Ko Phi Phi Don sea temperature today: 30°C – beach water temperature, Ko Phi Phi Don, Thailand
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Thailand · Phi Phi
Ko Phi Phi Don
Sea
30.2°C86.4°F
Air
–
UV
–
Bathtub
Above ⁦28°C⁩

Last updated ·

Today, September 13, the sea temperature at Ko Phi Phi Don is 30.2 °C (86 °F). That is 0.7 °C warmer than the usual 29.5 °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 (28.6°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
January28.5°C28.6°C28.7°C26.1°C27.2°C28.6°C
February28.8°C29.1°C29.4°C26.6°C27.7°C28.8°C
March29.2°C29.6°C29.9°C27.2°C28.2°C29.1°C
April30.2°C30.5°C31.0°C27.8°C28.5°C29.0°C
May30.5°C30.8°C31.4°C28.1°C28.6°C29.0°C
June29.8°C30.2°C30.6°C27.9°C28.4°C28.6°C
July29.8°C29.9°C30.1°C27.9°C28.3°C28.5°C
August29.6°C29.9°C30.4°C27.5°C27.9°C28.1°C
September29.3°C29.5°C29.6°C27.3°C27.7°C27.9°C
October29.1°C29.6°C29.9°C26.9°C27.4°C27.8°C
November29.0°C29.4°C29.8°C26.4°C27.1°C27.7°C
December28.7°C28.9°C29.1°C26.2°C27.1°C28.3°C

About Ko Phi Phi Don

The Phi Phi archipelago lies in the Andaman Sea off Thailand's southwestern coast, where Ko Phi Phi Don rises 186 metres at its viewpoint above the isthmus splitting Tonsai Bay from Loh Dalum Bay. Day-boats cross to Ko Phi Phi Leh for Maya Bay, the cliff-walled cove from the 2000 film The Beach, while Long Beach on the south shore stays softer and fronts a fringing reef. Sea temperatures hold between 28 and 30 °C82 and 86 °F year-round, with Krabi airport about 90 minutes away by ferry.

Frequently asked questions

Today, September 13, the sea at Ko Phi Phi Don 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 Ko Phi Phi Don is 30.2 °C86 °F.

Yes – the sea at Ko Phi Phi Don (Phi Phi, Thailand) stays swimmable all year. January is the coolest month, averaging 28.6 °C83 °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 28.6 °C83 °F – still above the 18 °C64 °F swimming line, so there is no off-season for swimming.