Seasons · Updated May 28, 2026
Seasonal daylight across the year
Germany sits at a northern latitude where day length swings widely. The same window delivers a very different room in December than it does in June.
Summer light reaches a long way into living spaces; winter light is shorter and lower. Photo: Wikimedia Commons.
Most of Germany lies between roughly 47 and 55 degrees north. At those latitudes the length of the day and the height of the sun in the sky vary strongly with the season — far more than in places nearer the equator. Two things change together: how many hours of daylight there are, and the angle at which that light arrives.
Long summer days, low winter sun
Around the summer solstice in June, northern German cities have very long days, with light in the sky well into the evening. Around the winter solstice in December the daylight window is short, and the sun stays low even at midday. The exact figures shift from the south of the country to the north, but the direction of the change is the same everywhere in Germany: much more daylight in summer, much less in winter.
Why the low winter sun reaches deeper
A low sun shines almost horizontally through a window, so its light can travel well past the window wall and across the floor. This is why a south-facing room can feel surprisingly bright on a clear winter afternoon even though the day is short. The same low angle is easy to block, though: a neighbouring building or a row of trees that is no problem in summer can shade a room entirely in winter.
High summer sun and overheating
In summer the midday sun is high, so direct light enters through the upper part of a window and falls closer to the wall. Rooms receive light for far longer, and south- and west-facing spaces can gather noticeable heat. External shading — shutters, awnings or an overhang — is more effective against high summer sun than internal blinds, because it stops the light before it passes through the glass.
Designing for both seasons
- Favour adjustable shading so a room can welcome low winter sun yet reject high summer sun.
- Keep the view to the southern sky as open as practical, since winter light depends on it.
- Use light interior surfaces so the shorter winter daylight is not wasted.
- Plan evening-use rooms toward the west, where summer light lasts longest.
| Season | Day length | Sun angle | Practical effect |
|---|---|---|---|
| Summer | Long | High | Light for many hours; shading matters |
| Winter | Short | Low | Brief but deep-reaching light |
Working sources
Continue with window orientation or reflective surfaces and daylight.