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Florianopolis in September: Weather, Average temperature and Climate

Planning a trip and want to know what the weather in Florianopolis in September will be like? Take a look at our weather guide for Florianopolis, based on historical data.
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September

Weather in Florianopolis in September 2024

OK Weather
Mild
🌧️
Rainy
If you plan to visit Florianopolis in September, the weather is typically alright, with an average high temperature of +22°C during the day and approximately 3 sunny days. Expect some rainy, though, as there are typically 16 rainy days in the month and around 128 mm of precipitation. The weather is changeable so you may have to pack for every eventuality. Search flights in one click on Avionero.

Average weather

☀️
+22°C
Avg. max. temperature
+7°C
Min.
+35°C
Max.
128 mm
Total precipitation
82%
Avg. humidity
3 m/s
Avg. wind
3 ☀️
Sunny Days
9 ⛅️
Cloudy
16 🌦
Rainy
Our opinion: Florianopolis has OK weather in September.

Average temperature in Florianopolis in September

Here are the expected maximum, average and minimum temperatures in Florianopolis for September based on the historical data.
Last Year
Historical Data

The temperature in September is +25°C on average, with a range between a maximum of +32°C during the day and a minimum of +13°C at night.

The average maximum temperature goes down 16% by the end of the month, compared with the beginning of the month, from +24°C to +21°C.

Is Florianopolis warm or cold in September?

Florianopolis is typically mild in September.

Maximum temperatures go up compared to the previous month from +22°C to +22°C. The minimum temperature also goes up from +15°C to +16°C.

Pack a light jacket as it will be warm in the day and cool in the evenings.

Take a look at how September is compared to other months in Florianopolis:

Climate in Florianopolis in September

Florianopolis weather looks like this, on average, in September and the surrounding months.
AugustSeptemberOctober
Avg. temperature
+22°C+22°C+24°C
Min. temperature
+5°C+7°C+12°C
Max. temperature
+33°C+35°C+35°C
Rainfall
92 mm128 mm129 mm
Wind
3 m/s3 m/s3 m/s
Humidity
83%82%82%
Air pressure
1019 HPa1017 HPa1015 HPa
Sunny days
632
Cloudy days
1198
Rainy days
131619
Snowy days
000

September weather is still as ok as in August. The temperature levels stay the same in the area of +22°C for average maximum temperature during the day. Prepare for more rain. Average rainfall goes from 92 mm to 128 mm. It feels drier, as humidity decreases from 83% to 82%. The average wind speed doesn’t change much during September, staying around 3 m/s. The days becoming less sunny, going from 6 sunny days in August to 3 in September.

October brings much the same weather, it remains ok.

Wind

Wind speed in Florianopolis in September based on historical data.
Last Year
Historical Data

The average wind speed is 4 m/s getting up to 6 m/s which is a medium breeze. You can feel it, especially getting out of the water.

The average wind speed in Florianopolis is gradually increasing during September, going from 3 m/s to 3 m/s over the course of the month.

Rain

Amount of rainfall in mm during September in Florianopolis based on historical data.
Last Year
Historical Data
Total precipitation in September is about 88 mm, with a 57% chance of rain on a typical day. The maximum amount of rainfall per day is around 20 mm, which is considered light rain. September is a pretty wet month with over 17 rainy days, so don’t forget to pack an umbrella, raincoat, and a pair of galoshes.
Here’s how September is compared with other months in the amount of precipitation, total mm:
Florianopolis wettest month is January, where a typical day has a 74% chance of precipitation and 171 mm of rainfall per day. July, on the other hand, is the driest month with a mere 42% chance of precipitation and 89 mm of rainfall per day.

How was the weather last September in Florianopolis?

This is the weather in Florianopolis in September 2023:
1 September
☁️
+24°C
2 September
☁️
+21°C
3 September
☁️
+25°C
4 September
🌫️
+26°C
5 September
☁️
+23°C
6 September
☀️
+21°C
7 September
☁️
+23°C
8 September
☁️
+24°C
9 September
☀️
+23°C
10 September
☁️
+23°C
11 September
☀️
+27°C
12 September
☀️
+28°C
13 September
☁️
+26°C
14 September
☁️
+23°C
15 September
☀️
+21°C
16 September
☁️
+26°C
17 September
☀️
+32°C
18 September
🌫️
+32°C
19 September
☁️
+26°C
20 September
☀️
+28°C
21 September
☁️
+28°C
22 September
☁️
+27°C
23 September
☀️
+25°C
24 September
☀️
+27°C
25 September
☁️
+21°C
26 September
🌧️
+23°C
27 September
☁️
+24°C
28 September
☁️
+22°C
29 September
🌧️
+21°C
30 September
🌧️
+21°C
In September 2023 Florianopolis had 9 sunny days, 16 cloudy days, and 3 rainy days. The average maximum temperature was +25°C, with an absolute maximum of +32°C and a minimum of +21°C. The average humidity was 85%, with a maximum of 100% and a minimum of 54%. The average wind speed was 4 m/s, with a maximum of 11 m/s and a minimum of 0 m/s.
Are you planning a trip in September?

Climate Change over Years

This is how Florianopolis climate have been changing during last 43 years period.

The climate in Florianopolis in September has not changed much over the last 43 years.

The average temperature was the lowest in 1983 (+24°C) and the highest in 2019 (+26°C). The driest year was 1988 with only 947 mm of rainfall, and the wettest year was 2022 with 2773 mm.

FAQ

Frequently asked questions about the weather in Florianopolis in September:

Is September a good time to visit Florianopolis?

It’s always a good time to visit Florianopolis, but the weather is changeable in September, so plan a mix of indoor and outdoor activities and exploring, and pack for every eventuality.

Can you sunbathe in Florianopolis in September?

September has mild temperatures in Florianopolis. Not ideal for sunbathing, but still good for daytime outdoor activities, but plan for cool evenings. Pack a light jacket and shorts!

Is Florianopolis rainy in September?

Florianopolis is often rainy in September. You may get a bit damp when outside, so pack an umbrella, and maybe even a raincoat.

Is it sunny in Florianopolis in September?

Usually, it’s not very sunny in Florianopolis in September, often it’s pretty cloudy. Pack for any eventuality; layering can help reduce the number of bulky items needed.

Other cities in Brazil

Check out the weather for other cities in Brazil.

Monthly weather in Florianopolis

Source of the data

For this page, we’ve looked at the typical weather in Florianopolis, based on historical hourly weather data from January 1, 1979, to December 31, 2022.

For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.