Location data · Lower Austria
Sun hours in St. Pölten
How sunny is St. Pölten? Over a year the sun delivers 1,437 kilowatt-hours onto every square metre here — in June roughly 4 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 3.94 peak sun hours per day in St. Pölten. In 9 out of 10 years at least 1,376 kWh/m² are reached. All values are computed from this location’s satellite hourly data, not estimated.
- Annual average (PSH)
- 3.94 kWh/m²/d
- P90 annual total
- 1,376 kWh/m²
- Optimal tilt
- 40°
- 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) | 1.67 | 2.78 | 3.93 | 5.23 | 5.20 | 5.78 | 5.88 | 5.45 | 4.58 | 3.22 | 1.90 | 1.57 |
| P90 | 1.32 | 2.11 | 3.15 | 4.54 | 4.23 | 4.99 | 5.21 | 4.80 | 3.82 | 2.65 | 1.50 | 1.14 |
Daily average per month in kWh/m² at 35° tilt, south-facing, including the terrain horizon of St. Pölten. P90 = reached in 9 out of 10 years.
Optimal tilt angle in St. Pölten
The annual optimum for St. Pölten is 40° south; anything between 25° and 51° counts as equivalent (below 2% difference). For winter operation (off-grid) 65° is optimal, for summer use 20°. Flat-laid modules lose 16.4 % versus the optimum. Adjusting twice a year would add 3.0 % here, monthly adjustment 3.8 % — only relevant for adjustable mounts.
Is a balcony solar kit worth it in St. Pölten?
A vertical south-facing railing in St. Pölten harvests 1,020 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
- Baden4.07 kWh/m²/d50 km
- Wien3.93 kWh/m²/d54 km
- Wiener Neustadt3.99 kWh/m²/d63 km