Peak Sun Hours in Aracaju, Sergipe, Brazil
- Solar zone
- Zone 4 (excellent)
- Best month
- November (6.6)
- Worst month
- June (4.3)
- Climate
- Tropical · 26.3°C
Monthly solar breakdown
| Month | GHI | Clear-sky | DNI | DHI | Temp °C | Humid % |
|---|---|---|---|---|---|---|
| Jan | 6.29 | 7.97 | 4.17 | 2.88 | 27.1 | 75 |
| Feb | 6.01 | 7.85 | 3.83 | 2.78 | 27.4 | 76 |
| Mar | 5.95 | 7.51 | 4.18 | 2.60 | 27.6 | 77 |
| Apr | 5.35 | 6.80 | 4.27 | 2.21 | 27.5 | 77 |
| May | 4.68 | 6.08 | 4.02 | 1.94 | 26.7 | 79 |
| Jun | 4.27 | 5.75 | 3.83 | 1.79 | 25.8 | 78 |
| Jul | 4.37 | 5.94 | 3.76 | 1.88 | 24.9 | 78 |
| Aug | 4.87 | 6.55 | 3.80 | 2.15 | 24.7 | 77 |
| Sep | 5.68 | 7.20 | 4.18 | 2.41 | 25.1 | 76 |
| Oct | 6.21 | 7.67 | 4.50 | 2.55 | 25.9 | 76 |
| Nov | 6.57 | 7.91 | 5.09 | 2.57 | 26.5 | 75 |
| Dec | 6.56 | 7.94 | 4.83 | 2.72 | 26.9 | 75 |
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 4.27 kWh/m²/day, 0.77 system efficiency.
About solar in Aracaju
Aracaju, Brazil has a warm, tropical climate with a distinct wet and dry season. Its annual peak sun hours average 5.57 kWh/m²/day, a excellent solar resource by global standards.
The strongest month in Aracaju is November (spring) at 6.57 kWh/m²/day, and the weakest is June (winter) at 4.27 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.
Aracaju'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 Aracaju?
- Aracaju averages 5.57 peak sun hours per day annually, ranging from 4.27 in June to 6.57 in November.
- How many solar panels do I need in Aracaju?
- Panel count depends on your daily load. At Aracaju's annual average of 5.57 kWh/m²/day, a 5 kWh/day load needs roughly 3 × 400 W panels. Use the calculator above for your actual load.
- What size battery do I need in Aracaju?
- Sizing against Aracaju's worst month (June, 4.27 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 Aracaju's solar resource compare globally?
- Aracaju sits in solar zone 4 out of 5 (where 5 is strongest) at 5.57 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 Aracaju?
- Aracaju's dry-season output peaks at 6.57 kWh/m²/day in November; the wet season drops it to 4.27 in June. That ~41% swing is a key sizing consideration.
- Can solar panels survive tropical storms in Aracaju?
- 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 Aracaju?
- Aracaju swings from 6.57 kWh/m²/day in November (dry) to 4.27 in June (wet) — roughly 41%. Year-round off-grid systems must size against the wet-season minimum.