Location data · Hesse
Sun hours in Dillenburg
How sunny is Dillenburg? Over a year the sun delivers 1,276 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 3.50 peak sun hours per day in Dillenburg. In 9 out of 10 years at least 1,205 kWh/m² are reached. All values are computed from this location’s satellite hourly data, not estimated.
- Annual average (PSH)
- 3.50 kWh/m²/d
- P90 annual total
- 1,205 kWh/m²
- Optimal tilt
- 35°
- Terrain horizon max.
- 11.5°
Sun hours per month
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PSH/day (35° south) | 1.18 | 2.18 | 3.60 | 4.88 | 5.05 | 5.54 | 5.44 | 4.92 | 4.17 | 2.61 | 1.34 | 0.97 |
| P90 | 0.91 | 1.63 | 2.76 | 4.13 | 4.24 | 4.77 | 4.76 | 4.35 | 3.60 | 2.18 | 1.06 | 0.76 |
Daily average per month in kWh/m² at 35° tilt, south-facing, including the terrain horizon of Dillenburg. P90 = reached in 9 out of 10 years.
Optimal tilt angle in Dillenburg
The annual optimum for Dillenburg is 35° south; anything between 21° and 48° counts as equivalent (below 2% difference). For winter operation (off-grid) 60° is optimal, for summer use 20°. Flat-laid modules lose 12.5 % versus the optimum. Adjusting twice a year would add 2.1 % here, monthly adjustment 2.6 % — only relevant for adjustable mounts.
Is a balcony solar kit worth it in Dillenburg?
A vertical south-facing railing in Dillenburg harvests 881 kWh/m² per year — 69 % 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 106 % of the 35° December value, computed from the same hourly data with its own plane transposition. Open the balcony solar calculator with these coordinates →