Location
London, United KingdomDate & time
Europe/London
Window & Balcony Sun
Centre the map on your window or balcony. Set the direction pointing straight out from its wall, or choose a point outside on the map.
Potential sun exposure
Sun is in front of this side
- 07:23–16:08
Total potential exposure: 525 min
Times are approximate to one minute and use the selected location’s time zone. Europe/London
Assumes an unobstructed vertical face. Buildings, trees, hills, overhangs and window recesses are not included. This is not a prediction of indoor brightness or actual hours of direct sun.
Compare sun paths
Coloured lines show each date on the sun-path diagram. Numbers identify the comparison paths. Readouts use the main date.
Sun times
Window & Balcony Sun
Find when the sun faces your window or balcony. Choose an outward direction, explore potential exposure periods and compare sun paths across dates.
How this planner works
Assumes an unobstructed vertical face. Buildings, trees, hills, overhangs and window recesses are not included. This is not a prediction of indoor brightness or actual hours of direct sun.
Times are approximate to one minute and use the selected location’s time zone.
Plan sunlight anywhere
Check surrounding building and terrain shadows in the SunCast app, then explore the sun path on site in AR.
Download on the App StoreKeep exploring
Window sun FAQ
How do I find when the sun hits my window?
Set the location, then turn the direction marker to the way the window or balcony faces outwards. The planner shows when the sun is above the horizon and within 90° either side of that direction, and you can compare up to three extra dates.
Which direction gets the most sun?
In the northern hemisphere a south-facing window can see the sun for most of the day. East-facing windows get the morning and west-facing ones the afternoon and evening. A north-facing window only sees direct sun early and late in summer, when the sun rises and sets north of east and west.
How does window sun change through the year?
The sun rises further north and climbs higher in summer, and stays lower and further south in winter. Compare a summer and a winter date to see how the sunny window moves.
Does it account for buildings and trees?
No. It assumes a vertical window with a clear view, so neighbouring buildings, trees, hills, overhangs and deep window recesses can cut the real sunshine short. The SunCast app shows building and terrain shadows.
Does it tell me how bright the room will be?
No. It shows when direct sun can reach the window, not how much light comes into the room or where it falls inside.
