Location data · North Rhine-Westphalia
Sun hours in Münster
How sunny is Münster? Over a year the sun delivers 1,289 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 3.53 peak sun hours per day in Münster. In 9 out of 10 years at least 1,206 kWh/m² are reached. All values are computed from this location’s satellite hourly data, not estimated.
- Annual average (PSH)
- 3.53 kWh/m²/d
- P90 annual total
- 1,206 kWh/m²
- Optimal tilt
- 40°
- Terrain horizon max.
- 1.1°
Sun hours per month
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PSH/day (35° south) | 1.17 | 2.12 | 3.54 | 4.91 | 5.26 | 5.52 | 5.32 | 4.89 | 4.15 | 2.79 | 1.61 | 1.03 |
| P90 | 0.91 | 1.52 | 2.87 | 4.20 | 4.44 | 4.90 | 4.77 | 4.41 | 3.62 | 2.16 | 1.24 | 0.71 |
Daily average per month in kWh/m² at 35° tilt, south-facing, including the terrain horizon of Münster. P90 = reached in 9 out of 10 years.
Optimal tilt angle in Münster
The annual optimum for Münster is 40° south; anything between 25° and 52° counts as equivalent (below 2% difference). For winter operation (off-grid) 70° is optimal, for summer use 20°. Flat-laid modules lose 15.5 % versus the optimum. Adjusting twice a year would add 3.1 % here, monthly adjustment 3.9 % — only relevant for adjustable mounts.
Is a balcony solar kit worth it in Münster?
A vertical south-facing railing in Münster harvests 936 kWh/m² per year — 73 % 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 121 % of the 35° December value, computed from the same hourly data with its own plane transposition. Open the balcony solar calculator with these coordinates →