Location data · North Rhine-Westphalia
Sun hours in Gummersbach
How sunny is Gummersbach? Over a year the sun delivers 1,198 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 3.28 peak sun hours per day in Gummersbach. In 9 out of 10 years at least 1,127 kWh/m² are reached. All values are computed from this location’s satellite hourly data, not estimated.
- Annual average (PSH)
- 3.28 kWh/m²/d
- P90 annual total
- 1,127 kWh/m²
- Optimal tilt
- 35°
- Terrain horizon max.
- 23.3°
Sun hours per month
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PSH/day (35° south) | 0.99 | 1.82 | 3.23 | 4.63 | 4.94 | 5.34 | 5.13 | 4.70 | 3.88 | 2.38 | 1.35 | 0.95 |
| P90 | 0.77 | 1.40 | 2.50 | 3.82 | 4.20 | 4.46 | 4.44 | 4.04 | 3.31 | 1.90 | 1.02 | 0.74 |
Daily average per month in kWh/m² at 35° tilt, south-facing, including the terrain horizon of Gummersbach. P90 = reached in 9 out of 10 years.
Optimal tilt angle in Gummersbach
The annual optimum for Gummersbach is 35° south; anything between 24° and 50° counts as equivalent (below 2% difference). For winter operation (off-grid) 65° is optimal, for summer use 20°. Flat-laid modules lose 14.8 % versus the optimum. Adjusting twice a year would add 2.4 % here, monthly adjustment 3.3 % — only relevant for adjustable mounts.
Is a balcony solar kit worth it in Gummersbach?
A vertical south-facing railing in Gummersbach harvests 849 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 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
- Olpe3.39 kWh/m²/d20 km
- Lüdenscheid2.70 kWh/m²/d22 km
- Kreuztal3.33 kWh/m²/d30 km