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Weather in Florianópolis for September 2026

Your guide to Florianópolis weather in September - trends and predictions

    Temperatures

  • Until now, September 2026 in Florianópolis is slightly cooler than the historical average by 1.7 °C.

  • The forecast for the next days in Florianópolis predicts temperatures to be around 19 °C, close to the historical average.

  • In general, the average temperature in Florianópolis at the beginning of September is 19.1 °C. As the month progressed, temperatures tended to noticeably warm up, reaching an average of 21.7 °C by the end of September.

    • Rain 🌧️

  • Florianópolis in September brings notable rainfall, with an average of 18 rainy days and a total precipitation of 98.2 mm.

Average dry days
12
Dry days
Average rainy days
18
Rainy days
Average snowy days
0
Snow days
Average temperatures
21°/15°
Temperatures
Average wind speed
19 km/h
Avg max wind
Average humidity
81 %
Avg humidity

Florianópolis Weather September

Move between months or click on a day
August
October
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
1
Cloudy
21°
2
Patchy rain possible
19°
3
Sunny
23°
4
Sunny
22°
5
Heavy rain at times
16°
6
Overcast
15°
7
Sunny
18°
8
Sunny
21°
9
Sunny
21°
10
Sunny
23°
11
Light rain shower
20°
12
Overcast
19°
13
Light rain shower
15°
14
Light rain shower
16°
15
Patchy rain possible
20°
16
Patchy rain possible
18°
17
Overcast
18°
18
Light rain shower
18°
19
Overcast
24°
20
Light rain shower
22°
21
Light rain shower
21°
22
Light rain shower
16°
23
Sunny
22°
24
Light rain shower
21°
25
Sunny
22°
26
Heavy rain at times
21°
27
Moderate or heavy rain shower
22°
28
Cloudy
20°
29
Sunny
23°
30
Partly cloudy
23°

Temperatures trend during September in Florianópolis

See the weather trend as well as the moving average line

September weather in Florianópolis day by day

Click on a date for more information
August October
Date Weather Temperatures Rain UV More
1 Sept. Cloudy
Cloudy
 21° /16° 3.3 mm 5
2 Sept. Patchy rain possible
Patchy rain possible
 19° /15° 1 mm 5
3 Sept. Sunny
Sunny
 23° /15° 0.2 mm 6
4 Sept. Sunny
Sunny
 22° /14° 2.2 mm 6
5 Sept. Heavy rain at times
Heavy rain at times
 16° /13° 9.5 mm 4
6 Sept. Overcast
Overcast
 15° /11° 1.5 mm 5
7 Sept. Sunny
Sunny
 18° /12° 0.1 mm 6
8 Sept. Sunny
Sunny
 21° /14° 1.7 mm 6
9 Sept. Sunny
Sunny
 21° /15° 4.1 mm 6
10 Sept. Sunny
Sunny
 23° /15° 0 mm 7
11 Sept. Light rain shower
Light rain shower
 20° /18° 34.8 mm 3.8
12 Sept. Overcast
Overcast
 19° /15° 0.6 mm 5.8
13 Sept. Light rain shower
Light rain shower
 15° /14° 21.6 mm 1.6
14 Sept. Light rain shower
Light rain shower
 16° /14° 33.1 mm 0.7
15 Sept. Patchy rain possible
Patchy rain possible
 20° /15° 2.5 mm 6
16 Sept. Patchy rain possible
Patchy rain possible
 18° /14° 0.4 mm 6
17 Sept. Overcast
Overcast
 18° /14° 0.1 mm 5
18 Sept. Light rain shower
Light rain shower
 18° /16° 10.3 mm 5
19 Sept. Overcast
Overcast
 24° /17° 3.4 mm 6
20 Sept. Light rain shower
Light rain shower
 22° /17° 5.3 mm 7
21 Sept. Light rain shower
Light rain shower
 21° /14° 2.4 mm 6
22 Sept. Light rain shower
Light rain shower
 16° /10° 11.7 mm 5
23 Sept. Sunny
Sunny
 22° /10° 6.2 mm 7
24 Sept. Light rain shower
Light rain shower
 21° /15° 6.4 mm 7
25 Sept. Sunny
Sunny
 22° /16° 0.8 mm 7
26 Sept. Heavy rain at times
Heavy rain at times
 21° /16° 6.7 mm 6
27 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
 22° /15° 4.9 mm 6
28 Sept. Cloudy
Cloudy
 20° /14° 1.1 mm 6
29 Sept. Sunny
Sunny
 23° /14° 0.1 mm 7
30 Sept. Partly cloudy
Partly cloudy
 23° /16° 2.4 mm 7
Next
Important Notice
Our weather forecast for Florianópolis in September is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Florianópolis forecast closer to your planned date for the most up-to-date weather information.
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Florianópolis in September - FAQ

What are the expected maximum and minimum temperatures in Florianópolis during September?
During September, expect a variety of temperatures with highs around 21° and lows near 15°, suitable for diverse activities and preferences.

How much rainfall should be expected in Florianópolis during September?
Moderate rainfall is anticipated in Florianópolis during September, with a total of 98.2 mm spread over approximately 18 days. Considering plans for rainy days is advisable.

What are the typical wind conditions in Florianópolis during September?
The average wind speed in Florianópolis during September is 19 km/h, suggesting breezy to windy conditions, depending on your activities.

September rainfall patterns in Florianópolis

Explore the daily rainfall trends and prepare for Florianópoliss September weather 💧
Typically, Florianópolis has 18 rainy days in September with a total of 98.2 mm of rainfall.

UV exposure in Florianópolis during September

Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️

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Location coordinates Where is Florianópolis?

Get accurate weather forecasts for Florianópolis, located at latitude -27.597 and longitude -48.549. Stay updated with localized weather information tailored for Florianópolis.

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