Location data · Lower Saxony
Sun hours in Helmstedt
How sunny is Helmstedt? Over a year the sun delivers 1,297 kilowatt-hours onto every square metre here — in June roughly 5 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 3.55 peak sun hours per day in Helmstedt. In 9 out of 10 years at least 1,195 kWh/m² are reached. All values are computed from this location’s satellite hourly data, not estimated.
- Annual average (PSH)
- 3.55 kWh/m²/d
- P90 annual total
- 1,195 kWh/m²
- Optimal tilt
- 40°
- Terrain horizon max.
- 2.7°
Sun hours per month
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PSH/day (35° south) | 1.15 | 2.13 | 3.43 | 4.97 | 5.29 | 5.69 | 5.42 | 4.95 | 4.18 | 2.80 | 1.53 | 1.05 |
| P90 | 0.97 | 1.58 | 2.65 | 4.17 | 4.61 | 5.17 | 4.71 | 4.29 | 3.57 | 2.06 | 1.15 | 0.85 |
Daily average per month in kWh/m² at 35° tilt, south-facing, including the terrain horizon of Helmstedt. P90 = reached in 9 out of 10 years.
Optimal tilt angle in Helmstedt
The annual optimum for Helmstedt is 40° south; anything between 26° and 52° counts as equivalent (below 2% difference). For winter operation (off-grid) 65° is optimal, for summer use 20°. Flat-laid modules lose 16.4 % 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 Helmstedt?
A vertical south-facing railing in Helmstedt harvests 947 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 113 % 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
- Wolfsburg3.54 kWh/m²/d27 km
- Haldensleben3.72 kWh/m²/d28 km
- Braunschweig3.56 kWh/m²/d33 km