Praia Grande sea temperature
Sea-surface temperature for Praia Grande, Portugal, with the 7-day outlook and what to wear.
What is the sea temperature at Praia Grande today? (3 Sept)
The sea at Praia Grande is 17.0 °C today. A summer full suit is the standard choice at this temperature. The sea is about 8 °C colder than the air, so it will feel cool going in even on a warm day.
Praia Grande sea temperature — next 7 days
Sea temperature is warming across the week, by about 0.0 °C from start to end.
| Date | Sea temp | Range | Suggested wetsuit |
|---|---|---|---|
| Thu 3 Septtoday | 17.4 °C | 16.9–17.9 °C | 3/2 mm full suit |
| Fri 4 Sept | 17.6 °C | 17.3–17.8 °C | 3/2 mm full suit |
| Sat 5 Sept | 17.8 °C | 17.3–18.5 °C | 3/2 mm full suit |
| Sun 6 Sept | 17.9 °C | 17.6–18.2 °C | 3/2 mm full suit |
| Mon 7 Sept | 17.8 °C | 17.5–18.1 °C | 3/2 mm full suit |
| Tue 8 Sept | 17.6 °C | 17.4–17.7 °C | 3/2 mm full suit |
| Wed 9 Sept | 17.4 °C | 17.2–17.6 °C | 3/2 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 Grande 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 Grande
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 Grande today?
The sea at Praia Grande, Portugal is 17.0 °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 Grande?
At 17.0 °C, 3/2 mm full suit is the usual choice at Praia Grande. 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 Grande?
At 17.0 °C the sea at Praia Grande 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 Grande change over a week?
Over the next 7 days the sea at Praia Grande stays between 16.9 °C and 18.5 °C. Open water changes temperature slowly, so it rarely moves much inside a week — seasonal change is what matters.
