Peak Sun Hours in Florianópolis, Santa Catarina, Brazil
- Solar zone
- Zone 3 (good)
- Best month
- January (5.9)
- Worst month
- June (2.7)
- Climate
- Temperate · 20.4°C
Monthly solar breakdown
| Month | GHI | Clear-sky | DNI | DHI | Temp °C | Humid % |
|---|---|---|---|---|---|---|
| Jan | 5.90 | 8.35 | 4.35 | 2.51 | 24.4 | 80 |
| Feb | 5.52 | 7.68 | 4.34 | 2.25 | 24.6 | 80 |
| Mar | 4.88 | 6.65 | 4.34 | 1.93 | 23.7 | 80 |
| Apr | 3.95 | 5.38 | 4.17 | 1.49 | 21.7 | 80 |
| May | 3.07 | 4.31 | 3.64 | 1.25 | 18.5 | 81 |
| Jun | 2.66 | 3.74 | 3.37 | 1.09 | 16.8 | 83 |
| Jul | 2.80 | 3.97 | 3.44 | 1.12 | 15.9 | 83 |
| Aug | 3.41 | 4.81 | 3.66 | 1.35 | 16.6 | 83 |
| Sep | 3.83 | 5.91 | 3.26 | 1.65 | 17.8 | 83 |
| Oct | 4.53 | 7.23 | 3.30 | 2.13 | 19.7 | 83 |
| Nov | 5.55 | 8.28 | 4.27 | 2.34 | 21.2 | 80 |
| Dec | 5.85 | 8.56 | 4.31 | 2.52 | 23.2 | 79 |
GHI, Clear-sky, DNI, DHI in kWh/m²/day. Data: NASA POWER climatology (long-term monthly averages).
Off-grid calculator
Add appliances
- Add an appliance to size a system.
Sizing
- Daily load
- 0.00 kWh
- Panel wattage
- 0 W
- Panel count (400W modules)
- 0
- Battery bank
- 0.0 kWh
Sizing against worst-month PSH of 2.66 kWh/m²/day, 0.77 system efficiency.
About solar in Florianópolis
Florianópolis, Brazil has a temperate climate with meaningful seasonal variation in solar resource. Its annual peak sun hours average 4.33 kWh/m²/day, a good solar resource by global standards.
The strongest month in Florianópolis is January (summer) at 5.9 kWh/m²/day, and the weakest is June (winter) at 2.66 kWh/m²/day. When sizing a year-round off-grid system, it's standard practice to design against the June value rather than the annual average — otherwise the battery bank runs low during the darkest weeks.
Florianópolis's solar conditions are well within the range where off-grid PV is a straightforward engineering exercise with standard-sized arrays and lithium batteries.
FAQ
- What are the peak sun hours in Florianópolis?
- Florianópolis averages 4.33 peak sun hours per day annually, ranging from 2.66 in June to 5.9 in January.
- How many solar panels do I need in Florianópolis?
- Panel count depends on your daily load. At Florianópolis's annual average of 4.33 kWh/m²/day, a 5 kWh/day load needs roughly 4 × 400 W panels. Use the calculator above for your actual load.
- What size battery do I need in Florianópolis?
- Sizing against Florianópolis's worst month (June, 2.66 kWh/m²/day) with 2 days of autonomy at 80% depth of discharge, a 5 kWh/day load needs about a 12.5 kWh battery bank.
- How does Florianópolis's solar resource compare globally?
- Florianópolis sits in solar zone 3 out of 5 (where 5 is strongest) at 4.33 kWh/m²/day — good by global standards. For reference, top-tier desert sites average ~6.5 and high-latitude cities around 2.5 kWh/m²/day.
- How much does winter reduce solar output in Florianópolis?
- Florianópolis's worst month (June) delivers 2.66 kWh/m²/day — about 45% of the summer peak of 5.9. Off-grid systems here typically oversize 1.5–2× or pair with a backup source.
- Do cloudy days significantly affect Florianópolis's solar?
- Partly. Diffuse light still produces 10–25% of clear-sky output. Florianópolis's 4.33 kWh/m²/day already reflects average cloudiness, so no further derating is needed for sizing.
- What panel tilt works best in Florianópolis?
- At Florianópolis's latitude (28°), a fixed tilt near 28° balances year-round yield. Winter-heavy loads favor latitude + 15°; summer-heavy, latitude − 15°.