Location data · Bavaria
Sun hours in Rosenheim
How sunny is Rosenheim? Over a year the sun delivers 1,315 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 3.60 peak sun hours per day in Rosenheim. In 9 out of 10 years at least 1,238 kWh/m² are reached. All values are computed from this location’s satellite hourly data, not estimated.
- Annual average (PSH)
- 3.60 kWh/m²/d
- P90 annual total
- 1,238 kWh/m²
- Optimal tilt
- 40°
- Terrain horizon max.
- 17.6°
Sun hours per month
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PSH/day (35° south) | 1.83 | 3.07 | 3.85 | 4.56 | 4.37 | 4.89 | 4.95 | 4.68 | 4.05 | 3.28 | 2.10 | 1.60 |
| P90 | 1.51 | 2.39 | 3.09 | 3.64 | 3.49 | 4.14 | 4.33 | 3.72 | 3.37 | 2.66 | 1.49 | 1.16 |
Daily average per month in kWh/m² at 35° tilt, south-facing, including the terrain horizon of Rosenheim. P90 = reached in 9 out of 10 years.
Optimal tilt angle in Rosenheim
The annual optimum for Rosenheim is 40° south; anything between 26° and 52° counts as equivalent (below 2% difference). For winter operation (off-grid) 65° is optimal, for summer use 20°. Flat-laid modules lose 17.1 % versus the optimum. Adjusting twice a year would add 3.9 % here, monthly adjustment 4.8 % — only relevant for adjustable mounts.
Is a balcony solar kit worth it in Rosenheim?
A vertical south-facing railing in Rosenheim harvests 961 kWh/m² per year — 73 % 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 111 % 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
- Traunreut3.98 kWh/m²/d37 km
- Vaterstetten3.88 kWh/m²/d38 km
- Waldkraiburg3.92 kWh/m²/d44 km