Peak Sun Hours in Alexandria, Alexandria, Egypt
- Solar zone
- Zone 4 (excellent)
- Best month
- June (7.8)
- Worst month
- December (2.8)
- Climate
- Temperate · 21.4°C
Monthly solar breakdown
| Month | GHI | Clear-sky | DNI | DHI | Temp °C | Humid % |
|---|---|---|---|---|---|---|
| Jan | 3.02 | 3.76 | 3.51 | 1.38 | 13.9 | 68 |
| Feb | 3.89 | 4.73 | 3.86 | 1.73 | 14.6 | 66 |
| Mar | 5.30 | 5.99 | 4.95 | 2.06 | 16.7 | 63 |
| Apr | 6.49 | 7.07 | 5.52 | 2.44 | 19.4 | 60 |
| May | 7.29 | 7.72 | 6.31 | 2.48 | 23.1 | 58 |
| Jun | 7.84 | 8.00 | 7.58 | 2.17 | 26.1 | 60 |
| Jul | 7.67 | 7.78 | 7.58 | 2.05 | 27.8 | 62 |
| Aug | 7.00 | 7.14 | 6.87 | 2.03 | 28.2 | 63 |
| Sep | 6.05 | 6.24 | 6.28 | 1.84 | 26.7 | 62 |
| Oct | 4.65 | 5.04 | 5.09 | 1.67 | 23.8 | 64 |
| Nov | 3.39 | 3.97 | 4.02 | 1.43 | 19.9 | 65 |
| Dec | 2.75 | 3.43 | 3.37 | 1.26 | 16.0 | 68 |
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 2.75 kWh/m²/day, 0.77 system efficiency.
About solar in Alexandria
Alexandria, Egypt has a temperate climate with meaningful seasonal variation in solar resource. Its annual peak sun hours average 5.45 kWh/m²/day, a excellent solar resource by global standards.
The strongest month in Alexandria is June (summer) at 7.84 kWh/m²/day, and the weakest is December (winter) at 2.75 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.
Alexandria'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 Alexandria?
- Alexandria averages 5.45 peak sun hours per day annually, ranging from 2.75 in December to 7.84 in June.
- How many solar panels do I need in Alexandria?
- Panel count depends on your daily load. At Alexandria's annual average of 5.45 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 Alexandria?
- Sizing against Alexandria's worst month (December, 2.75 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 Alexandria's solar resource compare globally?
- Alexandria sits in solar zone 4 out of 5 (where 5 is strongest) at 5.45 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 much does winter reduce solar output in Alexandria?
- Alexandria's worst month (December) delivers 2.75 kWh/m²/day — about 35% of the summer peak of 7.84. Off-grid systems here typically oversize 1.5–2× or pair with a backup source.
- Do cloudy days significantly affect Alexandria's solar?
- Partly. Diffuse light still produces 10–25% of clear-sky output. Alexandria's 5.45 kWh/m²/day already reflects average cloudiness, so no further derating is needed for sizing.
- What panel tilt works best in Alexandria?
- At Alexandria's latitude (31°), a fixed tilt near 31° balances year-round yield. Winter-heavy loads favor latitude + 15°; summer-heavy, latitude − 15°.