Location data · Hesse
Sun hours in Gelnhausen
How sunny is Gelnhausen? Over a year the sun delivers 1,304 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 3.57 peak sun hours per day in Gelnhausen. In 9 out of 10 years at least 1,217 kWh/m² are reached. All values are computed from this location’s satellite hourly data, not estimated.
- Annual average (PSH)
- 3.57 kWh/m²/d
- P90 annual total
- 1,217 kWh/m²
- Optimal tilt
- 35°
- Terrain horizon max.
- 3.8°
Sun hours per month
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PSH/day (35° south) | 1.25 | 2.28 | 3.55 | 4.92 | 5.11 | 5.53 | 5.52 | 4.99 | 4.31 | 2.77 | 1.51 | 1.06 |
| P90 | 0.86 | 1.69 | 2.65 | 4.11 | 4.27 | 4.70 | 4.86 | 4.32 | 3.54 | 2.19 | 1.05 | 0.74 |
Daily average per month in kWh/m² at 35° tilt, south-facing, including the terrain horizon of Gelnhausen. P90 = reached in 9 out of 10 years.
Optimal tilt angle in Gelnhausen
The annual optimum for Gelnhausen 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 14.7 % versus the optimum. Adjusting twice a year would add 2.7 % here, monthly adjustment 3.7 % — only relevant for adjustable mounts.
Is a balcony solar kit worth it in Gelnhausen?
A vertical south-facing railing in Gelnhausen harvests 929 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 115 % 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
- Hanau3.73 kWh/m²/d21 km
- Aschaffenburg3.51 kWh/m²/d25 km
- Maintal3.79 kWh/m²/d26 km