Location data · Hesse
Sun hours in Wiesbaden
How sunny is Wiesbaden? Over a year the sun delivers 1,396 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 3.83 peak sun hours per day in Wiesbaden. In 9 out of 10 years at least 1,304 kWh/m² are reached. All values are computed from this location’s satellite hourly data, not estimated.
- Annual average (PSH)
- 3.83 kWh/m²/d
- P90 annual total
- 1,304 kWh/m²
- Optimal tilt
- 35°
- Terrain horizon max.
- 1.9°
Sun hours per month
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PSH/day (35° south) | 1.44 | 2.49 | 3.96 | 5.33 | 5.49 | 5.86 | 5.74 | 5.22 | 4.60 | 2.93 | 1.63 | 1.17 |
| P90 | 1.14 | 1.86 | 3.07 | 4.58 | 4.72 | 5.09 | 5.21 | 4.61 | 4.00 | 2.36 | 1.28 | 0.90 |
Daily average per month in kWh/m² at 35° tilt, south-facing, including the terrain horizon of Wiesbaden. P90 = reached in 9 out of 10 years.
Optimal tilt angle in Wiesbaden
The annual optimum for Wiesbaden is 35° south; anything between 23° and 50° counts as equivalent (below 2% difference). For winter operation (off-grid) 65° is optimal, for summer use 20°. Flat-laid modules lose 14.3 % versus the optimum. Adjusting twice a year would add 2.6 % here, monthly adjustment 3.3 % — only relevant for adjustable mounts.
Is a balcony solar kit worth it in Wiesbaden?
A vertical south-facing railing in Wiesbaden harvests 983 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 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
- Taunusstein3.61 kWh/m²/d10 km
- Rüsselsheim am Main3.79 kWh/m²/d17 km
- Bingen am Rhein3.80 kWh/m²/d28 km