September is a popular month to ask about Praia do Portinho da Arrabida because conditions can shift week to week along this coast. Expect the water near 21.0°C, with daily variation from wind, tides and recent storms. We refresh the live value from Open-Meteo Marine every hour, so the headline above always reflects the current state of the Atlantic Ocean.
Praia do Portinho da Arrabida sea temperature in September — averages 21.0°C
The sea at Praia do Portinho da Arrabida in Portugal averages 21.0°C during September, based on long-run climatology for the Atlantic Ocean. Use the live reading below for today's actual water and the monthly grid to compare with the rest of the year.
Average sea · September
21.0°C
warm · Excellent
Live water now
…
Recommended wetsuit
Shorty 2mm
At 21.0°C a 2mm shorty keeps surfers warm; lap swimmers can usually skip the neoprene.
Monthly comparison
Yes — comfortable for most swimmers · Praia do Portinho da Arrabida
Can you swim at Praia do Portinho da Arrabida in July? — 20.0°C water20.0°CCan you swim at Praia do Portinho da Arrabida in August? — 21.0°C water21.0°CCan you swim at Praia do Portinho da Arrabida in September? — 21.0°C water21.0°CCan you swim at Praia do Portinho da Arrabida in October? — 19.0°C water19.0°CCan you swim at Praia do Portinho da Arrabida in November? — 18.0°C water18.0°CCan you swim at Praia do Portinho da Arrabida in December? — 16.0°C water16.0°C
Frequently asked questions
What is the average sea temperature at Praia do Portinho da Arrabida in September?
Praia do Portinho da Arrabida averages 21.0°C in September, based on long-run climatology for the Atlantic Ocean.
Is the sea warm enough to swim at Praia do Portinho da Arrabida in September?
Yes, most swimmers find 21.0°C comfortable for unrestricted swimming.
Do I need a wetsuit at Praia do Portinho da Arrabida in September?
Most swimmers don't need a wetsuit; a rash vest helps for longer sessions.
Compare Praia do Portinho da Arrabida with nearby beaches
Praia do Portinho da Arrabida vs Praia dos GalapinhosPraia do Portinho da Arrabida vs Praia da FigueirinhaPraia do Portinho da Arrabida vs Praia de Troia MarPraia do Portinho da Arrabida vs Praia de SesimbraPraia do Portinho da Arrabida vs Praia da CaliforniaPraia do Portinho da Arrabida vs Praia do Ribeiro do Cavalo