Florianópolis · AutumnMonth summary
Florianópolis weather in September
✅ Good
🌡️ Temperature min / max
17°C – 22°C
🌧 Rainy days
41% of days
☀️ Sunshine
9.5h per day on average
🌊 🌊 Season
Autumn
⭐ ⭐ Weather score
7.4/10
📅 📅 Best month
April (7.7/10)
Quick decision
Should you visit Florianópolis in September?
✅ Good
✅ Yes if: you want shoulder-season value — fewer crowds, 22°C.
❌ No if: you need maximum sunshine — some overcast days are possible.
Our take: Favourable conditions in September (7.4/10). April scores higher but the gap is small.
By trip type
Florianópolis in September by trip type
- 🏙️ 🏙️ City break / culture : ✅ Good
- 🚶 🚶 Outdoor activities : ⚠️ Possible
- 🏖️ Beach / swimming : ⚠️ Possible
- 💰 💰 Budget : ✅ Low season
Local context
What to expect in September
🎯 Peak season — book ahead for best rates. Accommodation prices at their highest Autumn in Florianópolis is often underrated: 22°C, golden light and declining crowds. An interesting window. Expect rain on 41% of days — a light raincoat in the bag is recommended. Not the best window, but acceptable if dates are constrained. April (7.7/10) is significantly better if possible.
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All months for Florianópolis
Annual table
Month-by-month comparison
| Month | Min °C | Max °C | Rain % | Precip mm | Sun h/d | Score |
|---|---|---|---|---|---|---|
| ⛅ January | 23°C | 28°C | 68% | 5.2 | 11.7h | 7.4/10 |
| ⛅ February | 22°C | 28°C | 63% | 5.6 | 12.0h | 7.5/10 |
| ⛅ March | 22°C | 28°C | 60% | 4.3 | 11.0h | 7.5/10 |
| 🌤️ April | 20°C | 25°C | 42% | 3.4 | 10.6h | 7.7/10 |
| 🌤️ May | 17°C | 23°C | 37% | 3.8 | 9.7h | 7.5/10 |
| 🌤️ June | 15°C | 21°C | 32% | 3.4 | 9.2h | 7.3/10 |
| 🌤️ July | 14°C | 21°C | 21% | 2.1 | 9.7h | 7.6/10 |
| 🌤️ August | 14°C | 21°C | 28% | 2.8 | 10.0h | 7.5/10 |
| 🌤️ September | 17°C | 22°C | 41% | 3.4 | 9.5h | 7.4/10 |
| 🌦️ October | 18°C | 23°C | 56% | 5.3 | 8.6h | 7.1/10 |
| 🌤️ November | 19°C | 25°C | 50% | 4.5 | 11.0h | 7.5/10 |
| 🌤️ December | 21°C | 27°C | 52% | 5.1 | 11.9h | 7.7/10 |
Ideal
Fair
Challenging climate
◀ Current month · Source Open-Meteo · 10 years
📊 Data source
Data based on 10 years of ERA5 records via Open-Meteo, with ECMWF seasonal adjustment. In September, Florianópolis averages 22°C, 41% rainy days and 9.5h of sunshine per day. Overall weather score: 7.4/10.
See methodology →
Comparison
September vs April (best month)
The best month is April (score 7.7/10). Difference:
- 🌡️ Max temperature : +3°C
- 🌧 Rainy days : +1%
- ☀️ Sunshine : +1.1h/day
FAQ
FAQ — Florianópolis in September
Is September a good time to visit Florianópolis?
September is an acceptable time for Florianópolis (score 7.4/10). Conditions are decent but not optimal — consider April (7.7/10) if possible.
What to do in Florianópolis in September?
With 22°C max and 9.5h of sunshine, focus on cultural sites, museums and local gastronomy.
Accommodation
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Activities & tours
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