Marina Bay sea temperature today: 30°C – beach water temperature, Marina Bay, Singapore
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Singapore · Singapore Strait
Marina Bay
Sea
30.2°C86.4°F
Air
–
UV
–
Bathtub
Above ⁦28°C⁩

Last updated ·

Today, September 13, the sea temperature at Marina Bay is 30.2 °C (86 °F). That is 0.8 °C warmer than the usual 29.5 °C in September. Comfortable for swimming year-round.

Beachfront hotels in this photo: Marina Bay Sands.

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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 (30.4°C). Coldest in January (27.9°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
January27.7°C27.9°C28.1°C25.5°C26.3°C27.0°C
February27.6°C28.0°C28.7°C25.8°C26.7°C27.5°C
March27.9°C28.6°C29.1°C26.4°C27.1°C27.7°C
April29.3°C29.8°C30.4°C26.9°C27.6°C28.2°C
May30.2°C30.4°C30.8°C27.7°C28.3°C28.7°C
June30.2°C30.4°C30.6°C27.6°C28.0°C28.3°C
July29.9°C30.0°C30.1°C27.9°C28.2°C28.4°C
August29.5°C29.7°C29.8°C27.2°C27.6°C27.8°C
September29.1°C29.4°C29.8°C27.4°C27.7°C27.9°C
October29.3°C29.7°C30.0°C27.2°C27.7°C28.1°C
November29.1°C29.7°C30.2°C26.7°C27.3°C27.8°C
December28.6°C28.9°C29.1°C26.1°C26.8°C27.3°C

About Marina Bay

Singapore anchors the southern tip of the Malay Peninsula, where Moshe Safdie's Marina Bay Sands rises as three towers crowned by a 340-metre ship-shaped sky-park holding the world's largest rooftop infinity pool since 2010. Across the water, Gardens by the Bay lifts eighteen Supertree vertical gardens up to 50 metres, lit twice nightly. Swim-grade sand sits on Sentosa Island: Siloso Beach lively on the west, Tanjong Beach quieter on the east. The Singapore Strait stays 28-30 °C82-86 °F year-round, with Changi airport 25 minutes by the East Coast Parkway.

Frequently asked questions

Today, September 13, the sea at Marina Bay is 30.2 °C (86 °F)86 °F (30.2 °C) – bathtub-warm. The usual September average is 29.5 °C85 °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 Marina Bay is 30.2 °C86 °F.

Yes – the sea at Marina Bay (Singapore Strait, Singapore) stays swimmable all year. January is the coolest month, averaging 27.9 °C82 °F – ideal for swimming for most people; the warmest is May at 30.4 °C87 °F.

In May, at 30.4 °C87 °F on average. The coolest month is January at 27.9 °C82 °F – still above the 18 °C64 °F swimming line, so there is no off-season for swimming.