Brazil
Florianópolis in September: weather, sea & travel advice
This month's data profile
Rain shapes the decision
Florianópolis in September is climatically well suited to city breaks and active holidays and hiking. The average daily high is around 22 °C, and the sea is about 19 °C. With about 14 rainy days it is wet.
Historical monthly averages, not a weather forecast. Individual days and years can differ substantially.
Rank among 12 monthly averages
63/100 · #11
Warmth
#9
Dryness
#6
Sun
#8
Sea warmth
#10
Published best categories: none
Florianópolis · SeptemberPhoto: No machine-readable author provided. Herbert VAlterE assumed (based on… · CC BY 2.5Climate facts
- Average high
- 22 °C
- Average low
- 14 °C
- Sea
- 19 °C
- Rainy days (est.)
- 14 rainy days (est.)
- Sun (est.)
- 5 h/day
- Humidity
- 83 %
Climate evidence with direct month comparison
The highlighted row is the selected month. Precipitation total and rainy days are separate monthly averages.
| Month | Avg high °C | Avg low °C | Rainy days (est.) | Precipitation mm | Sun h/day (est.) | Humidity % | Wind m/s | Sea °C | Score |
|---|---|---|---|---|---|---|---|---|---|
| August | 21 | 13 | 10 | 97 | 4.2 | 84 | 3.4 | 18 | 65 |
| September (selected) | 22 | 14 | 14 | 143 | 4.7 | 83 | 3.7 | 19 | 63 |
| October | 24 | 16 | 18 | 154 | 5.5 | 83 | 3.9 | 21 | 64 |
How do the previous and next months compare?
Baseline: September (63/100)
Positive and negative values show the change from the selected month.
| Score Δ | Average high Δ | Average low Δ | Rainy days Δ | Rain Δ | Sun Δ | Humidity Δ | Wind Δ | Sea Δ | |
|---|---|---|---|---|---|---|---|---|---|
| August | +2 | -1 °C | -1.6 °C | -3.8 | -46.2 mm | -0.5 h | +0.7 % | -0.4 m/s | -1.1 °C |
| October | +1 | +1.4 °C | +2 °C | +3.6 | +11.2 mm | +0.8 h | +0.3 % | +0.2 m/s | +1.7 °C |
All twelve months in context
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Where to stay in Florianópolis
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Useful next decisions
Frequently asked questions
How warm is Florianópolis in September?
The average daily high is around 22 °C, with an average daily low of about 14 °C.
Can you swim in Florianópolis in September?
The sea is about 19 °C (refreshing).
Does it rain a lot in Florianópolis in September?
The curated estimate is about 14 rainy days per month, not a directly measured long-term average. Total precipitation averages around 143 mm for the month. A rainy day does not mean all-day rain.
When is the best time to visit Florianópolis?
By the climate score, March, April, May and November are the strongest months for Florianópolis. For a beach trip: January, March, April and December. September is not among them.