Brazil · Rio de Janeiro
Ipanema
Sea
21.8°C71.2°F
Air
UV
Refreshing
⁦18–23°C⁩

Last updated ·

Today, September 13, the sea temperature at Ipanema is 21.8 °C (71 °F). That is 0.6 °C warmer than the usual 21.2 °C in September. Comfortable for swimming year-round.

Climate · monthly averages

Sea temperature by month

5-year averages (2021–2025). Min/Max are typical daily lows and highs, not record extremes.

Warmest in March (25.0°C). Coldest in September (21.2°C). Comfortable for swimming year-round.

5-year averages (2021–2025). Min/Max are typical daily lows and highs, not record extremes.
MonthSea · MinSea · AvgSea · MaxAir · MinAir · AvgAir · Max
January23.5°C24.4°C25.5°C24.3°C26.5°C29.0°C
February23.3°C24.7°C25.9°C24.6°C26.8°C29.4°C
March24.1°C25.0°C25.7°C24.4°C26.7°C29.5°C
April23.3°C24.3°C24.8°C22.4°C24.4°C26.9°C
May23.0°C23.4°C23.7°C20.8°C22.9°C25.9°C
June21.6°C22.4°C23.1°C19.4°C21.6°C25.0°C
July21.3°C21.6°C21.8°C18.6°C20.9°C24.3°C
August21.0°C21.4°C22.0°C19.1°C21.5°C24.9°C
September20.5°C21.2°C22.3°C20.4°C22.9°C25.9°C
October19.5°C21.4°C22.8°C21.2°C23.1°C25.4°C
November21.2°C22.4°C23.9°C21.6°C23.8°C26.2°C
December23.0°C23.4°C23.6°C23.2°C25.4°C27.7°C

About Ipanema

Rio's South Zone unfurls along a single Atlantic strip anchored by Dois Irmãos, the 533-metre twin granite peaks that rise above the Vidigal favela and close Ipanema's western horizon. To the west, Leblon Beach runs quieter and more affluent across the Jardim de Alá canal; to the east, Arpoador Beach gathers surfers and sunset crowds on its headland rock. Sea temperatures climb to 26–27 °C79–81 °F from December through March, with Galeão International Airport about 45 minutes by Linha Vermelha.

Frequently asked questions

Today, September 13, the sea at Ipanema is 21.8 °C (71 °F)71 °F (21.8 °C) – refreshing, good for a short swim. The usual September average is 21.2 °C70 °F.

No single number works for everyone, so the scale on this page is only a guide to how the water feels: below 13 °C55 °F icy, 13–18 °C55–64 °F cold, 18–23 °C64–73 °F refreshing, 23–28 °C73–82 °F pleasantly warm and above 28 °C82 °F like a bath. Right now the sea at Ipanema is 21.8 °C71 °F.

Yes – the sea at Ipanema (Rio de Janeiro, Brazil) stays swimmable all year. September is the coolest month, averaging 21.2 °C70 °F – refreshing, good for a short swim; the warmest is March at 25 °C77 °F.

In March, at 25 °C77 °F on average. The coolest month is September at 21.2 °C70 °F – still above the 18 °C64 °F swimming line, so there is no off-season for swimming.