The month in detail
What to expect in September
Autumn marks the end of peak season in Okinawa. Temperatures drop (30°C) and rain returns (48% of days). With 48% of rainy days, always have indoor alternatives planned.
September ranks 12 out of 12 months in Okinawa. Compared to August: −0.9h of sun per day.
This month's conditions
What it's like in September
UV index
7 · high
sunscreen and hat advised
Feels like
very humid
24°
Sea
30°C
warm, ideal
Daylight
12.1h of daylight
Air quality
good
AQI 23
Compare
Is September the right month?
The best month in Okinawa is October (8.3/10), 3.4 pts higher than September.
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 · Okinawa
Expedia →
Activities
Tours, tickets, experiences
See ↓
Flights
Multi-airline comparator
Kiwi →
🎟️ Activities & tours · Okinawa
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 tropical stay.
Country · Japan
🗣️LanguageJapanese
💶CurrencyYen japonais (¥)
🚗DrivingLeft-hand
🛡️Safety ⓘSafe · 2/5
💰Cost of living ⓘModerate · 3/5
🌡️ Climate
🌍Climate typeTropical
📈Climate trend ⓘ+0.61°C/decade
🔥Hottest monthJuly · 30°C
❄️Coolest monthJanuary · 19°C
🌧️Rainiest month ⓘJune · 49%
🏝️ Tropical stay
🌞Dry season ⓘMay → Sep
🌧️Wet season ⓘDec → Mar
🌀Cyclones ⓘSeason Nov-Apr
Explore
Other destinations in September
If September doesn't convince you for this destination, compare with others.
Location
Where is Okinawa ?
Global position + regional geographic context.
🌍 World
🔍 Geographic context
JapanTropical climate with a 8.3 → 4.9 gap between best and worst month. 10 years of ERA5 data to choose by project.
26.33°N · 127.80°E
Questions
Frequently asked questions
What is the best time to visit Okinawa?
October is the best month with 28.0°C highs, 24.0°C lows, 6.6h of sunshine and 29.0% rainy days. The months of October & November offer comparable conditions.
How many hours of sunshine does Okinawa get in October?
Okinawa averages 6.6 sunshine hours per day in October. It is the sunniest month with a climate score of 7.8/10.
What is the rainiest month in Okinawa?
September is the most unfavourable month with September has the lowest climate score of the year and the lowest climate score of the year.
What are the temperatures at night in Okinawa in October?
In October, overnight lows reach 24.0°C, while afternoon highs average 28.0°C.
Is Okinawa good in winter?
In winter (December-February), Okinawa scores 7.1/10 on average — Decent period conditions for cultural visits.. The best month overall remains October with a score of 7.8/10.
When should you avoid Okinawa?
September is the most difficult month to visit Okinawa, with September has the lowest climate score of the year. Climate conditions are at their lowest of the year during this period.
Can you swim in Okinawa in September?
In September, the sea averages 30°C in Okinawa: warm, ideal. Ideal conditions for swimming and snorkeling.
Do you need sun protection in Okinawa in September?
The average UV index reaches 7 in September in Okinawa (high), with about 12.1h of daylight. Sunscreen and hat advised.