Peak Sun Hours in Joinville, Santa Catarina, Brazil
- Solar zone
- Zone 3 (good)
- Best month
- January (5.7)
- Worst month
- June (2.6)
- Climate
- Temperate · 21.3°C
Monthly solar breakdown
| Month | GHI | Clear-sky | DNI | DHI | Temp °C | Humid % |
|---|---|---|---|---|---|---|
| Jan | 5.74 | 8.23 | 4.08 | 2.50 | 25.1 | 82 |
| Feb | 5.45 | 7.61 | 4.12 | 2.28 | 25.3 | 82 |
| Mar | 4.82 | 6.63 | 4.10 | 1.96 | 24.5 | 82 |
| Apr | 3.93 | 5.41 | 3.97 | 1.54 | 22.7 | 82 |
| May | 3.04 | 4.36 | 3.45 | 1.27 | 19.5 | 83 |
| Jun | 2.60 | 3.80 | 3.09 | 1.12 | 17.7 | 85 |
| Jul | 2.73 | 4.05 | 3.15 | 1.16 | 16.9 | 85 |
| Aug | 3.27 | 4.88 | 3.31 | 1.37 | 17.6 | 84 |
| Sep | 3.68 | 5.92 | 2.87 | 1.72 | 18.9 | 84 |
| Oct | 4.37 | 7.16 | 2.99 | 2.13 | 20.7 | 83 |
| Nov | 5.32 | 8.16 | 3.81 | 2.41 | 22.1 | 81 |
| Dec | 5.63 | 8.42 | 3.96 | 2.51 | 24.0 | 81 |
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 2.60 kWh/m²/day, 0.77 system efficiency.
About solar in Joinville
Joinville, Brazil has a temperate climate with meaningful seasonal variation in solar resource. Its annual peak sun hours average 4.22 kWh/m²/day, a good solar resource by global standards.
The strongest month in Joinville is January (summer) at 5.74 kWh/m²/day, and the weakest is June (winter) at 2.6 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.
Joinville'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 Joinville?
- Joinville averages 4.22 peak sun hours per day annually, ranging from 2.6 in June to 5.74 in January.
- How many solar panels do I need in Joinville?
- Panel count depends on your daily load. At Joinville's annual average of 4.22 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 Joinville?
- Sizing against Joinville's worst month (June, 2.6 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 Joinville's solar resource compare globally?
- Joinville sits in solar zone 3 out of 5 (where 5 is strongest) at 4.22 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 Joinville?
- Joinville's worst month (June) delivers 2.6 kWh/m²/day — about 45% of the summer peak of 5.74. Off-grid systems here typically oversize 1.5–2× or pair with a backup source.
- Do cloudy days significantly affect Joinville's solar?
- Partly. Diffuse light still produces 10–25% of clear-sky output. Joinville's 4.22 kWh/m²/day already reflects average cloudiness, so no further derating is needed for sizing.
- What panel tilt works best in Joinville?
- At Joinville's latitude (26°), a fixed tilt near 26° balances year-round yield. Winter-heavy loads favor latitude + 15°; summer-heavy, latitude − 15°.