Peak Sun Hours in Pasig City, National Capital Region, Philippines
- Solar zone
- Zone 3 (good)
- Best month
- April (6.1)
- Worst month
- December (3.3)
- Climate
- Tropical · 25.8°C
Monthly solar breakdown
| Month | GHI | Clear-sky | DNI | DHI | Temp °C | Humid % |
|---|---|---|---|---|---|---|
| Jan | 3.72 | 5.66 | 3.01 | 1.78 | 23.5 | 86 |
| Feb | 4.51 | 6.37 | 3.62 | 1.94 | 24.0 | 84 |
| Mar | 5.29 | 6.99 | 4.08 | 2.12 | 25.4 | 80 |
| Apr | 6.08 | 7.38 | 4.90 | 2.19 | 27.2 | 76 |
| May | 5.71 | 7.37 | 3.95 | 2.36 | 27.9 | 78 |
| Jun | 5.26 | 7.27 | 3.01 | 2.55 | 27.1 | 84 |
| Jul | 4.72 | 7.20 | 2.21 | 2.49 | 26.3 | 87 |
| Aug | 4.45 | 7.13 | 1.82 | 2.48 | 26.1 | 88 |
| Sep | 4.64 | 6.91 | 2.32 | 2.41 | 26.2 | 88 |
| Oct | 4.19 | 6.40 | 2.47 | 2.13 | 25.8 | 88 |
| Nov | 3.80 | 5.80 | 2.84 | 1.82 | 25.2 | 89 |
| Dec | 3.30 | 5.39 | 2.61 | 1.64 | 24.3 | 89 |
GHI, Clear-sky, DNI, DHI in kWh/m²/day. Data: NASA POWER climatology (long-term monthly averages).
Off-grid calculator
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- 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 3.30 kWh/m²/day, 0.77 system efficiency.
About solar in Pasig City
Pasig City, Philippines has a warm, tropical climate with a distinct wet and dry season. Its annual peak sun hours average 4.64 kWh/m²/day, a good solar resource by global standards.
The strongest month in Pasig City is April (spring) at 6.08 kWh/m²/day, and the weakest is December (winter) at 3.3 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.
Pasig City'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 Pasig City?
- Pasig City averages 4.64 peak sun hours per day annually, ranging from 3.3 in December to 6.08 in April.
- How many solar panels do I need in Pasig City?
- Panel count depends on your daily load. At Pasig City's annual average of 4.64 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 Pasig City?
- Sizing against Pasig City's worst month (December, 3.3 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 Pasig City's solar resource compare globally?
- Pasig City sits in solar zone 3 out of 5 (where 5 is strongest) at 4.64 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 Pasig City?
- Pasig City's dry-season output peaks at 6.08 kWh/m²/day in April; the wet season drops it to 3.3 in December. That ~60% swing is a key sizing consideration.
- Can solar panels survive tropical storms in Pasig City?
- Most tier-1 PV panels are rated for 140+ mph wind loads; mounting hardware usually fails first. In cyclone-prone regions like Philippines, specify IEC 61215-certified panels and anchor-bolt mounts rather than ballasted.
- What's the dry-to-wet output gap in Pasig City?
- Pasig City swings from 6.08 kWh/m²/day in April (dry) to 3.3 in December (wet) — roughly 60%. Year-round off-grid systems must size against the wet-season minimum.