Longest and shortest day in Adelaide
In Adelaide, Australia, the longest day of 2026 is around the December solstice on Monday, 21 December 2026, with 14h 31m of daylight, and the shortest is around the June solstice on Sunday, 21 June 2026, with 9h 48m.
| Turning point | Date | Sunrise | Sunset | Day length |
|---|---|---|---|---|
| March equinox | Friday, 20 March 2026 | 07:18 | 19:27 | 12h 9m |
| June solstice | Sunday, 21 June 2026 | 07:23 | 17:11 | 9h 48m |
| September equinox | Tuesday, 22 September 2026 | 06:05 | 18:11 | 12h 6m |
| December solstice | Monday, 21 December 2026 | 05:58 | 20:28 | 14h 31m |
| Month | Sunrise | Sunset | Day length |
|---|---|---|---|
| January | 06:17 | 20:32 | 14h 15m |
| February | 06:48 | 20:10 | 13h 21m |
| March | 07:14 | 19:34 | 12h 21m |
| April | 06:38 | 17:52 | 11h 14m |
| May | 07:02 | 17:21 | 10h 19m |
| June | 07:21 | 17:10 | 9h 49m |
| July | 07:21 | 17:22 | 10h 1m |
| August | 06:56 | 17:44 | 10h 48m |
| September | 06:15 | 18:06 | 11h 51m |
| October | 06:33 | 19:29 | 12h 56m |
| November | 06:02 | 19:58 | 13h 57m |
| December | 05:55 | 20:25 | 14h 29m |
Why the day gets longer and shorter in Adelaide
Earth's axis is tilted about 23.4 degrees, so as the planet orbits the Sun, Adelaide 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 Adelaide sits from the equator: the further away, the bigger the difference between the longest and shortest day.
Frequently asked questions about day length in Adelaide
When is the longest day in Adelaide?
The longest day in Adelaide falls around the December solstice, on Monday, 21 December 2026 in 2026, with about 14h 31m of daylight, sunrise at 05:58 and sunset at 20:28.
When is the shortest day in Adelaide?
The shortest day in Adelaide falls around the June solstice, on Sunday, 21 June 2026 in 2026, with about 9h 48m of daylight, sunrise at 07:23 and sunset at 17:11.
How much does day length change through the year in Adelaide?
Between the longest and shortest day, Adelaide gains and loses about 4h 43m of daylight. The change is fastest around the March and September equinoxes and slowest near the solstices.
Every figure is computed from Adelaide's coordinates with SunCalc, not looked up from a table.