Sea temperature in Madagascar
Live water temperatures and swimming conditions across 4 beaches on the Madagascar coast.
Best time to swim in Madagascar
The sea in Madagascar peaks in October, when the water averages around 29°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 28°C, when cold-water swimmers dominate the coast.
Madagascar sea temperature history
Long-term climatology for Madagascar shows an annual mean sea temperature of 28°C, ranging from 28°C in winter to 29°C at the summer peak.
The seasonal swing is roughly 1°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 Madagascar, 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.
Values are area averages; individual beaches vary by exposure and depth.
Madagascar sea temperature: frequently asked questions
What is the warmest month to swim in Madagascar?
October is the warmest month in Madagascar, when the sea averages about 29°C. Late-season warmth often persists a few weeks after peak.
When is the sea coldest in Madagascar?
The coldest month in Madagascar is typically January, when the water averages around 28°C. Cold-water swimmers and surfers dominate this period.
When can you swim in Madagascar without a wetsuit?
The main swimming season in Madagascar 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 Madagascar?
Madagascar 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 Madagascar?
The long-term annual mean sea temperature in Madagascar is about 28°C, based on multi-decadal climatology of the surrounding waters.
How do I check the current sea temperature in Madagascar?
The live reading at the top of this page shows the current sea temperature in Madagascar, updated hourly from marine buoy and satellite data. The 7-day forecast covers water, air, waves, wind and UV for the week ahead.
Warmest beaches in Madagascar right now
| Beach | Region | Sea | Swim score |
|---|---|---|---|
| Nosy Be Andilana | Diana | — | — |
| Ifaty Beach | Atsimo-Andrefana | — | — |
| Nosy Iranja | Diana | — | — |
| Andilana Beach | Diana | — | — |