Costa Verde is a coastal area of Portugal on the Atlantic Ocean, with 24 tracked beaches. The sea here ranges from about 14°C in the coolest month to 21°C at the summer peak, with roughly 3 months a year sitting above 20°C — the level most swimmers describe as pleasant without a wetsuit. Use the beach list below to check the current sea temperature at each spot before you head out.
Costa Verde
24 tracked beaches in Costa Verde, Portugal, with live Atlantic Ocean temperatures.
Sea
Atlantic Ocean
Avg sea temp now
21.0°C
Best months
July – September
Best time to swim in Costa Verde
The sea in Costa Verde peaks in August, when the water averages around 21°C.
The main swimming season runs from July – September, when surface temperatures stay comfortable for extended sessions.
On average, 3 months a year sit above 20°C — the threshold most swimmers describe as pleasant without a wetsuit.
Shoulder months like June and October are noticeably cooler but often quieter, with fewer crowds and steadier weather.
Outside peak season the water drops toward 14°C, so a 3/2mm shorty or full wetsuit makes long swims much more comfortable.
The coldest month is typically February at around 14°C, when cold-water swimmers dominate the coast.
Costa Verde sea temperature history
Long-term climatology for Costa Verde shows an annual mean sea temperature of 18°C, ranging from 14°C in winter to 21°C at the summer peak.
The seasonal swing is roughly 7°C between the coldest and warmest month — a useful yardstick when comparing years or checking whether the current sea is running above or below average.
Recent decades have trended slightly warmer at Costa Verde, in line with regional sea-surface temperature records for the wider basin.
Monthly averages below are drawn from multi-decadal climatology and are updated as new observations arrive.
Jan
15°C
Feb
14°C
Mar
15°C
Apr
16°C
May
17°C
Jun
19°C
Jul
20°C
Aug
21°C
Sep
21°C
Oct
19°C
Nov
18°C
Dec
16°C
Values are area averages; individual beaches vary by exposure and depth.
Costa Verde sea temperature: frequently asked questions
What is the warmest month to swim in Costa Verde?
August is the warmest month in Costa Verde, when the sea averages about 21°C. Late-season warmth often persists a few weeks after peak.
When is the sea coldest in Costa Verde?
The coldest month in Costa Verde is typically February, when the water averages around 14°C. Cold-water swimmers and surfers dominate this period.
When can you swim in Costa Verde without a wetsuit?
The main swimming season in Costa Verde runs from July – September — about 3 months a year when the sea sits above 20°C, the level most swimmers describe as pleasant without a wetsuit.
Do I need a wetsuit in Costa Verde?
Outside peak summer the water in Costa Verde drops toward 14°C, so a 3/2mm shorty or full wetsuit makes long swims much more comfortable. In peak months most swimmers go without.
What is the average sea temperature in Costa Verde?
The long-term annual mean sea temperature in Costa Verde is about 18°C, based on multi-decadal climatology of the surrounding waters.
How do I check the current sea temperature in Costa Verde?
The live reading at the top of this page shows the current sea temperature in Costa Verde, updated hourly from marine buoy and satellite data. The 7-day forecast covers water, air, waves, wind and UV for the week ahead.
Beaches in the Costa Verde
Ranked by current live sea temperature.
- 1Praia do Senhor da PedraVila Nova de Gaia, Portugal21.7°C
- 2Praia de EspinhoEspinho, Portugal21.6°C
- 3Praia de Vila Praia de AncoraAncora, Portugal21.6°C
- 4Praia de MindeloVila do Conde, Portugal21.5°C
- 5Praia da MadalenaVila Nova de Gaia, Portugal21.4°C
- 6Praia de MatosinhosMatosinhos, Portugal21.4°C
- 7Praia do Norte VianaViana do Castelo, Portugal21.4°C
- 8Praia da RedondaEsposende, Portugal21.2°C
- 9Praia da GranjaVila Nova de Gaia, Portugal21.1°C
- 10Praia da AgudaArcozelo, Portugal21.1°C
- 11Praia de LecaLeca da Palmeira, Portugal21.1°C
- 12Praia dos CarneirosPorto, Portugal21.0°C
- 13Praia de FaoEsposende, Portugal21.0°C
- 14Praia de MoledoCaminha, Portugal21.0°C
- 15Praia da AngeirasMatosinhos, Portugal20.9°C
- 16Praia de AfifeViana do Castelo, Portugal20.8°C
- 17Praia de MiramarVila Nova de Gaia, Portugal20.7°C
- 18Praia de OfirEsposende, Portugal20.7°C
- 19Praia do Homem do LemePorto, Portugal20.6°C
- 20Praia do Cabedelo Vila do CondeVila do Conde, Portugal20.5°C
- 21Praia de PovoaPovoa de Varzim, Portugal20.5°C
- 22Praia de Cabedelo VianaViana do Castelo, Portugal20.5°C
- 23Praia dos InglesesPorto, Portugal20.3°C
- 24Praia de Vila ChaVila do Conde, Portugal20.3°C
Swimming in the Costa Verde — FAQ
How warm is the sea in the Costa Verde in September?
The Atlantic Ocean off the Costa Verde averages about 21.0°C in September, based on long-term monthly averages for this coast.
When is the best time to swim in the Costa Verde?
The Costa Verde is warmest in August (around 21.0°C) and coldest in February (around 14.0°C). There are typically 0 months a year when the water sits above 22°C.
What is the average yearly sea temperature in the Costa Verde?
Across all twelve months, the sea in the Costa Verde averages about 17.6°C.
Do you need a wetsuit to swim in the Costa Verde?
The sea in the Costa Verde stays below 22°C even at its warmest (~21.0°C in August), so a 3/2mm or thicker wetsuit is recommended for longer swims year-round.