July 21, 2026 · Castelo Branco, Portugal
Sunset in Castelo Branco today is at 20:55. Day length is 14h 35m. See below for sunrise, solar noon, dawn and dusk — all times calculated astronomically for Castelo Branco's coordinates and updated daily.
Castelo Branco lies at 40°N. At this latitude, day length varies moderately — from around 10 hours in midwinter to 14–15 hours in midsummer.
Sunset shifts later through spring and earlier through autumn — changing fastest near the equinoxes and slowest near the summer and winter solstices. See the year chart to visualise how sunset times shift month by month for Castelo Branco.
The longest day in Castelo Branco is around 14h 60m (around June 21). The shortest is around 9h 21m (around December 21). Days are currently getting shorter — losing about 2 minutes per day.
| Month | Sunset | Sunrise | Day length |
|---|---|---|---|
| January | 17:28 | 07:51 | 9h 38m |
| February | 18:05 | 07:25 | 10h 40m |
| March | 18:36 | 06:44 | 11h 51m |
| April | 20:07 | 06:55 | 13h 12m |
| May | 20:37 | 06:17 | 14h 20m |
| June | 21:00 | 06:02 | 14h 58m |
| July | 20:59 | 06:14 | 14h 45m |
| August | 20:30 | 06:42 | 13h 48m |
| September | 19:42 | 07:11 | 12h 32m |
| October | 18:54 | 07:39 | 11h 14m |
| November | 17:16 | 07:14 | 10h 2m |
| December | 17:07 | 07:44 | 9h 23m |