Location data · Rhineland-Palatinate
Sun hours in Pirmasens
How sunny is Pirmasens? Over a year the sun delivers 1,355 kilowatt-hours onto every square metre here — in June roughly 5 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 3.71 peak sun hours per day in Pirmasens. In 9 out of 10 years at least 1,241 kWh/m² are reached. All values are computed from this location’s satellite hourly data, not estimated.
- Annual average (PSH)
- 3.71 kWh/m²/d
- P90 annual total
- 1,241 kWh/m²
- Optimal tilt
- 35°
- Terrain horizon max.
- 13.0°
Sun hours per month
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PSH/day (35° south) | 1.32 | 2.29 | 3.73 | 5.11 | 5.29 | 5.74 | 5.68 | 5.18 | 4.50 | 2.93 | 1.56 | 1.14 |
| P90 | 0.98 | 1.63 | 2.85 | 4.10 | 4.44 | 5.18 | 5.03 | 4.51 | 3.77 | 2.35 | 1.28 | 0.74 |
Daily average per month in kWh/m² at 35° tilt, south-facing, including the terrain horizon of Pirmasens. P90 = reached in 9 out of 10 years.
Optimal tilt angle in Pirmasens
The annual optimum for Pirmasens is 35° south; anything between 23° and 49° counts as equivalent (below 2% difference). For winter operation (off-grid) 65° is optimal, for summer use 20°. Flat-laid modules lose 14.0 % versus the optimum. Adjusting twice a year would add 2.8 % here, monthly adjustment 3.5 % — only relevant for adjustable mounts.
Is a balcony solar kit worth it in Pirmasens?
A vertical south-facing railing in Pirmasens harvests 944 kWh/m² per year — 70 % 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 102 % 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
- Kaiserslautern3.68 kWh/m²/d29 km
- Neunkirchen3.79 kWh/m²/d35 km
- Landau in der Pfalz3.74 kWh/m²/d37 km