Location data · Thuringia
Sun hours in Gera
How sunny is Gera? Over a year the sun delivers 1,314 kilowatt-hours onto every square metre here — in June roughly 6 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 Gera. In 9 out of 10 years at least 1,233 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
- 1,233 kWh/m²
- Optimal tilt
- 35°
- Terrain horizon max.
- 12.6°
Sun hours per month
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PSH/day (35° south) | 1.07 | 2.24 | 3.54 | 4.95 | 5.37 | 5.62 | 5.53 | 5.03 | 4.29 | 2.95 | 1.64 | 0.92 |
| P90 | 0.74 | 1.60 | 2.54 | 4.00 | 4.50 | 4.86 | 4.96 | 4.38 | 3.53 | 2.32 | 1.20 | 0.73 |
Daily average per month in kWh/m² at 35° tilt, south-facing, including the terrain horizon of Gera. P90 = reached in 9 out of 10 years.
Optimal tilt angle in Gera
The annual optimum for Gera is 35° south; anything between 24° and 50° counts as equivalent (below 2% difference). For winter operation (off-grid) 65° is optimal, for summer use 20°. Flat-laid modules lose 15.0 % 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 Gera?
A vertical south-facing railing in Gera harvests 931 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 100 % of the 35° December value, computed from the same hourly data with its own plane transposition. Open the balcony solar calculator with these coordinates →