Location data · Baden-Württemberg
Sun hours in Wiesloch
How sunny is Wiesloch? Over a year the sun delivers 1,419 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 3.89 peak sun hours per day in Wiesloch. In 9 out of 10 years at least 1,326 kWh/m² are reached. All values are computed from this location’s satellite hourly data, not estimated.
- Annual average (PSH)
- 3.89 kWh/m²/d
- P90 annual total
- 1,326 kWh/m²
- Optimal tilt
- 35°
- Terrain horizon max.
- 5.7°
Sun hours per month
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PSH/day (35° south) | 1.45 | 2.50 | 3.87 | 5.29 | 5.46 | 5.94 | 5.81 | 5.38 | 4.70 | 3.07 | 1.79 | 1.31 |
| P90 | 1.17 | 1.70 | 2.99 | 4.32 | 4.60 | 5.19 | 5.05 | 4.74 | 4.09 | 2.49 | 1.32 | 0.92 |
Daily average per month in kWh/m² at 35° tilt, south-facing, including the terrain horizon of Wiesloch. P90 = reached in 9 out of 10 years.
Optimal tilt angle in Wiesloch
The annual optimum for Wiesloch is 35° south; anything between 24° and 51° counts as equivalent (below 2% difference). For winter operation (off-grid) 65° is optimal, for summer use 20°. Flat-laid modules lose 15.2 % versus the optimum. Adjusting twice a year would add 3.0 % here, monthly adjustment 3.6 % — only relevant for adjustable mounts.
Is a balcony solar kit worth it in Wiesloch?
A vertical south-facing railing in Wiesloch harvests 1,002 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 106 % 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
- Heidelberg3.52 kWh/m²/d13 km
- Sinsheim3.94 kWh/m²/d14 km
- Speyer3.88 kWh/m²/d20 km