Location data · Neuchâtel
Sun hours in Neuenburg
How sunny is Neuenburg? Over a year the sun delivers 1,535 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 4.20 peak sun hours per day in Neuenburg. In 9 out of 10 years at least 1,440 kWh/m² are reached. All values are computed from this location’s satellite hourly data, not estimated.
- Annual average (PSH)
- 4.20 kWh/m²/d
- P90 annual total
- 1,440 kWh/m²
- Optimal tilt
- 40°
- Terrain horizon max.
- 9.2°
Sun hours per month
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PSH/day (35° south) | 2.07 | 3.17 | 4.45 | 5.40 | 5.39 | 6.06 | 6.11 | 5.62 | 5.07 | 3.46 | 2.07 | 1.53 |
| P90 | 1.67 | 2.33 | 3.42 | 4.34 | 4.53 | 5.34 | 5.48 | 4.95 | 4.47 | 2.89 | 1.61 | 1.29 |
Daily average per month in kWh/m² at 35° tilt, south-facing, including the terrain horizon of Neuenburg. P90 = reached in 9 out of 10 years.
Optimal tilt angle in Neuenburg
The annual optimum for Neuenburg is 40° south; anything between 25° and 51° counts as equivalent (below 2% difference). For winter operation (off-grid) 65° is optimal, for summer use 20°. Flat-laid modules lose 16.1 % versus the optimum. Adjusting twice a year would add 3.0 % here, monthly adjustment 3.8 % — only relevant for adjustable mounts.
Is a balcony solar kit worth it in Neuenburg?
A vertical south-facing railing in Neuenburg harvests 1,077 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 107 % 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
- La Chaux-de-Fonds4.23 kWh/m²/d14 km
- Freiburg4.09 kWh/m²/d27 km
- Biel4.06 kWh/m²/d29 km