Location data · Vaud
Sun hours in Yverdon-les-Bains
How sunny is Yverdon-les-Bains? Over a year the sun delivers 1,602 kilowatt-hours onto every square metre here — in June roughly 3 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 4.39 peak sun hours per day in Yverdon-les-Bains. In 9 out of 10 years at least 1,491 kWh/m² are reached. All values are computed from this location’s satellite hourly data, not estimated.
- Annual average (PSH)
- 4.39 kWh/m²/d
- P90 annual total
- 1,491 kWh/m²
- Optimal tilt
- 40°
- Terrain horizon max.
- 4.6°
Sun hours per month
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PSH/day (35° south) | 2.32 | 3.50 | 4.57 | 5.46 | 5.45 | 6.14 | 6.18 | 5.74 | 5.18 | 3.76 | 2.42 | 1.90 |
| P90 | 1.70 | 2.59 | 3.49 | 4.30 | 4.76 | 5.28 | 5.52 | 5.17 | 4.62 | 3.26 | 1.95 | 1.41 |
Daily average per month in kWh/m² at 35° tilt, south-facing, including the terrain horizon of Yverdon-les-Bains. P90 = reached in 9 out of 10 years.
Optimal tilt angle in Yverdon-les-Bains
The annual optimum for Yverdon-les-Bains is 40° south; anything between 26° and 51° counts as equivalent (below 2% difference). For winter operation (off-grid) 65° is optimal, for summer use 20°. Flat-laid modules lose 17.1 % versus the optimum. Adjusting twice a year would add 3.3 % here, monthly adjustment 4.2 % — only relevant for adjustable mounts.
Is a balcony solar kit worth it in Yverdon-les-Bains?
A vertical south-facing railing in Yverdon-les-Bains harvests 1,136 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 →