Miyako Water Temperature
Updated Tue 14:54 (Asia/Tokyo)
Japan · Forecast updated Sep 22, 2026, 14:54 UTC
Current Sea Temperature
28.9°C
84.0°F
Very warm water
Valid Sep 22, 2026, 14:54 (Asia/Tokyo). Source: stored Open-Meteo marine forecast. Temperature is not a safety rating or snorkel score.
Versus this month's average
1.3°C below
The typical September average is 30.2°C (86.4°F) from the historical baseline.
Recent trend
Holding fairly steady
Seven-day average: 29.4°C, versus 29.2°C in the prior seven days.
What to wear
Very warm water
Swimwear is usually enough; a rash guard adds sun protection.
Cold tolerance varies. Wind, session length, sunshine, and exertion also affect comfort; temperature alone does not describe sea conditions or replace the snorkel forecast.
Typical Sea Temperature Over the Year
In the historical baseline for Miyako, typical monthly averages range from about 22.0°C (71.6°F) in January to 30.4°C (86.7°F) in August.
Over the past 30 days, the average sea temperature in Miyako has been 29.3°C.
Historical baseline (full year)
Northern Hemisphere. Summer is generally June–August; winter is December–February.
Typical monthly sea-surface temperature near Miyako, calculated from hourly observations for 2023–2025. This is not this site's forecast archive.
| Month | Typical range | Average |
|---|---|---|
| January | 21.7–22.4°C | 22.0°C / 71.6°F |
| February | 21.8–22.7°C | 22.2°C / 72.0°F |
| March | 22.6–22.9°C | 22.7°C / 72.9°F |
| April | 23.3–25.6°C | 24.5°C / 76.1°F |
| May | 26.0–27.5°C | 26.6°C / 79.9°F |
| June | 27.9–28.8°C | 28.4°C / 83.1°F |
| July | 29.3–30.6°C | 29.8°C / 85.6°F |
| August | 30.1–31.1°C | 30.4°C / 86.7°F |
| September | 29.7–30.4°C | 30.2°C / 86.4°F |
| October | 27.9–29.2°C | 28.6°C / 83.5°F |
| November | 25.2–26.4°C | 25.9°C / 78.6°F |
| December | 23.0–23.7°C | 23.5°C / 74.3°F |
Source: Open-Meteo Marine API, MeteoFrance sea-surface temperature dataset. Nearest sea grid cell (24.79, 125.29). Each month is the mean of yearly monthly means; the range is the lowest and highest of those yearly monthly means. Open-Meteo methodology.
Water temperature by month
Each month uses the 2023–2025 baseline. The range is the lowest and highest yearly monthly mean, not an hourly extreme.
Miyako in January
Typical January water temperature near Miyako is 22.0°C (71.6°F), with yearly monthly means from 21.7–22.4°C.
Miyako in February
Typical February water temperature near Miyako is 22.2°C (72.0°F), with yearly monthly means from 21.8–22.7°C.
Miyako in March
Typical March water temperature near Miyako is 22.7°C (72.9°F), with yearly monthly means from 22.6–22.9°C.
Miyako in April
Typical April water temperature near Miyako is 24.5°C (76.1°F), with yearly monthly means from 23.3–25.6°C.
Miyako in May
Typical May water temperature near Miyako is 26.6°C (79.9°F), with yearly monthly means from 26.0–27.5°C.
Miyako in June
Typical June water temperature near Miyako is 28.4°C (83.1°F), with yearly monthly means from 27.9–28.8°C.
Miyako in July
Typical July water temperature near Miyako is 29.8°C (85.6°F), with yearly monthly means from 29.3–30.6°C.
Miyako in August
Typical August water temperature near Miyako is 30.4°C (86.7°F), with yearly monthly means from 30.1–31.1°C.
Miyako in September
Typical September water temperature near Miyako is 30.2°C (86.4°F), with yearly monthly means from 29.7–30.4°C.
Miyako in October
Typical October water temperature near Miyako is 28.6°C (83.5°F), with yearly monthly means from 27.9–29.2°C.
Miyako in November
Typical November water temperature near Miyako is 25.9°C (78.6°F), with yearly monthly means from 25.2–26.4°C.
Miyako in December
Typical December water temperature near Miyako is 23.5°C (74.3°F), with yearly monthly means from 23.0–23.7°C.
Forecast archive (growing)
These values come from hourly forecasts SnorkelForecast has stored. They cover only months with records and do not replace the historical baseline.
| Month | Min | Average | Max |
|---|---|---|---|
| June | 26.8°C / 80.2°F | 28.0°C / 82.5°F | 29.6°C / 85.3°F |
| July | 27.3°C / 81.1°F | 29.5°C / 85.1°F | 31.2°C / 88.2°F |
| August | 28.2°C / 82.8°F | 29.7°C / 85.5°F | 31.7°C / 89.1°F |
| September | 28.7°C / 83.7°F | 29.3°C / 84.7°F | 30.0°C / 86.0°F |
Partial coverage: 4 calendar months with records. Profile calculated from 2735 hourly forecast records across 4 monthly periods. This is a growing archive, not a long-term climate normal.
About the water at Miyako
Okinawan island ringed by white sand and clear coral shallows.
- Area
- Okinawa
Miyako Water Temperature: Common Questions
What is the water temperature in Miyako today?
The current sea surface temperature near Miyako is 28.9°C (84.0°F). Over the last 30 days, the average has been 29.3°C.
When is the water warmest in Miyako?
The water is typically warmest in August, at around 30.4°C (86.7°F) in the 2023–2025 historical baseline.
When is the water coldest in Miyako?
The water is typically coldest in January, at around 22.0°C (71.6°F) in the same historical baseline.
Can you swim in Miyako today?
At 28.9°C, the water is usually comfortable for swimming and snorkeling.
Full Snorkeling Forecast
See how today's sea temperature, wave height, wind, and tides combine into a detailed snorkeling score for Miyako.
View Snorkel Forecast →