Sun times in Boston on 24 September 2026
| Sunrise | 06:35 | rises toward E (90°) |
|---|---|---|
| Solar noon | 12:38 | sun 47.2° above the horizon |
| Sunset | 18:40 | sets toward W (270°) |
| Day length | 12 h 06 min | |
| Civil dawn | 06:07 | first usable light |
| Civil dusk | 19:08 | last usable light |
| Golden hour, morning | 06:35–07:12 | warm low light |
| Golden hour, evening | 18:03–18:40 | warm low light |
| Shadow at noon | 0.93 m | per metre of height |
Times are computed for 42.3601°, -71.0589° and refreshed every day. For any other date, an exact azimuth or a shadow drawn on the map, open the interactive sun position map for Boston.
The sun through the year in Boston
| Month | Sunrise | Sunset | Day length | Noon altitude |
|---|---|---|---|---|
| January | 07:12 | 16:37 | 9 h 25 min | 26.5° |
| February | 06:42 | 17:17 | 10 h 35 min | 35.0° |
| March | 06:58 | 18:51 | 11 h 54 min | 45.5° |
| April | 06:05 | 19:26 | 13 h 22 min | 57.4° |
| May | 05:24 | 20:00 | 14 h 35 min | 66.5° |
| June | 05:08 | 20:24 | 15 h 16 min | 70.9° |
| July | 05:22 | 20:21 | 14 h 59 min | 69.2° |
| August | 05:53 | 19:48 | 13 h 55 min | 61.7° |
| September | 06:25 | 18:56 | 12 h 31 min | 50.7° |
| October | 06:58 | 18:04 | 11 h 06 min | 39.1° |
| November | 06:36 | 16:24 | 9 h 48 min | 29.2° |
| December | 07:08 | 16:14 | 9 h 06 min | 24.4° |
At the June solstice the midday sun reaches 71.1° above the horizon in Boston and the day lasts 15 h 17 min. At the December solstice the sun climbs only to 24.2° and the day shrinks to 9 h 04 min. That difference is what decides whether a garden, a window or a solar array sees the sun in winter.
Planning around the sun in Boston
Solar panels
At this latitude a fixed array facing the equator collects the most over a year at a tilt of about 35°. Use the solar panel angle calculator with the coordinates 42.3601°, -71.0589° for the exact optimum, the seasonal optima and the loss from an east or west facing roof.
Buying a flat or a plot
In December the noon sun in Boston sits 24.2° above the horizon, so every obstacle casts a shadow 2.2 times its own height at midday. Check what stands to the south before you commit: place the building on the map and read the shaded hours for 21 December.
Photography
Golden hour runs 06:35–07:12 in the morning and 18:03–18:40 in the evening today, and the sun sets toward sets toward W (270°). The golden hour calculator gives the same windows for any date, and the map's alignment finder shows the days when the setting sun lines up with a street.