Location data · Lower Saxony
Sun hours in Nienburg/Weser
How sunny is Nienburg/Weser? Over a year the sun delivers 1,249 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 3.42 peak sun hours per day in Nienburg/Weser. In 9 out of 10 years at least 1,181 kWh/m² are reached. All values are computed from this location’s satellite hourly data, not estimated.
- Annual average (PSH)
- 3.42 kWh/m²/d
- P90 annual total
- 1,181 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) | 1.07 | 2.06 | 3.31 | 4.91 | 5.16 | 5.46 | 5.18 | 4.77 | 4.03 | 2.62 | 1.44 | 0.97 |
| P90 | 0.82 | 1.54 | 2.67 | 4.09 | 4.46 | 5.01 | 4.64 | 4.23 | 3.42 | 1.90 | 1.13 | 0.75 |
Daily average per month in kWh/m² at 35° tilt, south-facing, including the terrain horizon of Nienburg/Weser. P90 = reached in 9 out of 10 years.
Optimal tilt angle in Nienburg/Weser
The annual optimum for Nienburg/Weser is 40° south; anything between 26° and 53° counts as equivalent (below 2% difference). For winter operation (off-grid) 65° is optimal, for summer use 25°. Flat-laid modules lose 17.1 % versus the optimum. Adjusting twice a year would add 2.7 % here, monthly adjustment 3.4 % — only relevant for adjustable mounts.
Is a balcony solar kit worth it in Nienburg/Weser?
A vertical south-facing railing in Nienburg/Weser harvests 912 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 115 % 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
- Verden3.39 kWh/m²/d31 km
- Petershagen3.50 kWh/m²/d34 km
- Walsrode3.46 kWh/m²/d35 km