Florianopolis — Water Temperature, Sea Conditions & Trends
This page provides clear and up-to-date information about water temperature for Florianopolis (Santa Catarina, Brazil). It includes the current water temperature, daily data for the last month presented in a simple chart, and a 7-day forecast. The page also compares today’s value with typical averages for this period, shows usual monthly ranges during the year, and lists nearby beaches with short descriptions. Local weather for the next few days and general details about Florianopolis help you plan your visit and choose the best time for swimming.
Current Water Temperature
Water temperature in Florianopolis in the Atlantic Ocean today is 19°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
⚠️ As of today, the minimum water temperature ranges from 65°F (18°C) to 68°F (20°C). This is already quite warm water, which is ideal for most people. Swimming becomes comfortable, and prolonged stays in the water do not cause discomfort. This temperature is perfect for family trips and for those who prefer warmer water. It is also comfortable for water sports such as surfing or swimming.
It is important to note that these swimming tips and recommendations apply only in good weather. When the air temperature is below 68°F (20°C), and sometimes even below 77°F (25°C), swimming can be unpleasant even with relatively high water temperatures.
Water Temperature Chart Over the Last 30 Days
Water temperature in Florianopolis has fallen over the last month but risen over the last 7 days. Currently, the sea water temperature at this location matches the average for this day in previous years.
According to our forecast, Water temperature in Florianopolis will be 20.0°C in the next 7 days. See the table below for daily data for the upcoming week.
Table of Daily Sea Temperature Data
| Date | Current | Average | Forecast |
|---|---|---|---|
| JUN 1 | 18.7°C | 20.0°C | |
| JUN 2 | 18.8°C | 20.3°C | |
| JUN 3 | 19.0°C | 20.5°C | |
| JUN 4 | 18.6°C | 20.3°C | |
| JUN 5 | 19.0°C | 20.5°C | |
| JUN 6 | 18.9°C | 20.5°C | |
| JUN 7 | 18.7°C | 20.8°C | |
| JUN 8 | 19.1°C | 20.3°C | |
| JUN 9 | 19.3°C | 20.3°C | 19.3°C |
| JUN 10 | 20.8°C | 19.4°C | |
| JUN 11 | 20.5°C | 19.5°C | |
| JUN 12 | 20.5°C | 19.6°C | |
| JUN 13 | 20.3°C | 19.7°C | |
| JUN 14 | 20.0°C | 19.8°C | |
| JUN 15 | 20.3°C | 19.9°C | |
| JUN 16 | 20.0°C | 20.0°C |
* Current - Actual water temperature value
** Average - Average water temperature on this day in recent years
*** Forecast - Our water temperature forecast
Actual nearshore water temperatures may fluctuate by several degrees from the reported values, especially following heavy rainfall or extended periods of strong winds. Certain wind patterns can cause colder, deeper waters to rise and replace the sun-warmed surface water, leading to noticeable variations.
Our forecast is based on a proprietary mathematical model that considers real-time water temperature changes, historical trends, key weather patterns, wind strength and direction, and air temperature specific to each region. Additionally, we incorporate data from other resorts to enhance accuracy.
Water temperature data for this location is gathered from various sources, including buoys and satellite sea and ocean surface maps provided by the NOAA agency. We also incorporate data from local authorities in each specific location worldwide to ensure more accurate temperature readings.
Annual Water Temperature Overview by Month
Monthly Water Temp Ranges
Annual Water Temperature Trend
Florianópolis, the island capital of Santa Catarina in southern Brazil, sits where Atlantic waters meet a network of bays and lagoons, producing a range of coastal conditions and sea temperatures. Typical seasonal water temperatures run from about 16°C in the coldest winter months (June–August) to roughly 24–27°C in the warmest summer months (December–February). Spring (September–November) and autumn (March–May) see intermediate values, generally around 18–23°C, though sheltered bays and shallow lagoons can feel a few degrees warmer than exposed Atlantic beaches. Local wind, currents and recent weather patterns can cause short-term variation, so day-to-day temperatures will shift within these seasonal bands.
Monthly Water Temperature Range (Min, Max & Average)
| Month | Min | Avg | Max |
|---|---|---|---|
| January | 23°C | 26°C | 28°C |
| February | 24°C | 26°C | 28°C |
| March | 21°C | 26°C | 28°C |
| April | 21°C | 24°C | 27°C |
| May | 19°C | 22°C | 24°C |
| June | 16°C | 20°C | 23°C |
| July | 13°C | 18°C | 21°C |
| August | 15°C | 18°C | 20°C |
| September | 16°C | 19°C | 21°C |
| October | 18°C | 21°C | 23°C |
| November | 19°C | 22°C | 24°C |
| December | 21°C | 24°C | 27°C |
* Click on a month to view detailed water temperature data.
Florianopolis: Weather Forecast
June 10
June 11
June 12
June 13
Location, Beaches & Local Information
Nearby Beaches & Facilities
Praia Do Saco Dos Limoes
Praia Jose Mendes
Praia Do Curtume
Prainha - Florianopolis
Praia Do Arataca
Praia Da Saudade-
Praia Da Costeira Do Pirajubae
Praia Do Meio - Florianolpolis
Praia Do Matadouro
Swimming Conditions
Swimming opportunities in Florianópolis are diverse, catering to families, casual swimmers and surf enthusiasts. Sheltered beaches and warm lagoons offer calmer, often slightly warmer water ideal for relaxed swimming and children, while open-ocean beaches present stronger waves and cooler water that attract surfers and experienced swimmers. During summer, water temperatures around 24–27°C make prolonged swims comfortable without a wetsuit, whereas in winter, when water drops to about 16–19°C, a wetsuit or shorter sessions are advisable. Main beaches typically have lifeguard coverage and facilities in high season, but swimmers should always check local conditions for currents, rips and weather before entering the water. Overall, the island provides year-round coastal recreation, with the best swimming generally from late spring through early autumn.