Location data · Baden-Württemberg
Sun hours in Konstanz
How sunny is Konstanz? Over a year the sun delivers 1,468 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 4.02 peak sun hours per day in Konstanz. In 9 out of 10 years at least 1,381 kWh/m² are reached. All values are computed from this location’s satellite hourly data, not estimated.
- Annual average (PSH)
- 4.02 kWh/m²/d
- P90 annual total
- 1,381 kWh/m²
- Optimal tilt
- 35°
- Terrain horizon max.
- 4.6°
Sun hours per month
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PSH/day (35° south) | 1.72 | 2.86 | 4.25 | 5.32 | 5.39 | 5.95 | 5.99 | 5.47 | 4.77 | 3.16 | 1.88 | 1.44 |
| P90 | 1.35 | 2.18 | 3.26 | 4.35 | 4.58 | 5.13 | 5.17 | 4.64 | 4.24 | 2.72 | 1.65 | 1.18 |
Daily average per month in kWh/m² at 35° tilt, south-facing, including the terrain horizon of Konstanz. P90 = reached in 9 out of 10 years.
Optimal tilt angle in Konstanz
The annual optimum for Konstanz 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 14.2 % versus the optimum. Adjusting twice a year would add 2.6 % here, monthly adjustment 3.4 % — only relevant for adjustable mounts.
Is a balcony solar kit worth it in Konstanz?
A vertical south-facing railing in Konstanz harvests 1,019 kWh/m² per year — 69 % 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 108 % 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
- Radolfzell am Bodensee3.95 kWh/m²/d18 km
- Friedrichshafen4.08 kWh/m²/d22 km
- Frauenfeld3.96 kWh/m²/d24 km