Peak Sun Hours in Campinas, São Paulo, Brazil
- Solar zone
- Zone 4 (excellent)
- Best month
- December (6.1)
- Worst month
- June (3.8)
- Climate
- Temperate · 20.5°C
Monthly solar breakdown
| Month | GHI | Clear-sky | DNI | DHI | Temp °C | Humid % |
|---|---|---|---|---|---|---|
| Jan | 5.67 | 8.26 | 3.56 | 2.70 | 22.8 | 82 |
| Feb | 5.84 | 7.83 | 4.35 | 2.39 | 22.9 | 81 |
| Mar | 5.47 | 6.97 | 4.67 | 2.09 | 22.1 | 83 |
| Apr | 4.93 | 5.88 | 5.25 | 1.59 | 20.6 | 82 |
| May | 4.04 | 4.90 | 4.86 | 1.35 | 17.8 | 81 |
| Jun | 3.76 | 4.40 | 5.05 | 1.13 | 17.0 | 79 |
| Jul | 4.02 | 4.67 | 5.44 | 1.10 | 16.8 | 74 |
| Aug | 4.84 | 5.51 | 6.05 | 1.19 | 18.4 | 69 |
| Sep | 5.31 | 6.36 | 5.31 | 1.64 | 20.7 | 67 |
| Oct | 5.77 | 7.43 | 4.62 | 2.25 | 22.2 | 70 |
| Nov | 6.01 | 8.19 | 4.37 | 2.61 | 22.1 | 75 |
| Dec | 6.07 | 8.39 | 4.10 | 2.77 | 22.8 | 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 3.76 kWh/m²/day, 0.77 system efficiency.
About solar in Campinas
Campinas, Brazil has a temperate climate with meaningful seasonal variation in solar resource. Its annual peak sun hours average 5.14 kWh/m²/day, a excellent solar resource by global standards.
The strongest month in Campinas is December (summer) at 6.07 kWh/m²/day, and the weakest is June (winter) at 3.76 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.
Campinas'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 Campinas?
- Campinas averages 5.14 peak sun hours per day annually, ranging from 3.76 in June to 6.07 in December.
- How many solar panels do I need in Campinas?
- Panel count depends on your daily load. At Campinas's annual average of 5.14 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 Campinas?
- Sizing against Campinas's worst month (June, 3.76 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 Campinas's solar resource compare globally?
- Campinas sits in solar zone 4 out of 5 (where 5 is strongest) at 5.14 kWh/m²/day — excellent 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 Campinas?
- Campinas's worst month (June) delivers 3.76 kWh/m²/day — about 62% of the summer peak of 6.07. Off-grid systems here typically oversize 1.5–2× or pair with a backup source.
- Do cloudy days significantly affect Campinas's solar?
- Partly. Diffuse light still produces 10–25% of clear-sky output. Campinas's 5.14 kWh/m²/day already reflects average cloudiness, so no further derating is needed for sizing.
- What panel tilt works best in Campinas?
- At Campinas's latitude (23°), a fixed tilt near 23° balances year-round yield. Winter-heavy loads favor latitude + 15°; summer-heavy, latitude − 15°.