Rio Grande do Sul, Brazil
Río de la Plata29.34°S, 49.73°WStation BR-RIO-PRA

Prainha Sea Water Temperature

A mild beach on the Río de la Plata, warmest around February at about 24.7°C. Today's reading, 7-day forecast, and monthly averages below.

Live readings · auto-updating
Water Temperature NowBuoy & Sentinel-3 SST

Prainha water temperature

17.7
63.9°FCool / Refreshing (16°C – 20°C)

Invigorating and crisp. Tolerable for active swimming, but chilly for prolonged casual bathing.

+0°vs Sep avgRío de la Plata29.34°S, 49.73°W
Activity Index:SwimmingSnorkelingSurfingTypical conditions
Marine Atmosphere Grid Live Marine Feed
Coastal Air
19°C
66.6°F onshore
Wind Speed
12 km/h
Surface wind
Wave Height
0.8 m
Slight shore chop
Swell
0.6 m
Deep water swell
Wave Period
6 s
Peak interval
UV Index
—
Daily maximum
Sunrise
—
First morning light
Sunset
—
Golden hour close

7-Day Water Temperature Forecast

Open-Meteo ocean model
Today
WedSep 30
17.7°C
63.9°F
Waves: 1m
Refreshing
ThuOct 1
18°C
64.4°F
Waves: 0.9m
Refreshing
FriOct 2
18.1°C
64.6°F
Waves: 0.7m
Refreshing
SatOct 3
18°C
64.4°F
Waves: 0.6m
Refreshing
SunOct 4
17.7°C
63.9°F
Waves: 0.7m
Refreshing
MonOct 5
17.4°C
63.3°F
Waves: 0.9m
Refreshing
TueOct 6
17.3°C
63.1°F
Waves: 1m
Refreshing
Forecast cooling trend: -0.4°C over 7 days at Prainha.
Confidence: High

Prainha Monthly Water Temperature Averages

Historical monthly climatology. The warmest water in Prainha occurs inJanuary, February, March — peaking at24.7°C (76.5°F) in February.

Year-Round Water Temperature Curve (°C / °F)

Hover a bar for details
Current month Comfortable (20–24°C) Warm (24°C+) Cool (<20°C)
24
Jan
25
Feb
25
Mar
23
Apr
21
May
18
Jun
17
Jul
17
Aug
Current
18
Sep
19
Oct
21
Nov
23
Dec
Full 12-month data table — min / avg / max & swimming comfort
MonthMin Water TempAverage Water TempMax Water TempSwimming Comfort
January21.8°C24.4°C27.2°CWarm & Ideal (24°C – 28°C)
February21.3°C24.7°C28.3°CWarm & Ideal (24°C – 28°C)
March22.4°C24.7°C27.7°CWarm & Ideal (24°C – 28°C)
April21.4°C23.3°C25.2°CComfortable (20°C – 24°C)
May18.7°C20.8°C23.6°CComfortable (20°C – 24°C)
June15.5°C18.3°C22°CCool / Refreshing (16°C – 20°C)
July13.2°C16.5°C19.8°CCool / Refreshing (16°C – 20°C)
August14.2°C16.5°C19.3°CCool / Refreshing (16°C – 20°C)
SeptemberCurrent16°C17.7°C21°CCool / Refreshing (16°C – 20°C)
October15.1°C19.2°C21.8°CCool / Refreshing (16°C – 20°C)
November17.3°C20.7°C22.3°CComfortable (20°C – 24°C)
December20.4°C22.7°C24.4°CComfortable (20°C – 24°C)

Swimming FAQs for Prainha

Is the sea warm enough to swim in Prainha today?

Typical sea surface temperature in Prainha this time of year is 17.7°C (63.9°F) — classified as Cool / Refreshing (16°C – 20°C). Invigorating and crisp. Tolerable for active swimming, but chilly for prolonged casual bathing. Live readings load automatically.

What are the warmest months for swimming in Prainha?

The highest water temperatures in Prainha typically occur duringJanuary, February, March, when monthly averages reach peak seasonal levels.

What is the typical water temperature in Prainha in September?

Historically in September, water temperatures in Prainha average around17.7°C (63.9°F), fluctuating between a recorded minimum of 16°C and a maximum of 21°C.

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