Vavaʻu Water Temperature
Updated Wed 01:18 (Pacific/Tongatapu)
Tonga · Forecast updated Sep 23, 2026, 01:18 UTC
Current Sea Temperature
24.9°C
76.8°F
Mild water
Valid Sep 23, 2026, 01:18 (Pacific/Tongatapu). Source: stored Open-Meteo marine forecast. Temperature is not a safety rating or snorkel score.
Versus this month's average
Close to average
The typical September average is 25.1°C (77.2°F) from the historical baseline.
Recent trend
Cooling by 0.3°C
Seven-day average: 24.9°C, versus 25.2°C in the prior seven days.
What to wear
Mild water
A rash guard is useful; cold-sensitive snorkelers may prefer a shorty wetsuit.
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 Vavaʻu, typical monthly averages range from about 25.1°C (77.2°F) in September to 28.7°C (83.7°F) in February.
Over the past 30 days, the average sea temperature in Vavaʻu has been 24.8°C.
Historical baseline (full year)
Southern Hemisphere. Summer is generally December–February; winter is June–August.
Typical monthly sea-surface temperature near Vavaʻu, calculated from hourly observations for 2023–2025. This is not this site's forecast archive.
| Month | Typical range | Average |
|---|---|---|
| January | 27.8–29.0°C | 28.5°C / 83.3°F |
| February | 28.7–28.7°C | 28.7°C / 83.7°F |
| March | 28.1–28.7°C | 28.5°C / 83.3°F |
| April | 28.0–28.6°C | 28.2°C / 82.8°F |
| May | 26.9–28.0°C | 27.4°C / 81.3°F |
| June | 26.2–26.7°C | 26.5°C / 79.7°F |
| July | 25.6–26.0°C | 25.8°C / 78.4°F |
| August | 25.1–25.6°C | 25.3°C / 77.5°F |
| September | 25.1–25.1°C | 25.1°C / 77.2°F |
| October | 24.8–26.2°C | 25.5°C / 77.9°F |
| November | 26.3–26.7°C | 26.5°C / 79.7°F |
| December | 27.4–27.6°C | 27.5°C / 81.5°F |
Source: Open-Meteo Marine API, MeteoFrance sea-surface temperature dataset. Nearest sea grid cell (-18.63, -173.96). 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.
Vavaʻu in January
Typical January water temperature near Vavaʻu is 28.5°C (83.3°F), with yearly monthly means from 27.8–29.0°C.
Vavaʻu in February
Typical February water temperature near Vavaʻu is 28.7°C (83.7°F), with yearly monthly means from 28.7–28.7°C.
Vavaʻu in March
Typical March water temperature near Vavaʻu is 28.5°C (83.3°F), with yearly monthly means from 28.1–28.7°C.
Vavaʻu in April
Typical April water temperature near Vavaʻu is 28.2°C (82.8°F), with yearly monthly means from 28.0–28.6°C.
Vavaʻu in May
Typical May water temperature near Vavaʻu is 27.4°C (81.3°F), with yearly monthly means from 26.9–28.0°C.
Vavaʻu in June
Typical June water temperature near Vavaʻu is 26.5°C (79.7°F), with yearly monthly means from 26.2–26.7°C.
Vavaʻu in July
Typical July water temperature near Vavaʻu is 25.8°C (78.4°F), with yearly monthly means from 25.6–26.0°C.
Vavaʻu in August
Typical August water temperature near Vavaʻu is 25.3°C (77.5°F), with yearly monthly means from 25.1–25.6°C.
Vavaʻu in September
Typical September water temperature near Vavaʻu is 25.1°C (77.2°F), with yearly monthly means from 25.1–25.1°C.
Vavaʻu in October
Typical October water temperature near Vavaʻu is 25.5°C (77.9°F), with yearly monthly means from 24.8–26.2°C.
Vavaʻu in November
Typical November water temperature near Vavaʻu is 26.5°C (79.7°F), with yearly monthly means from 26.3–26.7°C.
Vavaʻu in December
Typical December water temperature near Vavaʻu is 27.5°C (81.5°F), with yearly monthly means from 27.4–27.6°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 | 25.1°C / 77.2°F | 25.7°C / 78.2°F | 26.4°C / 79.5°F |
| July | 24.0°C / 75.2°F | 24.6°C / 76.3°F | 25.3°C / 77.5°F |
| August | 23.7°C / 74.7°F | 24.0°C / 75.2°F | 25.3°C / 77.5°F |
| September | 24.6°C / 76.3°F | 25.0°C / 77.0°F | 26.0°C / 78.8°F |
Partial coverage: 4 calendar months with records. Profile calculated from 2746 hourly forecast records across 4 monthly periods. This is a growing archive, not a long-term climate normal.
About the water at Vavaʻu
Island group famed for swimming with humpback whales and clear reef water.
- Area
- Vavaʻu
Vavaʻu Water Temperature: Common Questions
What is the water temperature in Vavaʻu today?
The current sea surface temperature near Vavaʻu is 24.9°C (76.8°F). Over the last 30 days, the average has been 24.8°C.
When is the water warmest in Vavaʻu?
The water is typically warmest in February, at around 28.7°C (83.7°F) in the 2023–2025 historical baseline.
When is the water coldest in Vavaʻu?
The water is typically coldest in September, at around 25.1°C (77.2°F) in the same historical baseline.
Can you swim in Vavaʻu today?
At 24.9°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 Vavaʻu.
View Snorkel Forecast →