September · Japan
Best time to visit Okinawa in September Weather, crowds & prices
Weather in Okinawa in September
Average temperature 28°C, 193 mm of rain, about 27 days with 6+ hours of sunshine and 81% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
September score
7.0/10
Ranked #5 of 12 months
- Avg temp
- 28°C
- Rainfall
- 193 mm
- Humidity
- 81%
- Days with 6h+ sun
- 27
- Crowd Density
- Moderate Crowds
- Average Expenses
- $$ · Moderate Cost ($$)
September in Okinawa scores 7.0/10 for beach and coastal travel - an above-average month (#5 of 12). Expect around 28°C, 193 mm of rain, and roughly 27 days with 6+ hours of sunshine this month.
Okinawa's Ryukyu castles, coral reefs, and island ferries spread across a subtropical chain south of mainland Japan.
September in Okinawa: strong conditions, 5th of 12
September averages 28°C (82°F) and humidity near 81%, so the practical pattern is early mornings, a long midday break, and evenings back outside.
Monthly rainfall reaches 193 mm — wet for this destination — but about 27 days with 6+ hours of sunshine still break through, so keep one indoor fallback in the plan.
It scores 7/10 here, 5th of 12 months, against 7.3/10 in the destination's best month.
Pack the lightest breathable clothing you own, a hat, and more water than feels necessary, a proper rain shell rather than an umbrella.
Figure on mid-season pricing, with crowds are moderate.
Frequently asked
- What is the weather like in Okinawa in September?
- In September, Okinawa averages 28°C, 193 mm of rain, and about 27 days with 6+ hours of sunshine. Its climate-comfort score is 7.0/10.
- Is September a good time to visit Okinawa?
- September earns a 7.0/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in Okinawa in September?
- Expect about 193 mm of rain in September. Average humidity is 81% and there are about 27 days with 6+ hours of sunshine.
Curated in Okinawa
Tickets & experiences
Things to do in Okinawa
Okinawa, Japan. Live activities and tours from GetYourGuide, matched to this destination.