Montserrat — Sea Water Temperature and Annual Ranges
Up-to-date sea water temperatures for the coasts of Montserrat. 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
Montserrat’s coastal waters are characteristically warm year-round, typical of the southern Caribbean. Sea surface temperatures generally range from about 26 to 29 °C (79 to 84 °F). The coolest period tends to fall in the winter months (December–February), when averages hover near 26–27 °C (79–81 °F). Spring (March–May) sees a modest rise to around 26–28 °C (79–82 °F). Summer (June–August) commonly warms further to approximately 27–29 °C (81–84 °F), and early autumn (September–November) is often the warmest, with water temperatures frequently reaching the upper part of that range. These steady, mild temperatures make the sea inviting for most visitors throughout the year, with only small seasonal variation compared with more temperate coastlines.
Swimming Conditions
Swimming around Montserrat is generally permitted and popular because the warm water and sheltered bays offer comfortable conditions for bathing, snorkeling, and casual water activities. However, safety and access vary by location: some shorelines are rocky and exposed to currents or swell, so local guidance on entry points is advisable. Importantly, parts of the island lie in zones affected by the Soufrière Hills volcano, and ashfall, pyroclastic hazards, or official exclusion areas can temporarily restrict access to certain beaches and coastal waters; authorities issue advisories when conditions warrant. There is limited lifeguard coverage, so swimmers should exercise usual precautions—avoid isolated spots in rough weather, heed local warnings, and check for any volcanic or maritime notices before entering the water. When conditions are normal, the warm, clear Caribbean sea around Montserrat provides comfortable and enjoyable swimming most of the year.