Swimming in Florianopolis (Santa Catarina Island) in september 2025: Average sea temperature in september and tide times in september 2025
Average sea temperature in Florianopolis (Santa Catarina Island) in september 2025.
In september, according to seasonal norms, the sea temperature in Florianopolis (Santa Catarina Island) is:
Minimum: 64°F
Average: 67°F
Maximum: 69°F
Other useful seasonal weather averages in september:
- Outside temperature: 63°F to 71°F
- Most common weather: "Clear/Sunny"
- The wind blows at 10.6mph
- It rains a total of 6.5in, over 7 day(s).
Should we swim in Florianopolis (Santa Catarina Island) in september?
Yes... and no. The water temperature in Florianopolis (Santa Catarina Island) in september is cool
Swimming in september on the beaches of Florianopolis (Santa Catarina Island) is possible but the sea water is cool. So even though the sea temperature sometimes climbs to 69°F, it can also be as low as 64°F! Note that the average is 67°F.
Note also that in september, the climate is good with an average outside temperature of 67°F, 6.5in of precipitation (over 7 days) and 88.51 % humidity.
Water and normal seasonal temperatures in Florianopolis (Santa Catarina Island) in september
| September | |||
| Average sea temperature | 67°F | ||
| Minimum sea temperature | 64°F | ||
| Maximum sea temperature | 69°F | ||
| Average outside temperature | 68°F | ||
| Maximum outside temperature | 72°F | ||
| Minimum outside temperature | 63°F | ||
| Wind speed | 11.2mph | ||
| Wind temperature | 63°F | ||
| Precipitation | 6.5in | ||
| Number of days of rain | 7 jour(s) (22%) | ||
| Humidity | 89% | ||
| Visibility in kilometers | 9km | ||
| Cloud cover | 45% | ||
| Our opinion | cool swimming |
Chart of the tides in september 2025
Tide times in september 2025 in Florianopolis (Santa Catarina Island)