Osaka Weather in January
Japan · Humid Subtropical climate · Data averaged from 2020-01-01 to 2024-12-31 (5 years)
January in Osaka sees average temperatures ranging from a low of 1.2°C (34.2°F) to a high of 9.4°C (48.9°F), with a mean of 5.2°C (41.4°F). Compared to the annual average of 16.5°C (61.7°F), this month is 11.3°C cooler than the yearly norm. This is the coldest month of the year, with average lows of 1.2°C (34.2°F). Precipitation averages 52.5mm, making it approximately 100.0mm drier than the monthly average of 153.0mm. The city receives an average of 7.4 hours of sunshine per day during January, with relative humidity averaging 74.1%. Wind speeds reach an average maximum of 22.9 km/h. Snowfall averages 0.5cm during January, which can affect travel plans and outdoor activities. For travelers, this month offers a coldest month of the year 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.
January vs Adjacent Months
| Metric | December | January | February |
|---|---|---|---|
| Mean Temp | 7.1°C (44.8°F) | 5.2°C (41.4°F) | 6.0°C (42.8°F) |
| Rainfall | 38.7mm | 52.5mm | 72.0mm |
| Sunshine | 8.2 hrs | 7.4 hrs | 7.6 hrs |
| Humidity | 72.5% | 74.1% | 72.5% |
| Wind | 20.9 km/h | 22.9 km/h | 23.8 km/h |
| Rainy Days | 7.8 | 12.0 | 11.8 |
| Snowfall | 0.3 cm | 0.5 cm | 0.6 cm |
Seasonal Context
January falls in Winter in the Northern Hemisphere. Winter is the coolest season with the shortest daylight hours. For travelers visiting Osaka in January, 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 January?
The average temperature in Osaka during January ranges from 1.2°C (34.2°F) to 9.4°C (48.9°F), with a mean of 5.2°C (41.4°F).
How much does it rain in Osaka in January?
Osaka receives an average of 52.5mm of precipitation in January, spread across approximately 12.0 rainy days.
What should I pack for Osaka in January?
Based on January weather data, pack warm layers, a medium jacket, and waterproof outerwear.
Is January a good time to visit Osaka?
January 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 January 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.