Peak Sun Hours in Bahawalnagar, Punjab, Pakistan
- Solar zone
- Zone 4 (excellent)
- Best month
- May (6.9)
- Worst month
- December (3.1)
- Climate
- Arid · 27.3°C
Monthly solar breakdown
| Month | GHI | Clear-sky | DNI | DHI | Temp °C | Humid % |
|---|---|---|---|---|---|---|
| Jan | 3.20 | 3.65 | 3.16 | 1.50 | 13.8 | 38 |
| Feb | 4.39 | 4.77 | 4.31 | 1.77 | 17.2 | 37 |
| Mar | 5.65 | 6.01 | 5.01 | 2.13 | 23.6 | 32 |
| Apr | 6.57 | 6.97 | 5.08 | 2.59 | 30.2 | 25 |
| May | 6.86 | 7.19 | 4.35 | 3.09 | 35.7 | 21 |
| Jun | 6.35 | 6.89 | 3.21 | 3.30 | 37.7 | 29 |
| Jul | 5.93 | 6.57 | 2.86 | 3.16 | 36.9 | 40 |
| Aug | 5.87 | 6.51 | 3.59 | 2.79 | 35.3 | 44 |
| Sep | 5.64 | 5.96 | 4.54 | 2.24 | 32.5 | 41 |
| Oct | 4.77 | 4.85 | 4.26 | 1.91 | 28.0 | 28 |
| Nov | 3.61 | 3.73 | 3.51 | 1.60 | 21.4 | 28 |
| Dec | 3.10 | 3.34 | 3.35 | 1.39 | 15.8 | 33 |
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 3.10 kWh/m²/day, 0.77 system efficiency.
About solar in Bahawalnagar
Bahawalnagar, Pakistan has a dry climate with long hours of direct sunshine and low humidity. Its annual peak sun hours average 5.16 kWh/m²/day, a excellent solar resource by global standards.
The strongest month in Bahawalnagar is May (spring) at 6.86 kWh/m²/day, and the weakest is December (winter) at 3.1 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.
Bahawalnagar'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 Bahawalnagar?
- Bahawalnagar averages 5.16 peak sun hours per day annually, ranging from 3.1 in December to 6.86 in May.
- How many solar panels do I need in Bahawalnagar?
- Panel count depends on your daily load. At Bahawalnagar's annual average of 5.16 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 Bahawalnagar?
- Sizing against Bahawalnagar's worst month (December, 3.1 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 Bahawalnagar's solar resource compare globally?
- Bahawalnagar sits in solar zone 4 out of 5 (where 5 is strongest) at 5.16 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 Bahawalnagar?
- Arid climates can drop output 10–20% between cleanings. Quarterly cleaning is typical for Bahawalnagar; monthly during dust-storm seasons. Dew alone isn't enough when rainfall is infrequent.
- Does extreme heat hurt solar output in Bahawalnagar?
- Yes. Panel efficiency drops ~0.4% per °C above 25 °C cell temperature. In Bahawalnagar, midday cell temperatures of 55–70 °C can derate output 12–18% below nameplate.
- Is Bahawalnagar's solar resource as strong as the numbers suggest?
- Bahawalnagar's 5.16 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.