in Osaka, with drier-than-average conditions compared to the rest of the year.
Osaka's climate is similar to Tokyo but with a more pronounced urban heat effect. I visited during the humid summer and found the city's famous street food culture actually thrives in the heat — the covered arcades of Dotonbori provide perfect shelter from the sun. The data shows Osaka gets slightly warmer than Tokyo in summer, making air conditioning essential. Spring and autumn are the ideal windows for exploring the city's many temples and castles.
December vs Adjacent Months
| Metric | November | December | January |
|---|---|---|---|
| Mean Temp | 13.1°C (55.6°F) | 7.1°C (44.8°F) | 5.2°C (41.4°F) |
| Rainfall | 97.8mm | 38.7mm | 52.5mm |
| Sunshine | 8.0 hrs | 8.2 hrs | 7.4 hrs |
| Humidity | 76.1% | 72.5% | 74.1% |
| Wind | 18.9 km/h | 20.9 km/h | 22.9 km/h |
| Rainy Days | 10.2 | 7.8 | 12.0 |
| Snowfall | 0.0 cm | 0.3 cm | 0.5 cm |
Seasonal Context
December falls in Winter in the Northern Hemisphere. Winter is the coolest season with the shortest daylight hours. For travelers visiting Osaka in December, the data indicates mixed conditions based on the combination of temperature, precipitation, and daylight hours.
Frequently Asked Questions
What is the average temperature in Osaka in December?
The average temperature in Osaka during December ranges from 3.1°C (37.6°F) to 11.5°C (52.7°F), with a mean of 7.1°C (44.8°F).
How much does it rain in Osaka in December?
Osaka receives an average of 38.7mm of precipitation in December, spread across approximately 7.8 rainy days. This is the driest month of the year.
What should I pack for Osaka in December?
Based on December weather data, pack warm layers, a medium jacket, and waterproof outerwear.
Is December a good time to visit Osaka?
December is a cooler month, suitable for travelers who prefer mild weather and fewer crowds. Pack warm layers and enjoy indoor attractions.
Other Months for Osaka
Cities with Similar December Climate (Humid Subtropical)
Data Source: Open-Meteo historical archive (2020-01-01 to 2024-12-31). Daily measurements aggregated into monthly climate normals. Coordinates: 34.69°, 135.5°. Timezone: Asia/Tokyo. Last updated: 2026-07-30.