Month-specific sea-surface temperature · Portugal

Porto Santo Sea Temperature in July

22.9°C

73.2°F

In July, sea-surface temperature near Porto Santo has a historical monthly average of 22.9°C. This is not the reading for any particular holiday date.

Across 2023–2025, the lowest and highest yearly July monthly means were 22.5–23.2°C. These are not daily extremes.

Previous month

June · 21.3°C

Change into July: +1.6°C

Next month

August · 23.9°C

Change into next month: +1.0°C

Can you swim or snorkel in Porto Santo in July?

At 22.9°C our temperature-only guide describes the water as mild 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?

A rash guard is useful; cold-sensitive snorkelers may prefer a shorty wetsuit.

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 July. Check again close to your trip.

Nearby places in July

Comparable historical averages from independent marine grid cells. Warmer water does not imply safe snorkeling.

Data source and limitations

Source: Open-Meteo Marine API, MeteoFrance sea-surface temperature; 2023–2025. Marine model grid near 33.07, -16.34. Based on 3 yearly monthly means and 2232 recorded samples. Source methodology.

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