The month in detail
What to expect in December
In December, Osaka sees 11°C during the day with 4.9h of sunshine per day. Rain risk remains low (15% of days), leaving good room for outdoor activities.
December ranks 9 out of 12 months in Osaka. Compared to November: −6°C daytime.
This month's conditions
What it's like in December
UV index
3 · moderate
protect during midday hours
Feels like
dry air
3°
Sea
12°C
cold, for the brave
Daylight
9.7h of daylight
Air quality
good
AQI 36
Compare
Is December the right month?
The best month in Osaka is May (8.0/10), 3.7 pts higher than December.
Book
Plan your trip
Hotels at their lowest outside peak season, highest on comfortable months. Shoulder seasons offer a good price/climate compromise.
Stay
Hotels & rentals · Osaka
Expedia →
Activities
Tours, tickets, experiences
See ↓
Flights
Multi-airline comparator
Kiwi →
🎟️ Activities & tours · Osaka
GetYourGuide selection · free cancellation
Practical info
What you need to know before you go
Three angles: the country (language, currency, safety, budget), the year-round climate, and the specifics of a beach holiday.
Country · Japan
🗣️LanguageJapanese
💶CurrencyYen japonais (¥)
🚗DrivingLeft-hand
🛡️Safety ⓘSafe · 2/5
💰Cost of living ⓘModerate · 3/5
🌡️ Climate
🌍Climate typeTemperate oceanic
📈Climate trend ⓘ+1.45°C/decade
🔥Hottest monthAugust · 33°C
❄️Coolest monthJanuary · 9°C
🌧️Rainiest month ⓘJuly · 38%
🏖️ Beach holiday
📅Peak seasonJuin → Sept
🏖️Swell (Sept–Mar) ⓘModérée
Explore
Other destinations in December
If December doesn't convince you for this destination, compare with others.
Location
Where is Osaka ?
Global position + regional geographic context.
🌍 World
🔍 Geographic context
JapanTemperate oceanic climate with a 8.0 → 4.2 gap between best and worst month. 10 years of ERA5 data to choose by project.
34.69°N · 135.50°E
Questions
Frequently asked questions
What is the best time to visit Osaka?
May is the best month with 23.0°C highs, 15.0°C lows, 6.6h of sunshine and 29.0% rainy days. The months of May & June offer comparable conditions.
How many hours of sunshine does Osaka get in May?
Osaka averages 6.6 sunshine hours per day in May. It is the sunniest month with a climate score of 7.4/10.
What is the rainiest month in Osaka?
January is the most unfavourable month with January has the lowest climate score of the year and the lowest climate score of the year.
What are the temperatures at night in Osaka in May?
In May, overnight lows reach 15.0°C, while afternoon highs average 23.0°C.
Is Osaka good in winter?
In winter (December-February), Osaka scores 4.1/10 on average — Difficult period — prefer the peak season.. The best month overall remains May with a score of 7.4/10.
When should you avoid Osaka?
January is the most difficult month to visit Osaka, with January has the lowest climate score of the year. Climate conditions are at their lowest of the year during this period.
Can you swim in Osaka in December?
In December, the sea averages 12°C in Osaka: cold, for the brave. Best left to hardened swimmers or those with a wetsuit.
Do you need sun protection in Osaka in December?
The average UV index reaches 3 in December in Osaka (moderate), with about 9.7h of daylight. Protect during midday hours.