Water temperature in Guaruja

This data the coastal Guaruja sea water temperature today, tomorrow and the upcoming days. Besides, you can also get information about the weather and surf forecast, as well as the data on sunrise / sunset and moonrise / moonset at a given point on any given day.

Current sea temperature in Guaruja

Water temperature in Guaruja today is 21°C. Based on our historical data over a period of ten years, the warmest water in this day in Guaruja was recorded in 2023 and was 24.8°C, and the coldest was recorded in 2013 at 19.1°C. Sea water temperature in Guaruja is expected to rise to 22°C in the next 10 days. September average water temperature in Guaruja is 21.3°C, the minimum temperature is 19.1°C, and the maximum is 24.8°C.

The swimming season in Guaruja lasts from January to December, twelve months per year! During those months, Guaruja water temperature does not drop below 20°C and therefore suitable for comfortable swimming. The average water temperature in Guaruja in winter reaches 21.2°C, in spring 22.4°C, in summer the average temperature rises to 26.5°C, and in autumn it is 25.5°C.

Guaruja water temperature now

The sea salinity in Guaruja is 34.67‰, and the average salinity of the World Ocean is 35‰.

Surf Forecast in Guaruja for today

Another important indicators for a comfortable holiday on the beach are the presence and height of the waves, as well as the speed and direction of the wind. Please find below data on the swell size for Guaruja. We calculate the swell size based on the mean wave height (trough to crest) of each third highest wave. For more information on surf forecasts for the next ten days, please visit sea state forecast Guaruja. Data in table shown for 27 September 2025, time in GMT 0 format (you can change the time zone on the sea state forecast page)

Surf report in Guaruja

Guaruja weather forecast

Current temperature and weather

Data in a table show Guaruja temperature today (27 September 2025). For more information and forecast for a few days, go to the weather forecast Guaruja.

0-3 h	3-6 h	6-9 h	9-12 h
17.9°C	17.3°C	17.2°C	19.3°C

12-15 h	15-18 h	18-21 h	21-24 h
20.5°C	20.6°C	19°C	18°C

Guaruja water temperature by month

These figures shows the average, minimum and maximum monthly sea temperature in Guaruja. In addition to the table values, the graph below displays of changes average surface temperature during the year. Values are calculated based on the data over the past 10 years. Using them, you can check the water temperature in Guaruja on any day of this period that interests you. Click on the month link and you will see a table for each day, or alternatively you can view the temperature curve of the month and select 2 different years you want to compare, either in a table or as a curve

Chart monthly average water temperature in Guaruja

The nearest beaches and cities from Guaruja with the water temperature today, as well as the air temperature and the state of the weather during the day and the average wave height for today

	Water	Weather		Wave
Bertioga	21.2°C	21°C		1.06 m
Praia Grande	21.3°C	20°C		1.7 m
Sao Vicente	21.3°C	21°C		1.72 m
Juquei	21.7°C	21°C		1.47 m
Itanhaem	21.2°C	21°C		1.65 m
Maresias	21.7°C	21°C		1.4 m
Sao Sebastiao	21.9°C	21°C		1.58 m
Peruibe	21.3°C	21°C		1.56 m
Caraguatatuba	21.9°C	21°C		0.86 m
Ubatuba	22.1°C	22°C		1.23 m

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Our report for Guaruja is compiled using satellite data together with in-situ observations to get the most reliable daily data of sea surface temperatures, surf forecasts, current temperatures and weather forecasts.