Location data · Baden-Württemberg
Sun hours in Radolfzell am Bodensee
How sunny is Radolfzell am Bodensee? Over a year the sun delivers 1,440 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 3.95 peak sun hours per day in Radolfzell am Bodensee. In 9 out of 10 years at least 1,362 kWh/m² are reached. All values are computed from this location’s satellite hourly data, not estimated.
- Annual average (PSH)
- 3.95 kWh/m²/d
- P90 annual total
- 1,362 kWh/m²
- Optimal tilt
- 35°
- Terrain horizon max.
- 3.4°
Sun hours per month
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PSH/day (35° south) | 1.72 | 2.75 | 4.16 | 5.19 | 5.28 | 5.84 | 5.92 | 5.40 | 4.71 | 3.08 | 1.84 | 1.41 |
| P90 | 1.38 | 2.08 | 3.07 | 4.19 | 4.44 | 5.05 | 5.17 | 4.56 | 4.15 | 2.67 | 1.65 | 1.15 |
Daily average per month in kWh/m² at 35° tilt, south-facing, including the terrain horizon of Radolfzell am Bodensee. P90 = reached in 9 out of 10 years.
Optimal tilt angle in Radolfzell am Bodensee
The annual optimum for Radolfzell am Bodensee is 35° south; anything between 24° and 50° counts as equivalent (below 2% difference). For winter operation (off-grid) 60° is optimal, for summer use 20°. Flat-laid modules lose 15.0 % versus the optimum. Adjusting twice a year would add 2.5 % here, monthly adjustment 3.2 % — only relevant for adjustable mounts.
Is a balcony solar kit worth it in Radolfzell am Bodensee?
A vertical south-facing railing in Radolfzell am Bodensee harvests 1,004 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 103 % 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
- Singen4.05 kWh/m²/d10 km
- Konstanz4.02 kWh/m²/d18 km
- Frauenfeld3.96 kWh/m²/d21 km