All data are in degrees Fahrenheit

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Water temperature in São Luís

Detailed information about the current water temperature in São Luís. The trend over the last two weeks, daily averages, and precise forecast of the water temperature changes. Gain a deeper understanding of seasonal dynamics with monthly statistical analyses covering recent years.
Sea temperature in São Luís now

85.1

°F

June 27, 11:44

Trend:

stable

Yesterday:

84.7°F

Tomorrow:

85.0°F

Sunrise:

06:01

Sunset:

18:00

Day Length:

11 h. 59 min.

São Luís in July

Minimum:

81.8°F

Average:

82.7°F

Maximum:

83.7°F

Sea water temperature in São Luís today

As of now, in São Luís, the water temperature is 85.1°F. Swimming in water of this temperature is considered highly warm and would be enjoyable for everyone. At this temperature, you can comfortably engage in water-based activities for extended periods without experiencing discomfort. Today's reading is 0.8°F higher than the average recorded on this particular day in recent years. Since yesterday, there was a slight increase in temperature. This indicates a warming trend over the past day. According to the forecast, we expect the temperature to stay about the same.

Recent sea temperature and forecast

The water temperature today is above average for the last two weeks, showing a small increase in temperature. It is also close to the historical maximum temperature for this date. The maximum temperature recorded for this date was 85.0°F on 2020, while the historical minimum was 83.6°F on 2018.

The water temperature over the last two weeks displayed soome variability. While the two week average stayed close to the historical average, there were some days when the temperature was close to the maximum recorded over the past years. Over the next week, the forecast shows a steady trend, with temperatures staying close to the average of 84.9°F. Both minimum and maximum temperatures expected to be close to the average, offering a week of stable water conditions.

Daily water temperature in São Luís

Date Current Year

actual* / forecast**

last year 10 years average
Jun 13 84.7°F 83.9°F 84.4°F
Jun 14 85.1°F 84.2°F 84.5°F
Jun 15 85.3°F 83.7°F 84.4°F
Jun 16 84.7°F 83.5°F 84.4°F
Jun 17 84.4°F 84.1°F 84.5°F
Jun 18 84.7°F 84.3°F 84.5°F
Jun 19 84.8°F 83.8°F 84.4°F
Jun 20 84.5°F 83.9°F 84.4°F
Jun 21 84.5°F 84.1°F 84.3°F
Jun 22 84.2°F 83.9°F 84.4°F
Jun 23 84.2°F 83.6°F 84.1°F
Jun 24 84.2°F 83.2°F 84.2°F
Jun 25 84.5°F 84.1°F 84.3°F
Jun 26 84.7°F 83.0°F 84.2°F
Jun 27 85.1°F 84.2°F 84.3°F
Jun 28 85.0°F 84.2°F 84.2°F
Jun 29 85.0°F 83.6°F 84.3°F
Jun 30 84.9°F 83.2°F 84.2°F
Jul 1 84.9°F 83.6°F 84.1°F
Jul 2 85.0°F 83.4°F 84.2°F
Jul 3 84.9°F 83.6°F 84.2°F
Jul 4 84.9°F 83.4°F 84.1°F

* actual - actual temperature values

** forecast - projected values for the next week

Real-time coastal temperatures could deviate by several degrees from the provided readings. These deviations often become evident following intense rainfall or strong winds.

Our forecasting methodology leverages a mathematical model, that uses current water and weather conditions, historical records, wind intensity and direction.

Sea water temperature in São Luís by month

In São Luís, the water temperature is comfortable for swimming all year round.
The warmest water in São Luís was recorded on May 22, 2024, reaching a 86.7°F. While the coldest temperature occurred on October 2, 2018, dipping to 80.4°F. The average readings by season are 82.9°F in Winter, 83.9°F in Spring, 83.9°F in Summer, and 82.5°F in Autumn.