December
OK
20.8°C / 17.8°C
17 rain days
mild, very wet
- comfortable temperatures (avg high 20.8°C / 69°F)
- outside peak hazard season
- warm evenings without humidity overload
Best time to visit Okinawa (Naha)
Okinawa (Naha), Japan — ranked month by month from data: temperature, rainfall, snow, and peak hazard seasons. Every month has trade-offs — pick what you can tolerate.
Best · December & February
About Okinawa (Naha)
Okinawa Prefecture is the southernmost and westernmost prefecture of Japan. It consists of three main island groups—the Okinawa Islands, the Sakishima Islands, and the Daitō Islands—spread across a maritime zone approximately 1,000 kilometers east to west and 400 kilometers north to south. Despite a modest land area of 2,281 km2, Okinawa's territorial extent over surrounding seas makes its total area nearly half the combined size of Honshu, Shikoku, and Kyushu.
— condensed from Wikipedia ("Okinawa Prefecture")
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Going to Okinawa (Naha) in December?
See exactly what to pack for December's weather — a climate-based list, not generic advice.
December packing list →
Heading to Japan? Land connected with a local Airalo eSIM — installs before you fly, no roaming bill. Get an eSIM →
OK — shoulder months
February
OK
19.6°C / 16.1°C
18 rain days
mild, very wet
- comfortable temperatures (avg high 19.6°C / 67°F)
- outside peak hazard season
- warm evenings without humidity overload
November
OK
24.3°C / 21.3°C
18 rain days
warm, very wet
- comfortable temperatures (avg high 24.3°C / 76°F)
- outside peak hazard season
- warm evenings without humidity overload
Months to skip
January
Skip
19.2°C / 16°C
19 rain days
mild, very wet
- extremely wet (19 rain days)
April
Skip
23.1°C / 19.8°C
19 rain days
warm, very wet
- extremely wet (19 rain days)
March
Skip
21.1°C / 17.5°C
20 rain days
mild, very wet
- extremely wet (20 rain days)
May
Skip
25.9°C / 22.7°C
22 rain days
warm, very wet
- extremely wet (22 rain days)
June
Skip
28.3°C / 25.6°C
26 rain days
hot, very wet
- extremely wet (26 rain days)
July
Skip
29.8°C / 27.1°C
28 rain days
hot, very wet
- extremely wet (28 rain days)
October
Skip
27°C / 24°C
21 rain days
⚠ peak season
warm, very wet
- extremely wet (21 rain days)
- peak typhoon season
September
Skip
29.3°C / 26.2°C
26 rain days
⚠ peak season
hot, very wet
- extremely wet (26 rain days)
- peak typhoon season
August
Skip
29.9°C / 27°C
28 rain days
⚠ peak season
hot, very wet
- extremely wet (28 rain days)
- peak typhoon season
How we ranked these
Each month is scored on temperature comfort (18–27°C avg high is the sweet spot), rainfall (more rain days = lower score), snow days, and peak hazard seasons (hurricanes, monsoons, etc.). Green-tier months are within ideal range with no major issues. Yellow are workable but with trade-offs. Red has at least one significant problem — extreme heat or cold, heavy rain, or peak storm season.
🇯🇵 Japanese survival phrases
The 16 phrases that will earn you smiles, food, and help when you need it. English-speaking travellers — start with the first 4 and add the rest as needed.
Hello
こんにちは
konnichiwa
Thank you
ありがとう
arigatou
Please
お願いします
onegaishimasu
Yes / No
はい / いいえ
hai / iie
Excuse me
すみません
sumimasen
Do you speak English?
英語を話せますか
eigo o hanasemasu ka
I don't understand
分かりません
wakarimasen
How much?
いくらですか
ikura desu ka
The bill, please
お会計お願いします
okaikei onegaishimasu
Water
水
mizu
Where is…?
…はどこですか
wa doko desu ka
Bathroom
トイレ
toire
Help!
助けて
tasukete
Call the police
警察を呼んでください
keisatsu o yonde kudasai
I need a doctor
医者が必要です
isha ga hitsuyou desu
I'm allergic to…
…にアレルギーがあります
ni arerugii ga arimasu
Pronunciations are rough English approximations — they'll get you understood, even if your tones aren't perfect.