Location data · Bavaria
Sun hours in Unterhaching
How sunny is Unterhaching? Over a year the sun delivers 1,425 kilowatt-hours onto every square metre here — in June roughly 3 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 3.90 peak sun hours per day in Unterhaching. In 9 out of 10 years at least 1,318 kWh/m² are reached. All values are computed from this location’s satellite hourly data, not estimated.
- Annual average (PSH)
- 3.90 kWh/m²/d
- P90 annual total
- 1,318 kWh/m²
- Optimal tilt
- 40°
- Terrain horizon max.
- 3.1°
Sun hours per month
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PSH/day (35° south) | 1.83 | 3.00 | 3.97 | 4.98 | 4.92 | 5.51 | 5.56 | 5.24 | 4.47 | 3.39 | 2.17 | 1.76 |
| P90 | 1.42 | 2.23 | 3.18 | 3.87 | 3.91 | 4.64 | 4.81 | 4.46 | 3.73 | 2.74 | 1.69 | 1.25 |
Daily average per month in kWh/m² at 35° tilt, south-facing, including the terrain horizon of Unterhaching. P90 = reached in 9 out of 10 years.
Optimal tilt angle in Unterhaching
The annual optimum for Unterhaching is 40° south; anything between 25° and 52° counts as equivalent (below 2% difference). For winter operation (off-grid) 65° is optimal, for summer use 20°. Flat-laid modules lose 16.3 % versus the optimum. Adjusting twice a year would add 3.5 % here, monthly adjustment 4.5 % — only relevant for adjustable mounts.
Is a balcony solar kit worth it in Unterhaching?
A vertical south-facing railing in Unterhaching harvests 1,028 kWh/m² per year — 72 % 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
- München3.95 kWh/m²/d8 km
- Vaterstetten3.88 kWh/m²/d12 km
- Starnberg3.92 kWh/m²/d21 km