Location data · Carinthia
Sun hours in Villach
How sunny is Villach? Over a year the sun delivers 1,382 kilowatt-hours onto every square metre here — in June roughly 2 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 Villach. In 9 out of 10 years at least 1,242 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
- 1,242 kWh/m²
- Optimal tilt
- 35°
- Terrain horizon max.
- 28.3°
Sun hours per month
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PSH/day (35° south) | 2.43 | 3.34 | 4.20 | 4.45 | 4.48 | 4.95 | 5.28 | 4.90 | 4.12 | 3.28 | 1.94 | 2.05 |
| P90 | 1.80 | 2.56 | 3.47 | 3.69 | 3.49 | 3.95 | 4.70 | 4.23 | 3.35 | 2.66 | 1.20 | 1.44 |
Daily average per month in kWh/m² at 35° tilt, south-facing, including the terrain horizon of Villach. P90 = reached in 9 out of 10 years.
Optimal tilt angle in Villach
The annual optimum for Villach is 35° south; anything between 24° and 51° counts as equivalent (below 2% difference). For winter operation (off-grid) 65° is optimal, for summer use 20°. Flat-laid modules lose 15.2 % versus the optimum. Adjusting twice a year would add 3.2 % here, monthly adjustment 4.2 % — only relevant for adjustable mounts.
Is a balcony solar kit worth it in Villach?
A vertical south-facing railing in Villach harvests 985 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 109 % 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
- Klagenfurt am Wörthersee3.93 kWh/m²/d34 km
- Wolfsberg4.26 kWh/m²/d80 km