Peak Sun Hours in Serra, Espírito Santo, Brazil
- Solar zone
- Zone 3 (good)
- Best month
- January (6.2)
- Worst month
- June (3.6)
- Climate
- Tropical · 24.5°C
Monthly solar breakdown
| Month | GHI | Clear-sky | DNI | DHI | Temp °C | Humid % |
|---|---|---|---|---|---|---|
| Jan | 6.23 | 8.25 | 4.82 | 2.48 | 26.0 | 82 |
| Feb | 6.22 | 7.88 | 5.28 | 2.25 | 26.4 | 81 |
| Mar | 5.43 | 7.03 | 4.64 | 2.06 | 26.4 | 81 |
| Apr | 4.60 | 6.00 | 4.60 | 1.68 | 25.7 | 80 |
| May | 3.85 | 5.04 | 4.26 | 1.45 | 24.2 | 78 |
| Jun | 3.59 | 4.56 | 4.47 | 1.25 | 23.3 | 79 |
| Jul | 3.77 | 4.82 | 4.69 | 1.25 | 22.6 | 78 |
| Aug | 4.37 | 5.62 | 4.90 | 1.44 | 22.6 | 78 |
| Sep | 4.81 | 6.50 | 4.49 | 1.73 | 23.1 | 78 |
| Oct | 5.19 | 7.45 | 4.02 | 2.15 | 24.0 | 79 |
| Nov | 5.13 | 8.03 | 3.39 | 2.41 | 24.6 | 83 |
| Dec | 5.65 | 8.23 | 3.85 | 2.56 | 25.4 | 84 |
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 3.59 kWh/m²/day, 0.77 system efficiency.
About solar in Serra
Serra, Brazil has a warm, tropical climate with a distinct wet and dry season. Its annual peak sun hours average 4.9 kWh/m²/day, a good solar resource by global standards.
The strongest month in Serra is January (summer) at 6.23 kWh/m²/day, and the weakest is June (winter) at 3.59 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.
Serra'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 Serra?
- Serra averages 4.9 peak sun hours per day annually, ranging from 3.59 in June to 6.23 in January.
- How many solar panels do I need in Serra?
- Panel count depends on your daily load. At Serra's annual average of 4.9 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 Serra?
- Sizing against Serra's worst month (June, 3.59 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 Serra's solar resource compare globally?
- Serra sits in solar zone 3 out of 5 (where 5 is strongest) at 4.9 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 does the wet season affect solar generation in Serra?
- Serra's dry-season output peaks at 6.23 kWh/m²/day in January; the wet season drops it to 3.59 in June. That ~54% swing is a key sizing consideration.
- Can solar panels survive tropical storms in Serra?
- 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 Serra?
- Serra swings from 6.23 kWh/m²/day in January (dry) to 3.59 in June (wet) — roughly 54%. Year-round off-grid systems must size against the wet-season minimum.