Location data · Baden-Württemberg
Sun hours in Bad Mergentheim
How sunny is Bad Mergentheim? Over a year the sun delivers 1,369 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 3.75 peak sun hours per day in Bad Mergentheim. In 9 out of 10 years at least 1,276 kWh/m² are reached. All values are computed from this location’s satellite hourly data, not estimated.
- Annual average (PSH)
- 3.75 kWh/m²/d
- P90 annual total
- 1,276 kWh/m²
- Optimal tilt
- 35°
- Terrain horizon max.
- 11.5°
Sun hours per month
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PSH/day (35° south) | 1.26 | 2.36 | 3.70 | 5.11 | 5.32 | 5.80 | 5.72 | 5.24 | 4.57 | 2.95 | 1.70 | 1.19 |
| P90 | 1.03 | 1.58 | 2.85 | 4.16 | 4.44 | 5.01 | 5.13 | 4.66 | 3.91 | 2.45 | 1.32 | 0.86 |
Daily average per month in kWh/m² at 35° tilt, south-facing, including the terrain horizon of Bad Mergentheim. P90 = reached in 9 out of 10 years.
Optimal tilt angle in Bad Mergentheim
The annual optimum for Bad Mergentheim is 35° south; anything between 22° and 48° counts as equivalent (below 2% difference). For winter operation (off-grid) 60° is optimal, for summer use 20°. Flat-laid modules lose 13.5 % 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 Bad Mergentheim?
A vertical south-facing railing in Bad Mergentheim harvests 949 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 107 % of the 35° December value, computed from the same hourly data with its own plane transposition. Open the balcony solar calculator with these coordinates →