World sea water temperatures

Water temperature in Florianopolis in September

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Is it warm enough to swim in Florianopolis in September? Average water temperature in Florianopolis in September is 19°C and therefore is not suitable for comfortable swimming. The warmest sea in Florianopolis in September is 22.8°C, and the coldest is 16.9°C. Average high air temperature in Florianopolis in September is 21°C, and average low temperature is 15°C. To find out the sea temperature today and in the coming days, go to Current sea temperature in Florianopolis

Changes water temperature in Florianopolis in September 2025, 2024

To get an accurate forecast for the water temperature in Florianopolis for any chosen month, compare two years within a 10 year range using the chart below. In addition to the sea water temperature in Florianopolis, the selected years in the table also show the values of the maximum and minimum temperatures on each of the days of September.

You can choose any other years:

Year 1:   Year 2:


Day 2025 2024 Min Max
1 September18°C18.2°C16.9°C20.7°C
2 September18°C18°C17°C20.3°C
3 September18.2°C18.7°C16.9°C20.2°C
4 September18.3°C18.4°C17.1°C20.3°C
5 September18.5°C18.4°C17.1°C20.3°C
6 September18.6°C18.2°C17.1°C20.1°C
7 September 18.4°C17.3°C20°C
8 September 18.7°C17.2°C20.1°C
9 September 18.8°C17.5°C20°C
10 September 18.3°C17.6°C20.2°C
11 September 19.6°C17.4°C20.6°C
12 September 19°C17.6°C20.4°C
13 September 19°C17.4°C20.8°C
14 September 19.1°C17.2°C20.8°C
15 September 19°C17.4°C20.6°C
Day 2025 2024 Min Max
16 September 18.8°C17.5°C20.4°C
17 September 18.9°C17.6°C20.8°C
18 September 19.5°C17.6°C20.8°C
19 September 19.4°C17.9°C21°C
20 September 19.4°C17.7°C22.8°C
21 September 19.8°C17.5°C22.1°C
22 September 20.1°C17.6°C21.7°C
23 September 20.3°C17.7°C21.5°C
24 September 19.8°C17.9°C21°C
25 September 19.8°C17.7°C20.9°C
26 September 19.8°C17.1°C20.8°C
27 September 20.6°C17.2°C21°C
28 September 20.3°C17.7°C21.1°C
29 September 20.6°C17.9°C21.3°C
30 September 20.9°C17.9°C21.1°C
Florianopolis water temp chart in September

Average water temperature in Florianopolis in September over a decade

20152016201720182019
19.2°C18.2°C20.5°C19°C18.1°C
20202021202220232024
19.2°C18.9°C18.3°C19.1°C19.3°C

Florianopolis sea state in September

Chart comparing the height of waves in Florianopolis in September over the past years. The red line indicates the height of the waves when swimming in the sea is prohibited. To view the current sea conditions, click on the graph.

Waves height in Florianopolis in September

Weather and climate in Florianopolis in September

This data display average monthly climate indicators in Florianopolis in September based on our historical weather readings over a period of ten years. In addition to temperature, we include data on the number of rainy and sunny days so you can have all the information about your destination before your trip

  • Average HIGH temperature21°C
  • Average LOW temperature15°C
  • Average humidity
    83
  • Average rainfall days11 days
  • Average rainfall5.3''/135mm
  • Average daylight12h
  • Average sunshine4.3h
  • Average UV index8

Florianopolis water temperature during other months:

You can also view information about water temperature for other months by clicking on the month button below

Where is the warm sea water in September?

Want to know where the water temperature in September is good for swimming? Select the continent of interest, the day of the month and the required water temperature

Region
Date (day and month)
Water temperature: min 16°C
 Average temperature  Maximum temperature

Temperature in neighboring cities

The nearest locations with the average water temperature in September. In addition, the maximum and minimum water temperatures for that month, recorded over the last decade, are shown

AvrMinMax
Mole Beach18.9°C16.7°C22.5°C
Barra da Lagoa18.9°C16.7°C22.5°C
Joaquina Beach18.8°C16.7°C22.5°C
Lagoa da Conceicao18.9°C16.6°C22.4°C
Santa Catarina Island18.8°C16.8°C22.4°C
Praia dos Ingleses19°C16.8°C22.6°C
Santinho19°C16.8°C22.6°C
Campeche Beach18.8°C16.7°C22.3°C
Campeche Island18.8°C16.7°C22.3°C
Canasvieiras19°C16.7°C22.4°C

Florianopolis photo gallery

  • Florianopolis

If you have interesting photos of this place, you can upload them here. Photos will be available to all users after verification by the moderator.

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Florianopolis has a "Blue Flag" [1] award

Pebble beach

Dog-friendly place

Florianopolis is equipped for disabled people

Current rating: 5,0 (2 votes cast)

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[1] - The "Blue Flag" is awarded to beaches which fulfill a number of criteria, including: the quality of the bathing water, which must be in accordance with the relevant European Union Directive environmental education and information and beach area management and safety.

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Our report for Florianopolis 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.

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