All data are in degrees Fahrenheit

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Water temperature in Florianópolis

Detailed information about the current water temperature in Florianópolis. 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 Florianópolis now

68.4

°F

October 18, 18:44

Trend:

decreasing

Yesterday:

69.4°F

Tomorrow:

68.4°F

Sunrise:

05:35

Sunset:

18:24

Day Length:

12 h. 49 min.

Florianópolis in October

Minimum:

76.2°F

Average:

78.2°F

Maximum:

81.4°F

Sea water temperature in Florianópolis today

As of now, in Florianópolis, the water temperature is 68.4°F. Swimming in water of this temperature is seen as relatively warm and enjoyable for some individuals, although many might find it slightly too cool. Today's reading is 1.0°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 is notably higher than the average recorded over the past two weeks, indicating a significant warming trend. It is also close to the historical minimum temperature for this date. The maximum temperature recorded for this date was 70.9°F on 2025, while the historical minimum was 67.6°F on 2022.

Over the last two weeks, the water temperature has stayed slightly lower than historical averages for those days. Over the next week, the forecast shows a steady trend, with temperatures staying close to the average of 68.7°F. Both minimum and maximum temperatures expected to be close to the average, offering a week of stable water conditions.

Daily water temperature in Florianópolis

Date Current Year

actual* / forecast**

last year 10 years average
Oct 4 65.9°F 66.9°F 68.4°F
Oct 5 66.2°F 67.3°F 68.3°F
Oct 6 66.5°F 68.8°F 68.3°F
Oct 7 66.8°F 68.7°F 68.1°F
Oct 8 67.1°F 68.7°F 68.1°F
Oct 9 67.0°F 68.5°F 68.3°F
Oct 10 67.4°F 68.5°F 68.3°F
Oct 11 67.5°F 68.6°F 68.5°F
Oct 12 67.3°F 68.5°F 68.5°F
Oct 13 67.8°F 68.6°F 68.7°F
Oct 14 67.6°F 70.1°F 69.0°F
Oct 15 68.1°F 70.3°F 69.2°F
Oct 16 68.6°F 70.5°F 69.2°F
Oct 17 69.4°F 70.3°F 69.2°F
Oct 18 68.4°F 70.9°F 69.5°F
Oct 19 68.4°F 70.5°F 69.4°F
Oct 20 68.3°F 69.9°F 69.4°F
Oct 21 68.4°F 68.8°F 69.4°F
Oct 22 68.7°F 69.2°F 69.7°F
Oct 23 69.0°F 69.2°F 70.0°F
Oct 24 68.9°F 69.8°F 70.0°F
Oct 25 69.2°F 70.4°F 70.2°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 Florianópolis by month

In Florianópolis, the months December through April offer comfortable swimming conditions, which amounts to 159 swimming days.
The warmest water in Florianópolis was recorded on February 6, 2025, reaching a 83.4°F. While the coldest temperature occurred on June 14, 2016, dipping to 59.3°F. The average readings by season are 77.9°F in Winter, 74.9°F in Spring, 65.2°F in Summer, and 69.2°F in Autumn.