Saint Vincent and the Grenadines — Sea Water Temperature and Annual Ranges
Up-to-date sea water temperatures for the coasts of Saint Vincent and the Grenadines. Learn about today’s conditions, monthly averages, and how the surrounding seas and oceans vary by season. We find every place where you can swim and show you the water temperature there today and throughout the year.
Sea Water Temperature Along the Coast
Chart of Average Temperature Changes Over the Last 60 Days
Places with the Warmest Sea Water Today
The Most Popular Seaside Places
Coastal Seas and Oceans
Water Temperature and Swimming Overview
Regions and Map
Water Temperature Trends
Saint Vincent and the Grenadines enjoys warm tropical seas year-round, with typical sea surface temperatures generally ranging from about 26 to 29 °C (79 to 84 °F). The coolest months tend to be late winter and early spring, roughly February and March, when waters can dip to around 25–26 °C (77–79 °F), while the warmest period is late summer into early autumn, especially August and September, when temperatures commonly rise to 29–30 °C (84–86 °F). Because the islands lie in the eastern Caribbean, seasonal variation is modest compared with temperate climates, though surface temperatures can be slightly influenced by local upwelling, trade winds and episodic weather events.
Swimming Conditions
Swimming is widely possible and popular throughout the year thanks to the generally warm, inviting water and numerous sheltered bays and beaches, particularly on the leeward (Caribbean) sides of the islands where conditions are calmer. Snorkeling and diving are excellent in many areas because of coral reefs and clear visibility, though clarity may decline briefly after heavy rains due to runoff. The windward (Atlantic) side can produce stronger swells and currents, and conditions during the June–November hurricane season can make swimming hazardous; local advisories, beach flags and lifeguards (where present) should be heeded. Overall, recreational swimming is allowed and commonly enjoyed, but visitors should take standard precautions: check local conditions, avoid swimming alone or in rough surf, and respect posted warnings to ensure safety and protect marine habitats.