Peak Sun Hours in Tando Allahyar, Sindh, Pakistan
- Solar zone
- Zone 4 (excellent)
- Best month
- May (7.0)
- Worst month
- December (3.9)
- Climate
- Tropical · 28.1°C
Monthly solar breakdown
| Month | GHI | Clear-sky | DNI | DHI | Temp °C | Humid % |
|---|---|---|---|---|---|---|
| Jan | 4.16 | 4.36 | 4.68 | 1.55 | 17.2 | 32 |
| Feb | 5.04 | 5.28 | 4.98 | 1.86 | 21.0 | 31 |
| Mar | 6.09 | 6.33 | 5.27 | 2.24 | 26.9 | 33 |
| Apr | 6.77 | 6.98 | 4.92 | 2.71 | 32.0 | 35 |
| May | 7.02 | 7.17 | 4.50 | 3.02 | 34.7 | 43 |
| Jun | 6.69 | 6.96 | 3.82 | 3.18 | 35.3 | 49 |
| Jul | 5.90 | 6.52 | 2.74 | 3.19 | 33.9 | 55 |
| Aug | 5.83 | 6.54 | 3.40 | 2.83 | 32.2 | 60 |
| Sep | 5.87 | 6.20 | 4.61 | 2.33 | 31.6 | 56 |
| Oct | 5.40 | 5.50 | 5.38 | 1.80 | 29.8 | 38 |
| Nov | 4.36 | 4.46 | 4.70 | 1.60 | 24.3 | 29 |
| Dec | 3.93 | 4.07 | 4.77 | 1.41 | 18.6 | 29 |
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 3.93 kWh/m²/day, 0.77 system efficiency.
About solar in Tando Allahyar
Tando Allahyar, Pakistan has a warm, tropical climate with a distinct wet and dry season. Its annual peak sun hours average 5.59 kWh/m²/day, a excellent solar resource by global standards.
The strongest month in Tando Allahyar is May (spring) at 7.02 kWh/m²/day, and the weakest is December (winter) at 3.93 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.
Tando Allahyar'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 Tando Allahyar?
- Tando Allahyar averages 5.59 peak sun hours per day annually, ranging from 3.93 in December to 7.02 in May.
- How many solar panels do I need in Tando Allahyar?
- Panel count depends on your daily load. At Tando Allahyar's annual average of 5.59 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 Tando Allahyar?
- Sizing against Tando Allahyar's worst month (December, 3.93 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 Tando Allahyar's solar resource compare globally?
- Tando Allahyar sits in solar zone 4 out of 5 (where 5 is strongest) at 5.59 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 Tando Allahyar?
- Tando Allahyar's dry-season output peaks at 7.02 kWh/m²/day in May; the wet season drops it to 3.93 in December. That ~55% swing is a key sizing consideration.
- Can solar panels survive tropical storms in Tando Allahyar?
- Most tier-1 PV panels are rated for 140+ mph wind loads; mounting hardware usually fails first. In cyclone-prone regions like Pakistan, specify IEC 61215-certified panels and anchor-bolt mounts rather than ballasted.
- What's the dry-to-wet output gap in Tando Allahyar?
- Tando Allahyar swings from 7.02 kWh/m²/day in May (dry) to 3.93 in December (wet) — roughly 55%. Year-round off-grid systems must size against the wet-season minimum.