September is a popular month to ask about Praia de Sao Joao Caparica 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 de Sao Joao Caparica sea temperature in September — averages 21.0°C
The sea at Praia de Sao Joao Caparica 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 de Sao Joao Caparica
Can you swim at Praia de Sao Joao Caparica in July? — 20.0°C water20.0°CCan you swim at Praia de Sao Joao Caparica in August? — 21.0°C water21.0°CCan you swim at Praia de Sao Joao Caparica in September? — 21.0°C water21.0°CCan you swim at Praia de Sao Joao Caparica in October? — 19.0°C water19.0°CCan you swim at Praia de Sao Joao Caparica in November? — 18.0°C water18.0°CCan you swim at Praia de Sao Joao Caparica in December? — 16.0°C water16.0°C
Frequently asked questions
What is the average sea temperature at Praia de Sao Joao Caparica in September?
Praia de Sao Joao Caparica averages 21.0°C in September, based on long-run climatology for the Atlantic Ocean.
Is the sea warm enough to swim at Praia de Sao Joao Caparica in September?
Yes, most swimmers find 21.0°C comfortable for unrestricted swimming.
Do I need a wetsuit at Praia de Sao Joao Caparica in September?
Most swimmers don't need a wetsuit; a rash vest helps for longer sessions.
Compare Praia de Sao Joao Caparica with nearby beaches
Praia de Sao Joao Caparica vs Praia da Costa da CaparicaPraia de Sao Joao Caparica vs Praia da TorrePraia de Sao Joao Caparica vs Praia de Santo AmaroPraia de Sao Joao Caparica vs Praia de CarcavelosPraia de Sao Joao Caparica vs Praia da Fonte da TelhaPraia de Sao Joao Caparica vs Praia de Carcavelos