Peak Sun Hours in Ismailia, Ismailia, Egypt
- Solar zone
- Zone 4 (excellent)
- Best month
- June (8.2)
- Worst month
- December (3.3)
- Climate
- Temperate · 21.2°C
Monthly solar breakdown
| Month | GHI | Clear-sky | DNI | DHI | Temp °C | Humid % |
|---|---|---|---|---|---|---|
| Jan | 3.53 | 4.04 | 4.15 | 1.51 | 12.4 | 62 |
| Feb | 4.35 | 5.05 | 4.21 | 1.90 | 13.8 | 59 |
| Mar | 5.71 | 6.35 | 5.04 | 2.30 | 16.7 | 56 |
| Apr | 6.80 | 7.46 | 5.27 | 2.77 | 20.1 | 52 |
| May | 7.65 | 8.09 | 6.12 | 2.81 | 24.1 | 48 |
| Jun | 8.22 | 8.39 | 7.54 | 2.40 | 27.0 | 50 |
| Jul | 8.04 | 8.17 | 7.65 | 2.20 | 28.9 | 50 |
| Aug | 7.44 | 7.57 | 7.26 | 2.08 | 28.9 | 53 |
| Sep | 6.41 | 6.60 | 6.48 | 1.94 | 26.6 | 58 |
| Oct | 5.04 | 5.34 | 5.45 | 1.75 | 23.4 | 62 |
| Nov | 3.87 | 4.24 | 4.68 | 1.49 | 18.8 | 62 |
| Dec | 3.30 | 3.69 | 4.28 | 1.33 | 14.3 | 63 |
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 3.30 kWh/m²/day, 0.77 system efficiency.
About solar in Ismailia
Ismailia, Egypt has a temperate climate with meaningful seasonal variation in solar resource. Its annual peak sun hours average 5.86 kWh/m²/day, a excellent solar resource by global standards.
The strongest month in Ismailia is June (summer) at 8.22 kWh/m²/day, and the weakest is December (winter) at 3.3 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.
Ismailia'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 Ismailia?
- Ismailia averages 5.86 peak sun hours per day annually, ranging from 3.3 in December to 8.22 in June.
- How many solar panels do I need in Ismailia?
- Panel count depends on your daily load. At Ismailia's annual average of 5.86 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 Ismailia?
- Sizing against Ismailia's worst month (December, 3.3 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 Ismailia's solar resource compare globally?
- Ismailia sits in solar zone 4 out of 5 (where 5 is strongest) at 5.86 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 Ismailia?
- Ismailia's worst month (December) delivers 3.3 kWh/m²/day — about 40% of the summer peak of 8.22. Off-grid systems here typically oversize 1.5–2× or pair with a backup source.
- Do cloudy days significantly affect Ismailia's solar?
- Partly. Diffuse light still produces 10–25% of clear-sky output. Ismailia's 5.86 kWh/m²/day already reflects average cloudiness, so no further derating is needed for sizing.
- What panel tilt works best in Ismailia?
- At Ismailia's latitude (31°), a fixed tilt near 31° balances year-round yield. Winter-heavy loads favor latitude + 15°; summer-heavy, latitude − 15°.