Sao Beach sea temperature today: 30°C – beach water temperature, Sao Beach, Vietnam
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Vietnam · Phú Quốc
Sao Beach
Sea
29.7°C85.5°F
Air
–
UV
–
Bathtub
Above ⁦28°C⁩

Last updated ·

Today, September 13, the sea temperature at Sao Beach is 29.7 °C (85 °F). That is 0.7 °C warmer than the usual 29 °C in September. Comfortable for swimming year-round.

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Climate · monthly averages

Sea temperature by month

5-year averages (2021–2025). Min/Max are typical daily lows and highs, not record extremes.

Warmest in May (30.8°C). Coldest in January (28.0°C). Comfortable for swimming year-round.

5-year averages (2021–2025). Min/Max are typical daily lows and highs, not record extremes.
MonthSea · MinSea · AvgSea · MaxAir · MinAir · AvgAir · Max
January27.5°C28.0°C28.7°C26.2°C26.7°C27.3°C
February27.9°C28.5°C29.2°C26.5°C27.1°C27.7°C
March28.7°C29.3°C29.7°C27.1°C27.6°C28.2°C
April30.1°C30.4°C31.0°C27.9°C28.4°C28.8°C
May30.3°C30.8°C31.3°C28.1°C28.5°C28.7°C
June29.6°C29.9°C30.3°C27.8°C28.1°C28.2°C
July29.1°C29.5°C29.7°C27.4°C27.8°C27.8°C
August29.0°C29.3°C29.6°C27.2°C27.6°C27.6°C
September28.9°C29.0°C29.2°C26.9°C27.3°C27.3°C
October29.1°C29.5°C29.9°C26.9°C27.4°C27.8°C
November28.9°C29.3°C29.7°C26.9°C27.4°C27.9°C
December27.9°C28.4°C28.9°C26.7°C27.1°C27.9°C

About Sao Beach

The south coast of Phú Quốc, Vietnam's largest island in the Gulf of Thailand, curves into Bãi Sao – a three-kilometre crescent of powder-fine white sand whose grains gave the beach its Vietnamese name, literally star beach. Five kilometres east lies Bãi Khem, a twin south-coast cove of equally fine sand, while the west coast's twenty-kilometre Long Beach, or Bãi Trường, draws sunset crowds. Sea temperatures hold a steady 28–29 °C82–84 °F from November to April, the dry-season window, with Phú Quốc International airport thirty minutes by road.

Frequently asked questions

Today, September 13, the sea at Sao Beach is 29.7 °C (85 °F)85 °F (29.7 °C) – bathtub-warm. The usual September average is 29 °C84 °F.

No single number works for everyone, so the scale on this page is only a guide to how the water feels: below 13 °C55 °F icy, 13–18 °C55–64 °F cold, 18–23 °C64–73 °F refreshing, 23–28 °C73–82 °F pleasantly warm and above 28 °C82 °F like a bath. Right now the sea at Sao Beach is 29.7 °C85 °F.

Yes – the sea at Sao Beach (Phú Quốc, Vietnam) stays swimmable all year. January is the coolest month, averaging 28 °C82 °F – bathtub-warm; the warmest is May at 30.8 °C87 °F.

In May, at 30.8 °C87 °F on average. The coolest month is January at 28 °C82 °F – still above the 18 °C64 °F swimming line, so there is no off-season for swimming.