Location data · Thuringia
Sun hours in Altenburg
How sunny is Altenburg? Over a year the sun delivers 1,338 kilowatt-hours onto every square metre here — in June roughly 4 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 3.67 peak sun hours per day in Altenburg. In 9 out of 10 years at least 1,251 kWh/m² are reached. All values are computed from this location’s satellite hourly data, not estimated.
- Annual average (PSH)
- 3.67 kWh/m²/d
- P90 annual total
- 1,251 kWh/m²
- Optimal tilt
- 40°
- Terrain horizon max.
- 1.5°
Sun hours per month
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PSH/day (35° south) | 1.28 | 2.22 | 3.42 | 4.97 | 5.39 | 5.65 | 5.54 | 5.06 | 4.29 | 3.00 | 1.81 | 1.32 |
| P90 | 0.93 | 1.45 | 2.55 | 3.99 | 4.52 | 5.03 | 4.89 | 4.30 | 3.49 | 2.49 | 1.33 | 0.92 |
Daily average per month in kWh/m² at 35° tilt, south-facing, including the terrain horizon of Altenburg. P90 = reached in 9 out of 10 years.
Optimal tilt angle in Altenburg
The annual optimum for Altenburg 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 25°. Flat-laid modules lose 17.3 % versus the optimum. Adjusting twice a year would add 3.0 % here, monthly adjustment 3.9 % — only relevant for adjustable mounts.
Is a balcony solar kit worth it in Altenburg?
A vertical south-facing railing in Altenburg harvests 971 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 118 % 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
- Zeitz3.73 kWh/m²/d22 km
- Limbach-Oberfrohna3.54 kWh/m²/d27 km
- Gera3.60 kWh/m²/d28 km