Singapore — Sea Water Temperature and Annual Ranges
Up-to-date sea water temperatures for the coasts of Singapore. 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
Singapore’s location near the equator gives its coastal waters consistently warm temperatures throughout the year. Sea surface temperatures typically range from about 26 to 31 °C (79 to 88 °F), with only modest seasonal variation. During the cooler months around the Northeast Monsoon (roughly December to March) temperatures commonly sit near 26–29 °C (79–84 °F), while in the inter‑monsoon and warmer periods (April to November) they often rise to 27–31 °C (81–88 °F). Local factors such as tides, rainfall and currents can cause short‑term changes, but overall the water remains pleasantly warm for swimming year‑round.
Swimming Conditions
Swimming is generally allowed and popular at Singapore’s public beaches and island shores, with facilities and lifeguards at major spots like Sentosa and East Coast Park during designated hours. Authorities monitor conditions and may put up warning flags or close areas when currents are strong, storms approach or water quality deteriorates after heavy rains. Visibility for snorkeling and diving tends to be limited compared with tropical reefs elsewhere, but sheltered coves and nearby islands offer opportunities for casual snorkeling and marine recreation. As always, swimmers should heed lifeguard instructions and posted advisories, since safety closures and jellyfish warnings can arise despite the consistently warm water temperatures.