Location data · North Rhine-Westphalia
Sun hours in Hagen
How sunny is Hagen? Over a year the sun delivers 1,215 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 3.33 peak sun hours per day in Hagen. In 9 out of 10 years at least 1,146 kWh/m² are reached. All values are computed from this location’s satellite hourly data, not estimated.
- Annual average (PSH)
- 3.33 kWh/m²/d
- P90 annual total
- 1,146 kWh/m²
- Optimal tilt
- 35°
- Terrain horizon max.
- 5.3°
Sun hours per month
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PSH/day (35° south) | 1.11 | 2.05 | 3.38 | 4.63 | 4.86 | 5.21 | 4.98 | 4.62 | 3.93 | 2.61 | 1.52 | 0.98 |
| P90 | 0.79 | 1.49 | 2.54 | 3.80 | 4.10 | 4.32 | 4.38 | 3.92 | 3.39 | 2.07 | 1.12 | 0.71 |
Daily average per month in kWh/m² at 35° tilt, south-facing, including the terrain horizon of Hagen. P90 = reached in 9 out of 10 years.
Optimal tilt angle in Hagen
The annual optimum for Hagen is 35° south; anything between 23° and 50° counts as equivalent (below 2% difference). For winter operation (off-grid) 60° is optimal, for summer use 20°. Flat-laid modules lose 13.9 % versus the optimum. Adjusting twice a year would add 2.8 % here, monthly adjustment 3.7 % — only relevant for adjustable mounts.
Is a balcony solar kit worth it in Hagen?
A vertical south-facing railing in Hagen harvests 867 kWh/m² per year — 71 % 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 105 % 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
- Iserlohn3.47 kWh/m²/d16 km
- Dortmund3.48 kWh/m²/d17 km
- Lüdenscheid2.70 kWh/m²/d19 km