Location data · Lower Saxony
Sun hours in Achim
How sunny is Achim? Over a year the sun delivers 1,262 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 3.46 peak sun hours per day in Achim. In 9 out of 10 years at least 1,199 kWh/m² are reached. All values are computed from this location’s satellite hourly data, not estimated.
- Annual average (PSH)
- 3.46 kWh/m²/d
- P90 annual total
- 1,199 kWh/m²
- Optimal tilt
- 40°
- Terrain horizon max.
- 0.8°
Sun hours per month
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PSH/day (35° south) | 1.06 | 2.06 | 3.38 | 4.99 | 5.27 | 5.54 | 5.28 | 4.82 | 4.06 | 2.63 | 1.42 | 0.92 |
| P90 | 0.80 | 1.52 | 2.77 | 4.23 | 4.45 | 5.12 | 4.69 | 4.22 | 3.48 | 2.07 | 1.06 | 0.71 |
Daily average per month in kWh/m² at 35° tilt, south-facing, including the terrain horizon of Achim. P90 = reached in 9 out of 10 years.
Optimal tilt angle in Achim
The annual optimum for Achim is 40° south; anything between 25° and 52° counts as equivalent (below 2% difference). For winter operation (off-grid) 65° is optimal, for summer use 20°. Flat-laid modules lose 15.8 % versus the optimum. Adjusting twice a year would add 2.9 % here, monthly adjustment 3.8 % — only relevant for adjustable mounts.
Is a balcony solar kit worth it in Achim?
A vertical south-facing railing in Achim harvests 921 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 119 % 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
- Bremen3.45 kWh/m²/d16 km
- Verden3.39 kWh/m²/d17 km
- Rotenburg an der Wümme3.38 kWh/m²/d27 km