Location data · Baden-Württemberg
Sun hours in Pforzheim
How sunny is Pforzheim? Over a year the sun delivers 1,427 kilowatt-hours onto every square metre here — in June roughly 4 times as much per day as in December. “Sun hours” has two meanings: the weather report counts how long the sun shines. For solar power what matters is how much energy arrives — and that is what this page shows, as peak sun hours (hours of full sun power).
For solar planning this means: an optimally tilted, south-facing array (35°) harvests an annual average of 3.91 peak sun hours per day in Pforzheim. In 9 out of 10 years at least 1,334 kWh/m² are reached. All values are computed from this location’s satellite hourly data, not estimated.
- Annual average (PSH)
- 3.91 kWh/m²/d
- P90 annual total
- 1,334 kWh/m²
- Optimal tilt
- 40°
- Terrain horizon max.
- 6.5°
Sun hours per month
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PSH/day (35° south) | 1.64 | 2.60 | 3.98 | 5.17 | 5.25 | 5.81 | 5.82 | 5.34 | 4.68 | 3.17 | 1.95 | 1.45 |
| P90 | 1.27 | 1.82 | 3.22 | 4.14 | 4.54 | 5.01 | 5.06 | 4.61 | 4.11 | 2.58 | 1.53 | 0.97 |
Daily average per month in kWh/m² at 35° tilt, south-facing, including the terrain horizon of Pforzheim. P90 = reached in 9 out of 10 years.
Optimal tilt angle in Pforzheim
The annual optimum for Pforzheim is 40° south; anything between 25° and 51° counts as equivalent (below 2% difference). For winter operation (off-grid) 65° is optimal, for summer use 20°. Flat-laid modules lose 16.0 % versus the optimum. Adjusting twice a year would add 3.1 % here, monthly adjustment 4.0 % — only relevant for adjustable mounts.
Is a balcony solar kit worth it in Pforzheim?
A vertical south-facing railing in Pforzheim harvests 1,019 kWh/m² per year — 71 % of what an optimally tilted 35° panel yields at the same spot. December softens the penalty: with the low winter sun, the vertical plane reaches 117 % of the 35° December value, computed from the same hourly data with its own plane transposition. Open the balcony solar calculator with these coordinates →
Neighbouring places compared
- Calw3.87 kWh/m²/d19 km
- Karlsruhe3.92 kWh/m²/d26 km
- Rheinstetten3.93 kWh/m²/d30 km