Month-specific sea-surface temperature · Portugal

Lagos Sea Temperature in April

16.5°C

61.7°F

In April, sea-surface temperature near Lagos has a historical monthly average of 16.5°C. This is not the reading for any particular holiday date.

Across 2023–2025, the lowest and highest yearly April monthly means were 16.3–16.6°C. These are not daily extremes.

Previous month

March · 15.6°C

Change into April: +0.9°C

Next month

May · 16.6°C

Change into next month: +0.1°C

Can you swim or snorkel in Lagos in April?

At 16.5°C our temperature-only guide describes the water as cold water. Comfort depends on your cold tolerance, immersion time and wind. A historical average cannot determine whether conditions are safe on any given day.

Do you need a wetsuit?

Use a full 3-5 mm wetsuit and keep the session within your cold-water experience.

Which beach should you choose?

Look for a beach sheltered from the actual forecast waves and wind on your visit. Exposure, currents and entry conditions vary even where water temperatures are similar. Follow local warnings.

Check the current waves, wind and snorkeling forecast →

A live forecast does not predict a future April. Check again close to your trip.

Lagos Sea Temperature: All 12 Months

Choose a month for available historical evidence, month comparisons and swim guidance. Missing history is clearly marked and never presented as a long-term normal.

January 16.4°C February 16.0°C March 15.6°C April 16.5°C May 16.6°C June 17.8°C July 17.4°C August 17.4°C September 17.0°C October 18.3°C November 17.6°C December 16.9°C

Data source and limitations

Source: Open-Meteo Marine API, MeteoFrance sea-surface temperature; 2023–2025. Marine model grid near 37.10, -8.67. Based on 3 yearly monthly means and 2160 recorded samples. Source methodology.

Modelled sea-surface temperatures do not establish underwater visibility, wildlife, calm currents or safe entry.