Longest and shortest day in Bilbao
In Bilbao, Spain, the longest day of 2026 is around the June solstice on Sunday, 21 June 2026, with 15h 24m of daylight, and the shortest is around the December solstice on Monday, 21 December 2026, with 8h 58m.
| Turning point | Date | Sunrise | Sunset | Day length |
|---|---|---|---|---|
| March equinox | Friday, 20 March 2026 | 07:15 | 19:23 | 12h 9m |
| June solstice | Sunday, 21 June 2026 | 06:31 | 21:55 | 15h 24m |
| September equinox | Tuesday, 22 September 2026 | 07:58 | 20:09 | 12h 10m |
| December solstice | Monday, 21 December 2026 | 08:40 | 17:39 | 8h 58m |
| Month | Sunrise | Sunset | Day length |
|---|---|---|---|
| January | 08:41 | 18:01 | 9h 20m |
| February | 08:10 | 18:42 | 10h 32m |
| March | 07:24 | 19:17 | 11h 53m |
| April | 07:30 | 20:54 | 13h 24m |
| May | 06:48 | 21:28 | 14h 40m |
| June | 06:31 | 21:53 | 15h 22m |
| July | 06:45 | 21:49 | 15h 4m |
| August | 07:17 | 21:14 | 13h 58m |
| September | 07:51 | 20:22 | 12h 31m |
| October | 08:25 | 19:28 | 11h 4m |
| November | 08:04 | 17:47 | 9h 43m |
| December | 08:36 | 17:36 | 9h 0m |
Why the day gets longer and shorter in Bilbao
Earth's axis is tilted about 23.4 degrees, so as the planet orbits the Sun, Bilbao leans toward the Sun for part of the year and away for the rest. When it leans toward the Sun the days lengthen and the Sun climbs higher; half a year later the opposite happens. The size of the swing depends on how far Bilbao sits from the equator: the further away, the bigger the difference between the longest and shortest day.
Frequently asked questions about day length in Bilbao
When is the longest day in Bilbao?
The longest day in Bilbao falls around the June solstice, on Sunday, 21 June 2026 in 2026, with about 15h 24m of daylight, sunrise at 06:31 and sunset at 21:55.
When is the shortest day in Bilbao?
The shortest day in Bilbao falls around the December solstice, on Monday, 21 December 2026 in 2026, with about 8h 58m of daylight, sunrise at 08:40 and sunset at 17:39.
How much does day length change through the year in Bilbao?
Between the longest and shortest day, Bilbao gains and loses about 6h 26m of daylight. The change is fastest around the March and September equinoxes and slowest near the solstices.
Every figure is computed from Bilbao's coordinates with SunCalc, not looked up from a table.