Sea temperature in Saint Vincent and the Grenadines
Live water temperatures and swimming conditions across 4 beaches on the Saint Vincent and the Grenadines coast.
Best time to swim in Saint Vincent and the Grenadines
The sea in Saint Vincent and the Grenadines peaks in August, 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 27°C, when cold-water swimmers dominate the coast.
Saint Vincent and the Grenadines sea temperature history
Long-term climatology for Saint Vincent and the Grenadines shows an annual mean sea temperature of 28°C, ranging from 27°C in winter to 29°C at the summer peak.
The seasonal swing is roughly 2°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 Saint Vincent and the Grenadines, 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.
Saint Vincent and the Grenadines sea temperature: frequently asked questions
What is the warmest month to swim in Saint Vincent and the Grenadines?
August is the warmest month in Saint Vincent and the Grenadines, when the sea averages about 29°C. Late-season warmth often persists a few weeks after peak.
When is the sea coldest in Saint Vincent and the Grenadines?
The coldest month in Saint Vincent and the Grenadines is typically January, when the water averages around 27°C. Cold-water swimmers and surfers dominate this period.
When can you swim in Saint Vincent and the Grenadines without a wetsuit?
The main swimming season in Saint Vincent and the Grenadines 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 Saint Vincent and the Grenadines?
Saint Vincent and the Grenadines 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 Saint Vincent and the Grenadines?
The long-term annual mean sea temperature in Saint Vincent and the Grenadines is about 28°C, based on multi-decadal climatology of the surrounding waters.
How do I check the current sea temperature in Saint Vincent and the Grenadines?
The live reading at the top of this page shows the current sea temperature in Saint Vincent and the Grenadines, 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 Saint Vincent and the Grenadines right now
| Beach | Region | Sea | Swim score |
|---|---|---|---|
| Tobago Cays | Grenadines | — | — |
| Salt Whistle Bay | Grenadines | — | — |
| Princess Margaret Beach | Grenadines | — | — |
| Macaroni Beach Mustique | Grenadines | — | — |