Okinawa (Naha / Kerama) Sea Water Temperature
Subtropical Japanese island paradise renowned for 'Kerama Blue' waters, coral reefs, and sea turtles. Today's reading, 7-day forecast, and monthly averages below.
Okinawa (Naha / Kerama) water temperature
Very warm bath-like water. Zero chill, exceptional for relaxation and snorkeling.
7-Day Water Temperature Forecast
Okinawa (Naha / Kerama) Monthly Water Temperature Averages
Historical monthly climatology. The warmest water in Okinawa (Naha / Kerama) occurs inApr, May, Jun, Jul, Aug, Sep, Oct, Nov — peaking at29.9°C (85.8°F) in August.
Year-Round Water Temperature Curve (°C / °F)
Hover a bar for detailsFull 12-month data table — min / avg / max & swimming comfort
| Month | Min Water Temp | Average Water Temp | Max Water Temp | Swimming Comfort |
|---|---|---|---|---|
| January | 21°C | 22°C | 23.1°C | Comfortable (20°C – 24°C) |
| February | 20.8°C | 21.7°C | 22.8°C | Comfortable (20°C – 24°C) |
| March | 21.5°C | 22.6°C | 23.8°C | Comfortable (20°C – 24°C) |
| April | 23.1°C | 24.3°C | 25.6°C | Warm & Ideal (24°C – 28°C) |
| May | 25.2°C | 26.5°C | 27.8°C | Warm & Ideal (24°C – 28°C) |
| June | 27.3°C | 28.6°C | 29.8°C | Tropical Warm (> 28°C) |
| July | 28.5°C | 29.6°C | 30.7°C | Tropical Warm (> 28°C) |
| August | 28.8°C | 29.9°C | 31°C | Tropical Warm (> 28°C) |
| SeptemberCurrent | 27.9°C | 29°C | 30.1°C | Tropical Warm (> 28°C) |
| October | 26°C | 27.2°C | 28.4°C | Warm & Ideal (24°C – 28°C) |
| November | 24.1°C | 25.2°C | 26.4°C | Warm & Ideal (24°C – 28°C) |
| December | 22.2°C | 23.2°C | 24.3°C | Comfortable (20°C – 24°C) |
Swimming FAQs for Okinawa (Naha / Kerama)
Is the sea warm enough to swim in Okinawa (Naha / Kerama) today?
Typical sea surface temperature in Okinawa (Naha / Kerama) this time of year is 29°C (84.2°F) — classified as Tropical Warm (> 28°C). Very warm bath-like water. Zero chill, exceptional for relaxation and snorkeling. Live readings load automatically.
What are the warmest months for swimming in Okinawa (Naha / Kerama)?
The highest water temperatures in Okinawa (Naha / Kerama) typically occur duringApr, May, Jun, Jul, Aug, Sep, Oct, Nov, when monthly averages reach peak seasonal levels.
What is the typical water temperature in Okinawa (Naha / Kerama) in September?
Historically in September, water temperatures in Okinawa (Naha / Kerama) average around29°C (84.2°F), fluctuating between a recorded minimum of 27.9°C and a maximum of 30.1°C.