Location data · Rhineland-Palatinate
Sun hours in Worms
How sunny is Worms? Over a year the sun delivers 1,419 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 3.89 peak sun hours per day in Worms. In 9 out of 10 years at least 1,312 kWh/m² are reached. All values are computed from this location’s satellite hourly data, not estimated.
- Annual average (PSH)
- 3.89 kWh/m²/d
- P90 annual total
- 1,312 kWh/m²
- Optimal tilt
- 35°
- Terrain horizon max.
- 2.3°
Sun hours per month
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PSH/day (35° south) | 1.48 | 2.56 | 4.05 | 5.40 | 5.53 | 5.94 | 5.78 | 5.29 | 4.70 | 3.01 | 1.67 | 1.20 |
| P90 | 1.21 | 1.85 | 3.21 | 4.58 | 4.74 | 4.96 | 5.26 | 4.52 | 4.08 | 2.40 | 1.33 | 0.88 |
Daily average per month in kWh/m² at 35° tilt, south-facing, including the terrain horizon of Worms. P90 = reached in 9 out of 10 years.
Optimal tilt angle in Worms
The annual optimum for Worms 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 14.4 % versus the optimum. Adjusting twice a year would add 2.5 % here, monthly adjustment 3.2 % — only relevant for adjustable mounts.
Is a balcony solar kit worth it in Worms?
A vertical south-facing railing in Worms harvests 997 kWh/m² per year — 70 % 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
- Frankenthal3.91 kWh/m²/d11 km
- Mannheim3.85 kWh/m²/d18 km
- Bensheim3.77 kWh/m²/d19 km