Location data · Saarland
Sun hours in Saarbrücken
How sunny is Saarbrücken? Over a year the sun delivers 1,347 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 3.69 peak sun hours per day in Saarbrücken. In 9 out of 10 years at least 1,232 kWh/m² are reached. All values are computed from this location’s satellite hourly data, not estimated.
- Annual average (PSH)
- 3.69 kWh/m²/d
- P90 annual total
- 1,232 kWh/m²
- Optimal tilt
- 35°
- Terrain horizon max.
- 11.1°
Sun hours per month
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PSH/day (35° south) | 1.34 | 2.33 | 3.74 | 5.05 | 5.20 | 5.71 | 5.68 | 5.11 | 4.53 | 2.88 | 1.53 | 1.12 |
| P90 | 1.02 | 1.74 | 2.78 | 4.05 | 4.31 | 4.94 | 5.00 | 4.27 | 3.98 | 2.39 | 1.27 | 0.79 |
Daily average per month in kWh/m² at 35° tilt, south-facing, including the terrain horizon of Saarbrücken. P90 = reached in 9 out of 10 years.
Optimal tilt angle in Saarbrücken
The annual optimum for Saarbrücken is 35° south; anything between 23° and 49° counts as equivalent (below 2% difference). For winter operation (off-grid) 60° is optimal, for summer use 20°. Flat-laid modules lose 14.0 % versus the optimum. Adjusting twice a year would add 2.3 % here, monthly adjustment 3.1 % — only relevant for adjustable mounts.
Is a balcony solar kit worth it in Saarbrücken?
A vertical south-facing railing in Saarbrücken harvests 938 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 98 % 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
- Völklingen3.71 kWh/m²/d11 km
- Neunkirchen3.79 kWh/m²/d18 km
- Sankt Wendel3.71 kWh/m²/d28 km