Peak Sun Hours in Aix-en-Provence, Provence-Alpes-Côte d'Azur, France
- Solar zone
- Zone 3 (good)
- Best month
- July (7.4)
- Worst month
- December (1.6)
- Climate
- Temperate · 14.2°C
Monthly solar breakdown
| Month | GHI | Clear-sky | DNI | DHI | Temp °C | Humid % |
|---|---|---|---|---|---|---|
| Jan | 1.81 | 2.42 | 3.18 | 0.79 | 5.3 | 84 |
| Feb | 2.78 | 3.56 | 4.05 | 1.12 | 5.7 | 81 |
| Mar | 4.11 | 5.13 | 4.78 | 1.61 | 8.9 | 76 |
| Apr | 5.37 | 6.67 | 5.41 | 2.03 | 12.4 | 71 |
| May | 6.43 | 7.80 | 5.94 | 2.44 | 16.6 | 66 |
| Jun | 7.40 | 8.24 | 7.27 | 2.39 | 21.8 | 58 |
| Jul | 7.41 | 7.95 | 7.87 | 2.03 | 24.6 | 51 |
| Aug | 6.38 | 6.97 | 6.99 | 1.90 | 24.1 | 53 |
| Sep | 4.83 | 5.53 | 5.73 | 1.61 | 19.5 | 63 |
| Oct | 3.12 | 3.91 | 4.06 | 1.28 | 15.1 | 75 |
| Nov | 2.00 | 2.64 | 3.22 | 0.88 | 9.8 | 82 |
| Dec | 1.57 | 2.07 | 3.06 | 0.67 | 6.1 | 84 |
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 1.57 kWh/m²/day, 0.77 system efficiency.
About solar in Aix-en-Provence
Aix-en-Provence, France has a temperate climate with meaningful seasonal variation in solar resource. Its annual peak sun hours average 4.43 kWh/m²/day, a good solar resource by global standards.
The strongest month in Aix-en-Provence is July (summer) at 7.41 kWh/m²/day, and the weakest is December (winter) at 1.57 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.
Aix-en-Provence'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 Aix-en-Provence?
- Aix-en-Provence averages 4.43 peak sun hours per day annually, ranging from 1.57 in December to 7.41 in July.
- How many solar panels do I need in Aix-en-Provence?
- Panel count depends on your daily load. At Aix-en-Provence's annual average of 4.43 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 Aix-en-Provence?
- Sizing against Aix-en-Provence's worst month (December, 1.57 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 Aix-en-Provence's solar resource compare globally?
- Aix-en-Provence sits in solar zone 3 out of 5 (where 5 is strongest) at 4.43 kWh/m²/day — good 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 Aix-en-Provence?
- Aix-en-Provence's worst month (December) delivers 1.57 kWh/m²/day — about 21% of the summer peak of 7.41. Off-grid systems here typically oversize 1.5–2× or pair with a backup source.
- Do cloudy days significantly affect Aix-en-Provence's solar?
- Partly. Diffuse light still produces 10–25% of clear-sky output. Aix-en-Provence's 4.43 kWh/m²/day already reflects average cloudiness, so no further derating is needed for sizing.
- What panel tilt works best in Aix-en-Provence?
- At Aix-en-Provence's latitude (44°), a fixed tilt near 44° balances year-round yield. Winter-heavy loads favor latitude + 15°; summer-heavy, latitude − 15°.