When is the best time to swim in the Phuket?

The Phuket is warmest during Year-round, when the Andaman Sea averages 30°C. There are typically 12 months a year when the sea sits above 22°C.

How warm is the sea in the Phuket in July?

The Andaman Sea off the Phuket averages 29.0°C in July.

Phuket sea temperature — Thailand beaches

Phuket

31 tracked beaches in Phuket, Thailand, with live Andaman Sea temperatures.

Sea

Andaman Sea

Avg sea temp now

…

Best months

Year-round

Phuket is a coastal area of Thailand on the Andaman Sea, with 31 tracked beaches. The sea here ranges from about 27°C in the coolest month to 30°C at the summer peak, with roughly 12 months a year sitting above 20°C — the level most swimmers describe as pleasant without a wetsuit. Use the beach list below to check the current sea temperature at each spot before you head out.

Best time to swim in Phuket

The sea in Phuket peaks in April, when the water averages around 30°C.

The main swimming season runs from January – December, when surface temperatures stay comfortable for extended sessions.

On average, 12 months a year sit above 20°C — the threshold most swimmers describe as pleasant without a wetsuit.

The coldest month is typically January at around 27°C, when cold-water swimmers dominate the coast.

Phuket sea temperature history

Long-term climatology for Phuket shows an annual mean sea temperature of 29°C, ranging from 27°C in winter to 30°C at the summer peak.

The seasonal swing is roughly 3°C between the coldest and warmest month — a useful yardstick when comparing years or checking whether the current sea is running above or below average.

Recent decades have trended slightly warmer at Phuket, in line with regional sea-surface temperature records for the wider basin.

Monthly averages below are drawn from multi-decadal climatology and are updated as new observations arrive.

Jan

27°C

Feb

28°C

Mar

29°C

Apr

30°C

May

30°C

Jun

29°C

Jul

29°C

Aug

29°C

Sep

29°C

Oct

29°C

Nov

28°C

Dec

27°C

Values are area averages; individual beaches vary by exposure and depth.

Phuket sea temperature: frequently asked questions

What is the warmest month to swim in Phuket?

April is the warmest month in Phuket, when the sea averages about 30°C. Late-season warmth often persists a few weeks after peak.

When is the sea coldest in Phuket?

The coldest month in Phuket is typically January, when the water averages around 27°C. Cold-water swimmers and surfers dominate this period.

When can you swim in Phuket without a wetsuit?

The main swimming season in Phuket runs from January – December — about 12 months a year when the sea sits above 20°C, the level most swimmers describe as pleasant without a wetsuit.

Do I need a wetsuit in Phuket?

Phuket stays warm year-round, so most swimmers never need a wetsuit — a rash guard is usually enough for sun and wildlife protection.

What is the average sea temperature in Phuket?

The long-term annual mean sea temperature in Phuket is about 29°C, based on multi-decadal climatology of the surrounding waters.

How do I check the current sea temperature in Phuket?

The live reading at the top of this page shows the current sea temperature in Phuket, updated hourly from marine buoy and satellite data. The 7-day forecast covers water, air, waves, wind and UV for the week ahead.

Phuket

Best time to swim in Phuket

Phuket sea temperature history

Phuket sea temperature: frequently asked questions

Beaches in the Phuket

Other regions