Location data · North Rhine-Westphalia
Sun hours in Wuppertal
How sunny is Wuppertal? Over a year the sun delivers 1,231 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 3.37 peak sun hours per day in Wuppertal. In 9 out of 10 years at least 1,164 kWh/m² are reached. All values are computed from this location’s satellite hourly data, not estimated.
- Annual average (PSH)
- 3.37 kWh/m²/d
- P90 annual total
- 1,164 kWh/m²
- Optimal tilt
- 35°
- Terrain horizon max.
- 5.0°
Sun hours per month
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PSH/day (35° south) | 1.11 | 2.05 | 3.37 | 4.69 | 4.99 | 5.29 | 5.08 | 4.67 | 3.97 | 2.66 | 1.52 | 1.00 |
| P90 | 0.82 | 1.49 | 2.58 | 3.90 | 4.21 | 4.40 | 4.44 | 4.00 | 3.48 | 2.21 | 1.13 | 0.69 |
Daily average per month in kWh/m² at 35° tilt, south-facing, including the terrain horizon of Wuppertal. P90 = reached in 9 out of 10 years.
Optimal tilt angle in Wuppertal
The annual optimum for Wuppertal is 35° south; anything between 23° and 50° counts as equivalent (below 2% difference). For winter operation (off-grid) 65° is optimal, for summer use 20°. Flat-laid modules lose 14.2 % versus the optimum. Adjusting twice a year would add 2.5 % here, monthly adjustment 3.3 % — only relevant for adjustable mounts.
Is a balcony solar kit worth it in Wuppertal?
A vertical south-facing railing in Wuppertal harvests 878 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 120 % of the 35° December value, computed from the same hourly data with its own plane transposition. Open the balcony solar calculator with these coordinates →