Peak Sun Hours in Qina, Qena, Egypt
- Solar zone
- Zone 5 (exceptional)
- Best month
- June (8.2)
- Worst month
- December (4.1)
- Climate
- Arid · 24.6°C
Monthly solar breakdown
| Month | GHI | Clear-sky | DNI | DHI | Temp °C | Humid % |
|---|---|---|---|---|---|---|
| Jan | 4.39 | 4.63 | 5.49 | 1.49 | 13.5 | 45 |
| Feb | 5.34 | 5.57 | 5.73 | 1.82 | 16.2 | 36 |
| Mar | 6.48 | 6.72 | 6.22 | 2.13 | 20.4 | 27 |
| Apr | 7.36 | 7.63 | 6.16 | 2.58 | 25.1 | 21 |
| May | 7.81 | 8.07 | 6.35 | 2.68 | 29.6 | 18 |
| Jun | 8.19 | 8.26 | 7.26 | 2.42 | 32.3 | 18 |
| Jul | 7.97 | 8.04 | 7.26 | 2.25 | 33.0 | 20 |
| Aug | 7.50 | 7.56 | 6.95 | 2.15 | 32.9 | 21 |
| Sep | 6.76 | 6.82 | 6.67 | 1.95 | 30.4 | 25 |
| Oct | 5.62 | 5.72 | 5.99 | 1.75 | 26.7 | 31 |
| Nov | 4.68 | 4.79 | 6.04 | 1.37 | 20.4 | 40 |
| Dec | 4.11 | 4.29 | 5.47 | 1.36 | 15.4 | 46 |
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 4.11 kWh/m²/day, 0.77 system efficiency.
About solar in Qina
Qina, Egypt has a dry climate with long hours of direct sunshine and low humidity. Its annual peak sun hours average 6.35 kWh/m²/day, a exceptional solar resource by global standards.
The strongest month in Qina is June (summer) at 8.19 kWh/m²/day, and the weakest is December (winter) at 4.11 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.
Qina's exceptional solar resource means panels can be sized close to demand rather than heavily oversized, which keeps installation costs down.
FAQ
- What are the peak sun hours in Qina?
- Qina averages 6.35 peak sun hours per day annually, ranging from 4.11 in December to 8.19 in June.
- How many solar panels do I need in Qina?
- Panel count depends on your daily load. At Qina's annual average of 6.35 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 Qina?
- Sizing against Qina's worst month (December, 4.11 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 Qina's solar resource compare globally?
- Qina sits in solar zone 5 out of 5 (where 5 is strongest) at 6.35 kWh/m²/day — exceptional 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 Qina?
- Arid climates can drop output 10–20% between cleanings. Quarterly cleaning is typical for Qina; monthly during dust-storm seasons. Dew alone isn't enough when rainfall is infrequent.
- Does extreme heat hurt solar output in Qina?
- Yes. Panel efficiency drops ~0.4% per °C above 25 °C cell temperature. In Qina, midday cell temperatures of 55–70 °C can derate output 12–18% below nameplate.
- Is Qina's solar resource as strong as the numbers suggest?
- Qina's 6.35 kWh/m²/day is exceptional globally. But heat derating and dust accumulation mean real-world yields typically land 10–15% below this headline figure — factor that into sizing.