Peak Sun Hours in La Habana Vieja, Havana, Cuba
- Solar zone
- Zone 4 (excellent)
- Best month
- April (6.5)
- Worst month
- December (3.5)
- Climate
- Tropical · 26.3°C
Monthly solar breakdown
| Month | GHI | Clear-sky | DNI | DHI | Temp °C | Humid % |
|---|---|---|---|---|---|---|
| Jan | 3.71 | 4.79 | 4.26 | 1.55 | 22.4 | 74 |
| Feb | 4.62 | 5.65 | 4.97 | 1.72 | 23.5 | 72 |
| Mar | 5.70 | 6.65 | 5.57 | 2.06 | 24.5 | 68 |
| Apr | 6.48 | 7.31 | 5.85 | 2.26 | 26.5 | 65 |
| May | 6.46 | 7.56 | 5.33 | 2.39 | 27.8 | 67 |
| Jun | 6.08 | 7.51 | 4.24 | 2.67 | 28.5 | 73 |
| Jul | 6.41 | 7.43 | 4.67 | 2.64 | 29.0 | 72 |
| Aug | 6.18 | 7.16 | 4.77 | 2.44 | 29.1 | 73 |
| Sep | 5.46 | 6.57 | 4.45 | 2.26 | 28.3 | 76 |
| Oct | 4.64 | 5.75 | 4.40 | 1.90 | 27.1 | 76 |
| Nov | 3.89 | 4.95 | 4.32 | 1.63 | 24.8 | 75 |
| Dec | 3.53 | 4.48 | 4.27 | 1.45 | 23.6 | 76 |
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 3.53 kWh/m²/day, 0.77 system efficiency.
About solar in La Habana Vieja
La Habana Vieja, Cuba has a warm, tropical climate with a distinct wet and dry season. Its annual peak sun hours average 5.26 kWh/m²/day, a excellent solar resource by global standards.
The strongest month in La Habana Vieja is April (spring) at 6.48 kWh/m²/day, and the weakest is December (winter) at 3.53 kWh/m²/day. When sizing a year-round off-grid system, it's standard practice to design against the December value rather than the annual average — otherwise the battery bank runs low during the darkest weeks.
La Habana Vieja'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 La Habana Vieja?
- La Habana Vieja averages 5.26 peak sun hours per day annually, ranging from 3.53 in December to 6.48 in April.
- How many solar panels do I need in La Habana Vieja?
- Panel count depends on your daily load. At La Habana Vieja's annual average of 5.26 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 La Habana Vieja?
- Sizing against La Habana Vieja's worst month (December, 3.53 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 La Habana Vieja's solar resource compare globally?
- La Habana Vieja sits in solar zone 4 out of 5 (where 5 is strongest) at 5.26 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 La Habana Vieja?
- La Habana Vieja's dry-season output peaks at 6.48 kWh/m²/day in April; the wet season drops it to 3.53 in December. That ~56% swing is a key sizing consideration.
- Can solar panels survive tropical storms in La Habana Vieja?
- Most tier-1 PV panels are rated for 140+ mph wind loads; mounting hardware usually fails first. In cyclone-prone regions like Cuba, specify IEC 61215-certified panels and anchor-bolt mounts rather than ballasted.
- What's the dry-to-wet output gap in La Habana Vieja?
- La Habana Vieja swings from 6.48 kWh/m²/day in April (dry) to 3.53 in December (wet) — roughly 56%. Year-round off-grid systems must size against the wet-season minimum.