Location data · Baden-Württemberg
Sun hours in Offenburg
How sunny is Offenburg? Over a year the sun delivers 1,359 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 3.72 peak sun hours per day in Offenburg. In 9 out of 10 years at least 1,245 kWh/m² are reached. All values are computed from this location’s satellite hourly data, not estimated.
- Annual average (PSH)
- 3.72 kWh/m²/d
- P90 annual total
- 1,245 kWh/m²
- Optimal tilt
- 35°
- Terrain horizon max.
- 11.5°
Sun hours per month
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PSH/day (35° south) | 1.53 | 2.52 | 3.80 | 4.83 | 4.96 | 5.58 | 5.54 | 5.10 | 4.54 | 3.09 | 1.80 | 1.35 |
| P90 | 1.13 | 1.73 | 2.70 | 3.77 | 3.98 | 4.78 | 4.63 | 4.41 | 3.87 | 2.43 | 1.31 | 0.84 |
Daily average per month in kWh/m² at 35° tilt, south-facing, including the terrain horizon of Offenburg. P90 = reached in 9 out of 10 years.
Optimal tilt angle in Offenburg
The annual optimum for Offenburg is 35° south; anything between 24° and 51° counts as equivalent (below 2% difference). For winter operation (off-grid) 65° is optimal, for summer use 20°. Flat-laid modules lose 15.4 % versus the optimum. Adjusting twice a year would add 2.7 % here, monthly adjustment 3.6 % — only relevant for adjustable mounts.
Is a balcony solar kit worth it in Offenburg?
A vertical south-facing railing in Offenburg harvests 956 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
- Kehl3.98 kWh/m²/d15 km
- Lahr/Schwarzwald3.99 kWh/m²/d16 km
- Achern3.95 kWh/m²/d20 km