Peak Sun Hours in Jerez de la Frontera, Andalusia, Spain
- Solar zone
- Zone 4 (excellent)
- Best month
- July (7.8)
- Worst month
- December (2.4)
- Climate
- Temperate · 18.3°C
Monthly solar breakdown
| Month | GHI | Clear-sky | DNI | DHI | Temp °C | Humid % |
|---|---|---|---|---|---|---|
| Jan | 2.72 | 3.34 | 4.44 | 0.99 | 12.6 | 81 |
| Feb | 3.66 | 4.40 | 4.93 | 1.32 | 12.8 | 79 |
| Mar | 4.83 | 5.82 | 5.31 | 1.80 | 14.3 | 78 |
| Apr | 6.11 | 7.14 | 5.99 | 2.17 | 16.1 | 76 |
| May | 7.20 | 8.02 | 7.05 | 2.29 | 18.9 | 71 |
| Jun | 7.78 | 8.34 | 7.82 | 2.21 | 22.2 | 67 |
| Jul | 7.82 | 8.14 | 8.20 | 1.97 | 24.6 | 63 |
| Aug | 6.96 | 7.31 | 7.42 | 1.87 | 25.2 | 65 |
| Sep | 5.50 | 6.07 | 5.96 | 1.80 | 23.0 | 71 |
| Oct | 4.02 | 4.72 | 5.00 | 1.44 | 20.2 | 76 |
| Nov | 2.90 | 3.55 | 4.40 | 1.07 | 16.0 | 78 |
| Dec | 2.41 | 2.98 | 4.11 | 0.90 | 13.7 | 81 |
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 2.41 kWh/m²/day, 0.77 system efficiency.
About solar in Jerez de la Frontera
Jerez de la Frontera, Spain has a temperate climate with meaningful seasonal variation in solar resource. Its annual peak sun hours average 5.16 kWh/m²/day, a excellent solar resource by global standards.
The strongest month in Jerez de la Frontera is July (summer) at 7.82 kWh/m²/day, and the weakest is December (winter) at 2.41 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.
Jerez de la Frontera'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 Jerez de la Frontera?
- Jerez de la Frontera averages 5.16 peak sun hours per day annually, ranging from 2.41 in December to 7.82 in July.
- How many solar panels do I need in Jerez de la Frontera?
- Panel count depends on your daily load. At Jerez de la Frontera'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 Jerez de la Frontera?
- Sizing against Jerez de la Frontera's worst month (December, 2.41 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 Jerez de la Frontera's solar resource compare globally?
- Jerez de la Frontera 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 much does winter reduce solar output in Jerez de la Frontera?
- Jerez de la Frontera's worst month (December) delivers 2.41 kWh/m²/day — about 31% of the summer peak of 7.82. Off-grid systems here typically oversize 1.5–2× or pair with a backup source.
- Do cloudy days significantly affect Jerez de la Frontera's solar?
- Partly. Diffuse light still produces 10–25% of clear-sky output. Jerez de la Frontera's 5.16 kWh/m²/day already reflects average cloudiness, so no further derating is needed for sizing.
- What panel tilt works best in Jerez de la Frontera?
- At Jerez de la Frontera's latitude (37°), a fixed tilt near 37° balances year-round yield. Winter-heavy loads favor latitude + 15°; summer-heavy, latitude − 15°.