Peak Sun Hours in Pamplona, Navarre, Spain
- Solar zone
- Zone 3 (good)
- Best month
- July (7.0)
- Worst month
- December (1.6)
- Climate
- Temperate · 11.6°C
Monthly solar breakdown
| Month | GHI | Clear-sky | DNI | DHI | Temp °C | Humid % |
|---|---|---|---|---|---|---|
| Jan | 1.73 | 2.61 | 2.90 | 0.81 | 4.9 | 90 |
| Feb | 2.68 | 3.78 | 3.75 | 1.16 | 5.1 | 86 |
| Mar | 3.86 | 5.34 | 4.11 | 1.74 | 7.8 | 82 |
| Apr | 4.97 | 6.86 | 4.29 | 2.30 | 10.2 | 81 |
| May | 5.96 | 7.93 | 4.88 | 2.63 | 13.2 | 80 |
| Jun | 6.76 | 8.27 | 5.86 | 2.62 | 17.0 | 78 |
| Jul | 7.00 | 8.03 | 6.76 | 2.34 | 18.8 | 77 |
| Aug | 6.08 | 7.09 | 6.13 | 2.11 | 19.1 | 75 |
| Sep | 4.73 | 5.69 | 5.27 | 1.77 | 16.7 | 76 |
| Oct | 3.12 | 4.15 | 4.03 | 1.31 | 13.3 | 80 |
| Nov | 1.96 | 2.86 | 3.12 | 0.90 | 8.2 | 87 |
| Dec | 1.55 | 2.28 | 2.87 | 0.71 | 5.4 | 89 |
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 1.55 kWh/m²/day, 0.77 system efficiency.
About solar in Pamplona
Pamplona, Spain has a temperate climate with meaningful seasonal variation in solar resource. Its annual peak sun hours average 4.2 kWh/m²/day, a good solar resource by global standards.
The strongest month in Pamplona is July (summer) at 7 kWh/m²/day, and the weakest is December (winter) at 1.55 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.
Pamplona'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 Pamplona?
- Pamplona averages 4.2 peak sun hours per day annually, ranging from 1.55 in December to 7 in July.
- How many solar panels do I need in Pamplona?
- Panel count depends on your daily load. At Pamplona's annual average of 4.2 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 Pamplona?
- Sizing against Pamplona's worst month (December, 1.55 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 Pamplona's solar resource compare globally?
- Pamplona sits in solar zone 3 out of 5 (where 5 is strongest) at 4.2 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 Pamplona?
- Pamplona's worst month (December) delivers 1.55 kWh/m²/day — about 22% of the summer peak of 7. Off-grid systems here typically oversize 1.5–2× or pair with a backup source.
- Do cloudy days significantly affect Pamplona's solar?
- Partly. Diffuse light still produces 10–25% of clear-sky output. Pamplona's 4.2 kWh/m²/day already reflects average cloudiness, so no further derating is needed for sizing.
- What panel tilt works best in Pamplona?
- At Pamplona's latitude (43°), a fixed tilt near 43° balances year-round yield. Winter-heavy loads favor latitude + 15°; summer-heavy, latitude − 15°.