Eritrea — Sea Water Temperature and Annual Ranges
Up-to-date sea water temperatures for the coasts of Eritrea. 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
Eritrea’s coastline along the Red Sea offers consistently warm water that is attractive for swimming, snorkeling and diving. Sea-surface temperatures there are relatively steady through the year, typically ranging from about 23 to 32 °C (73 to 90 °F). In winter months (December–February) waters are coolest, roughly 23–26 °C (73–79 °F). Spring (March–May) warms to about 25–29 °C (77–84 °F). Summer (June–August) is the warmest period, with temperatures commonly between 28 and 31 °C (82–88 °F), and localized pockets can reach around 32 °C (90 °F) in late summer. Autumn (September–November) usually remains warm, around 27–30 °C (81–86 °F). These modest seasonal shifts mean the sea is generally pleasant for swimming most of the year, with water staying well above temperate-cold levels even in the coolest months.
Swimming Conditions
Swimming along Eritrea’s beaches is generally allowed and practiced, especially around resort areas and coral-rich sites favored by snorkelers and scuba divers. The Red Sea’s clarity and marine life make the coast popular for recreation, but swimmers should be mindful of local conditions and access rules: some stretches are near ports, military zones or fishing areas where entry can be restricted. Occasional strong winds, currents and marine hazards such as jellyfish or sharp coral require caution and local guidance. Water quality is typically good away from urban runoff, but estuaries and harbor zones may be less suitable. Visitors are advised to check local signage, respect protected reef areas and consult operators or authorities for safe swimming spots.