Antigua and Barbuda — Sea Water Temperature and Annual Ranges
Up-to-date sea water temperatures for the coasts of Antigua and Barbuda. 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
Antigua and Barbuda enjoy warm, inviting sea temperatures year-round, making the islands a reliable destination for swimming and water activities. In the coolest months, from December through February, surface temperatures typically hover around 25–26 °C (77–79 °F). As spring progresses, waters rise to roughly 26–27 °C (79–81 °F). The warmest period runs from June through September, when sea temperatures commonly reach 28–30 °C (82–86 °F). Early autumn usually sees temperatures of about 27–29 °C (81–84 °F). These moderate seasonal shifts mean swimmers rarely need more than a swimsuit or light wetsuit; the water is broadly comfortable for extended snorkeling, diving, and swimming sessions throughout the year.
Swimming Conditions
Swimming is generally allowed and widely practiced around Antigua and Barbuda due to the consistently warm sea and numerous accessible beaches and sheltered bays. However, conditions can vary; trade winds and swell often produce choppier surf on exposed Atlantic-facing shores, while leeward Caribbean sides and sheltered harbors remain calmer. The official guidance is to heed local signage and beach-closure notices: authorities may restrict access during storms, heavy surf or hurricane warnings (June–November) because of strong currents, high waves and marine debris. Lifeguard coverage is not universal, so swimmers should exercise normal ocean-safety precautions, be aware of rip currents and reef structures, and follow local advice. When conditions are calm, Antigua and Barbuda provide excellent, safe swimming opportunities year-round.