Peak Sun Hours in Cuiabá, Mato Grosso, Brazil
- Solar zone
- Zone 4 (excellent)
- Best month
- November (5.7)
- Worst month
- June (4.6)
- Climate
- Tropical · 26.6°C
Monthly solar breakdown
| Month | GHI | Clear-sky | DNI | DHI | Temp °C | Humid % |
|---|---|---|---|---|---|---|
| Jan | 5.51 | 7.96 | 3.01 | 2.62 | 26.6 | 79 |
| Feb | 5.46 | 7.69 | 3.12 | 2.50 | 26.4 | 81 |
| Mar | 5.48 | 7.20 | 3.65 | 2.38 | 26.4 | 81 |
| Apr | 5.20 | 6.46 | 4.54 | 1.91 | 25.8 | 80 |
| May | 4.62 | 5.58 | 4.81 | 1.50 | 24.1 | 75 |
| Jun | 4.56 | 5.15 | 5.55 | 1.22 | 24.0 | 66 |
| Jul | 4.90 | 5.40 | 6.03 | 1.15 | 24.6 | 54 |
| Aug | 5.42 | 5.92 | 5.69 | 1.49 | 27.3 | 42 |
| Sep | 5.21 | 6.24 | 3.87 | 2.06 | 29.5 | 44 |
| Oct | 5.46 | 7.20 | 3.43 | 2.40 | 29.5 | 60 |
| Nov | 5.73 | 7.82 | 3.59 | 2.52 | 28.1 | 70 |
| Dec | 5.66 | 7.94 | 3.20 | 2.66 | 27.1 | 77 |
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 4.56 kWh/m²/day, 0.77 system efficiency.
About solar in Cuiabá
Cuiabá, Brazil has a warm, tropical climate with a distinct wet and dry season. Its annual peak sun hours average 5.27 kWh/m²/day, a excellent solar resource by global standards.
The strongest month in Cuiabá is November (spring) at 5.73 kWh/m²/day, and the weakest is June (winter) at 4.56 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.
Cuiabá'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 Cuiabá?
- Cuiabá averages 5.27 peak sun hours per day annually, ranging from 4.56 in June to 5.73 in November.
- How many solar panels do I need in Cuiabá?
- Panel count depends on your daily load. At Cuiabá's annual average of 5.27 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 Cuiabá?
- Sizing against Cuiabá's worst month (June, 4.56 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 Cuiabá's solar resource compare globally?
- Cuiabá sits in solar zone 4 out of 5 (where 5 is strongest) at 5.27 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 does the wet season affect solar generation in Cuiabá?
- Cuiabá's dry-season output peaks at 5.73 kWh/m²/day in November; the wet season drops it to 4.56 in June. That ~22% swing is a key sizing consideration.
- Can solar panels survive tropical storms in Cuiabá?
- Most tier-1 PV panels are rated for 140+ mph wind loads; mounting hardware usually fails first. In cyclone-prone regions like Brazil, specify IEC 61215-certified panels and anchor-bolt mounts rather than ballasted.
- What's the dry-to-wet output gap in Cuiabá?
- Cuiabá swings from 5.73 kWh/m²/day in November (dry) to 4.56 in June (wet) — roughly 22%. Year-round off-grid systems must size against the wet-season minimum.