Location data · Hesse
Sun hours in Rüsselsheim am Main
How sunny is Rüsselsheim am Main? Over a year the sun delivers 1,384 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 3.79 peak sun hours per day in Rüsselsheim am Main. In 9 out of 10 years at least 1,300 kWh/m² are reached. All values are computed from this location’s satellite hourly data, not estimated.
- Annual average (PSH)
- 3.79 kWh/m²/d
- P90 annual total
- 1,300 kWh/m²
- Optimal tilt
- 35°
- Terrain horizon max.
- 1.5°
Sun hours per month
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PSH/day (35° south) | 1.40 | 2.46 | 3.86 | 5.25 | 5.46 | 5.85 | 5.69 | 5.20 | 4.59 | 2.93 | 1.62 | 1.13 |
| P90 | 1.13 | 1.83 | 3.06 | 4.47 | 4.57 | 5.06 | 5.11 | 4.56 | 3.93 | 2.35 | 1.23 | 0.85 |
Daily average per month in kWh/m² at 35° tilt, south-facing, including the terrain horizon of Rüsselsheim am Main. P90 = reached in 9 out of 10 years.
Optimal tilt angle in Rüsselsheim am Main
The annual optimum for Rüsselsheim am Main 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 14.7 % versus the optimum. Adjusting twice a year would add 2.7 % here, monthly adjustment 3.4 % — only relevant for adjustable mounts.
Is a balcony solar kit worth it in Rüsselsheim am Main?
A vertical south-facing railing in Rüsselsheim am Main harvests 979 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
- Wiesbaden3.83 kWh/m²/d17 km
- Darmstadt3.61 kWh/m²/d21 km
- Frankfurt am Main3.76 kWh/m²/d23 km