Peak Sun Hours in Bahawalpur, Punjab, Pakistan
- Solar zone
- Zone 4 (excellent)
- Best month
- May (6.9)
- Worst month
- December (3.2)
- Climate
- Arid · 27.7°C
Monthly solar breakdown
| Month | GHI | Clear-sky | DNI | DHI | Temp °C | Humid % |
|---|---|---|---|---|---|---|
| Jan | 3.28 | 3.74 | 3.40 | 1.49 | 14.0 | 36 |
| Feb | 4.38 | 4.79 | 4.35 | 1.75 | 17.4 | 35 |
| Mar | 5.60 | 6.01 | 4.94 | 2.17 | 23.8 | 32 |
| Apr | 6.57 | 6.96 | 5.09 | 2.59 | 30.5 | 25 |
| May | 6.93 | 7.23 | 4.59 | 3.05 | 35.9 | 20 |
| Jun | 6.52 | 6.95 | 3.58 | 3.31 | 38.2 | 28 |
| Jul | 6.11 | 6.53 | 3.04 | 3.21 | 37.6 | 38 |
| Aug | 5.98 | 6.42 | 3.65 | 2.82 | 35.9 | 41 |
| Sep | 5.72 | 5.94 | 4.58 | 2.28 | 33.3 | 38 |
| Oct | 4.87 | 4.95 | 4.57 | 1.88 | 28.3 | 26 |
| Nov | 3.70 | 3.84 | 3.81 | 1.57 | 21.5 | 27 |
| Dec | 3.18 | 3.43 | 3.58 | 1.38 | 15.9 | 32 |
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 3.18 kWh/m²/day, 0.77 system efficiency.
About solar in Bahawalpur
Bahawalpur, Pakistan has a dry climate with long hours of direct sunshine and low humidity. Its annual peak sun hours average 5.24 kWh/m²/day, a excellent solar resource by global standards.
The strongest month in Bahawalpur is May (spring) at 6.93 kWh/m²/day, and the weakest is December (winter) at 3.18 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.
Bahawalpur'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 Bahawalpur?
- Bahawalpur averages 5.24 peak sun hours per day annually, ranging from 3.18 in December to 6.93 in May.
- How many solar panels do I need in Bahawalpur?
- Panel count depends on your daily load. At Bahawalpur's annual average of 5.24 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 Bahawalpur?
- Sizing against Bahawalpur's worst month (December, 3.18 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 Bahawalpur's solar resource compare globally?
- Bahawalpur sits in solar zone 4 out of 5 (where 5 is strongest) at 5.24 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 often should I clean solar panels in Bahawalpur?
- Arid climates can drop output 10–20% between cleanings. Quarterly cleaning is typical for Bahawalpur; monthly during dust-storm seasons. Dew alone isn't enough when rainfall is infrequent.
- Does extreme heat hurt solar output in Bahawalpur?
- Yes. Panel efficiency drops ~0.4% per °C above 25 °C cell temperature. In Bahawalpur, midday cell temperatures of 55–70 °C can derate output 12–18% below nameplate.
- Is Bahawalpur's solar resource as strong as the numbers suggest?
- Bahawalpur's 5.24 kWh/m²/day is excellent globally. But heat derating and dust accumulation mean real-world yields typically land 10–15% below this headline figure — factor that into sizing.