Location data · Lower Saxony
Sun hours in Bad Zwischenahn
How sunny is Bad Zwischenahn? Over a year the sun delivers 1,224 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 3.35 peak sun hours per day in Bad Zwischenahn. In 9 out of 10 years at least 1,165 kWh/m² are reached. All values are computed from this location’s satellite hourly data, not estimated.
- Annual average (PSH)
- 3.35 kWh/m²/d
- P90 annual total
- 1,165 kWh/m²
- Optimal tilt
- 40°
- Terrain horizon max.
- 1.9°
Sun hours per month
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PSH/day (35° south) | 1.02 | 1.97 | 3.28 | 4.86 | 5.13 | 5.33 | 5.14 | 4.73 | 3.87 | 2.58 | 1.35 | 0.90 |
| P90 | 0.84 | 1.42 | 2.66 | 4.06 | 4.30 | 4.78 | 4.64 | 4.16 | 3.24 | 2.15 | 1.08 | 0.63 |
Daily average per month in kWh/m² at 35° tilt, south-facing, including the terrain horizon of Bad Zwischenahn. P90 = reached in 9 out of 10 years.
Optimal tilt angle in Bad Zwischenahn
The annual optimum for Bad Zwischenahn is 40° 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 14.9 % versus the optimum. Adjusting twice a year would add 2.6 % here, monthly adjustment 3.5 % — only relevant for adjustable mounts.
Is a balcony solar kit worth it in Bad Zwischenahn?
A vertical south-facing railing in Bad Zwischenahn harvests 888 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 120 % 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
- Oldenburg3.42 kWh/m²/d15 km
- Friesoythe3.36 kWh/m²/d21 km
- Varel3.39 kWh/m²/d25 km