Praia da Mareta sea temperature
Sea-surface temperature for Praia da Mareta, Portugal, with the 7-day outlook and what to wear.
What is the sea temperature at Praia da Mareta today? (3 Sept)
The sea at Praia da Mareta is 17.1 °C today. A summer full suit is the standard choice at this temperature. The sea is about 2 °C colder than the air, so it will feel cool going in even on a warm day.
Praia da Mareta sea temperature — next 7 days
Sea temperature is cooling across the week, by about 1.4 °C from start to end.
| Date | Sea temp | Range | Suggested wetsuit |
|---|---|---|---|
| Thu 3 Septtoday | 17.7 °C | 17.1–18.3 °C | 3/2 mm full suit |
| Fri 4 Sept | 18.2 °C | 17.9–18.4 °C | 3/2 mm full suit |
| Sat 5 Sept | 18.3 °C | 18.2–18.3 °C | 3/2 mm full suit |
| Sun 6 Sept | 17.6 °C | 17.1–18.2 °C | 3/2 mm full suit |
| Mon 7 Sept | 16.5 °C | 16.4–17.0 °C | 4/3 mm full suit |
| Tue 8 Sept | 16.4 °C | 16.3–16.5 °C | 4/3 mm full suit |
| Wed 9 Sept | 16.3 °C | 16.2–16.4 °C | 4/3 mm full suit |
Figures are modelled sea-surface temperature, not readings from a buoy or a thermometer in the shallows — expect a degree either way, and more in a shallow bay on a hot afternoon. Wetsuit suggestions are general guidance: cold tolerance varies a lot between people, and wind, session length and air temperature matter as much as the water does.
What wetsuit for what sea temperature?
| Sea temperature | Wetsuit | Extras |
|---|---|---|
| 24 °C and above | Boardshorts or swimsuit | — |
| 22–24 °C | Rash vest or 1 mm top | — |
| 19–22 °C | 2 mm shorty or spring suit | — |
| 17–19 °CPraia da Mareta today | 3/2 mm full suit | — |
| 14–17 °C | 4/3 mm full suit | boots on longer sessions |
| 11–14 °C | 5/4 mm full suit | boots and gloves |
| 7–11 °C | 5/4/3 mm hooded full suit | boots and gloves |
| Below 7 °C | 6/5 mm hooded full suit | thick boots and gloves |
Conditions at Praia da Mareta
Water temperature is one input. For wave height, wind and a 0–100 score per sport and ability level, see the full forecast.
Frequently asked questions.
What is the sea temperature at Praia da Mareta today?
The sea at Praia da Mareta, Portugal is 17.1 °C today. This is modelled sea-surface temperature rather than a buoy reading, so allow a degree either way.
What wetsuit do I need at Praia da Mareta?
At 17.1 °C, 3/2 mm full suit is the usual choice at Praia da Mareta. A summer full suit is the standard choice at this temperature. Cold tolerance varies, and wind and session length matter as much as the water temperature.
Is the sea warm enough to swim at Praia da Mareta?
At 17.1 °C the sea at Praia da Mareta is swimmable but brisk — fine for a short swim, and most people want a wetsuit for longer.
How much does the sea temperature at Praia da Mareta change over a week?
Over the next 7 days the sea at Praia da Mareta stays between 16.2 °C and 18.4 °C. Open water changes temperature slowly, so it rarely moves much inside a week — seasonal change is what matters.
