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

82.1

°F

December 14, 01:36

Trend:

decreasing

Yesterday:

82.2°F

Tomorrow:

82.1°F

Sunrise:

05:44

Sunset:

18:00

Day Length:

12 h. 16 min.

São Luís in December

Minimum:

81.9°F

Average:

82.8°F

Maximum:

83.5°F

Sea water temperature in São Luís today

As of now, in São Luís, the water temperature is 82.1°F. It's safe to say that the water is comfortably warm for various water-related activities. Today's reading is 0.7°F lower than the average recorded on this particular day in recent years. The sea temperature remains approximately unchanged from yesterday. According to the forecast, we expect the temperature to stay about the same.

Recent sea temperature and forecast

Today's water temperature closely matches the previous two weeks' average, indicating a stable trend. It is also close to the historical minimum temperature for this date. The maximum temperature recorded for this date was 83.4°F on 2021, while the historical minimum was 82.1°F on 2015.

Observations from the last two weeks indicate that the water temperature was in proximity to the lowest values recorded on those days in the past. Over the next week, the forecast shows a steady trend, with temperatures staying close to the average of 82.0°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
Nov 30 82.0°F 82.5°F 83.0°F
Dec 1 82.1°F 82.5°F 83.0°F
Dec 2 81.5°F 82.6°F 83.0°F
Dec 3 82.1°F 82.5°F 83.0°F
Dec 4 82.3°F 82.8°F 83.0°F
Dec 5 82.0°F 82.8°F 83.0°F
Dec 6 82.5°F 82.7°F 83.0°F
Dec 7 82.4°F 82.5°F 83.0°F
Dec 8 82.6°F 82.5°F 83.0°F
Dec 9 82.4°F 82.7°F 82.9°F
Dec 10 82.1°F 83.2°F 83.0°F
Dec 11 82.4°F 82.9°F 83.1°F
Dec 12 82.6°F 82.6°F 83.1°F
Dec 13 82.2°F 82.6°F 82.9°F
Dec 14 82.1°F 82.8°F 82.9°F
Dec 15 82.1°F 82.4°F 82.8°F
Dec 16 82.1°F 82.8°F 82.8°F
Dec 17 82.0°F 82.8°F 82.7°F
Dec 18 82.1°F 83.2°F 82.8°F
Dec 19 82.1°F 82.6°F 82.8°F
Dec 20 82.0°F 82.8°F 82.7°F
Dec 21 82.0°F 82.8°F 82.7°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, 83.8°F in Spring, 83.9°F in Summer, and 82.5°F in Autumn.