Kantiang Bay Sea Temperature & Swim Forecast
Curved bay backed by jungle-covered hills.
Very warm water with a light chop and a light breeze — great swimming conditions.
Location
Kantiang Bay on the map, with nearby beaches and live sea temperatures.
7-day forecast
Water, air, waves, wind and UV outlook for the week ahead.
No wetsuit
At 29.0°C the water is warm enough to swim and surf in just a swimsuit or boardshorts.
Recommendation tuned for Kantiang Bay's current water temperature. Individual tolerance, wind chill, and session length all matter — when in doubt, size up.
Can I swim at Kantiang Bay today?
The sea is currently 29.0°C — excellent swimming conditions. Most swimmers will find it pleasant.
- • Located in Ko Lanta, Thailand (Andaman Sea).
- • Best suited to confident swimmers and watersports.
- • Live data refreshed hourly from Open-Meteo Marine.
Monthly sea temperature averages
Tap any month to see what to expect — based on regional climatology.
Best time to swim in Kantiang Bay
The sea in Kantiang Bay 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.
Kantiang Bay sea temperature history
Long-term climatology for Kantiang Bay 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 Kantiang Bay, 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.
Kantiang Bay sea temperature: frequently asked questions
What is the warmest month to swim in Kantiang Bay?
April is the warmest month in Kantiang Bay, when the sea averages about 30°C. Late-season warmth often persists a few weeks after peak.
When is the sea coldest in Kantiang Bay?
The coldest month in Kantiang Bay is typically January, when the water averages around 27°C. Cold-water swimmers and surfers dominate this period.
When can you swim in Kantiang Bay without a wetsuit?
The main swimming season in Kantiang Bay 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 Kantiang Bay?
Kantiang Bay 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 Kantiang Bay?
The long-term annual mean sea temperature in Kantiang Bay is about 29°C, based on multi-decadal climatology of the surrounding waters.
How do I check the current sea temperature in Kantiang Bay?
The live reading at the top of this page shows the current sea temperature in Kantiang Bay, updated hourly from marine buoy and satellite data. The 7-day forecast covers water, air, waves, wind and UV for the week ahead.
Year-round sea temperature
Best swim months: Jan – Feb – Mar – Apr – May – Jun – Jul – Aug – Sep – Oct – Nov – Dec
| Month | Sea | Comfort |
|---|---|---|
| Jan | 27°C | Hot |
| Feb | 28°C | Hot |
| Mar | 29°C | Hot |
| Apr ⭐ | 30°C | Hot |
| May | 30°C | Hot |
| Jun | 29°C | Hot |
| Jul | 29°C | Hot |
| Aug | 29°C | Hot |
| Sep | 29°C | Hot |
| Oct | 29°C | Hot |
| Nov | 28°C | Hot |
| Dec | 27°C | Hot |
Nearby beaches
The closest coastline, with live water temperatures.