Location data · Bremen
Sun hours in Bremerhaven
How sunny is Bremerhaven? Over a year the sun delivers 1,254 kilowatt-hours onto every square metre here — in June roughly 6 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 3.44 peak sun hours per day in Bremerhaven. In 9 out of 10 years at least 1,193 kWh/m² are reached. All values are computed from this location’s satellite hourly data, not estimated.
- Annual average (PSH)
- 3.44 kWh/m²/d
- P90 annual total
- 1,193 kWh/m²
- Optimal tilt
- 40°
- Terrain horizon max.
- 0.4°
Sun hours per month
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PSH/day (35° south) | 1.05 | 2.03 | 3.41 | 5.01 | 5.29 | 5.47 | 5.26 | 4.84 | 3.96 | 2.60 | 1.36 | 0.88 |
| P90 | 0.84 | 1.45 | 2.84 | 4.07 | 4.47 | 4.79 | 4.76 | 4.20 | 3.45 | 2.21 | 1.09 | 0.70 |
Daily average per month in kWh/m² at 35° tilt, south-facing, including the terrain horizon of Bremerhaven. P90 = reached in 9 out of 10 years.
Optimal tilt angle in Bremerhaven
The annual optimum for Bremerhaven 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 15.3 % versus the optimum. Adjusting twice a year would add 2.8 % here, monthly adjustment 3.9 % — only relevant for adjustable mounts.
Is a balcony solar kit worth it in Bremerhaven?
A vertical south-facing railing in Bremerhaven harvests 917 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 →
Neighbouring places compared
- Wilhelmshaven3.39 kWh/m²/d31 km
- Varel3.39 kWh/m²/d34 km
- Cuxhaven3.39 kWh/m²/d36 km