Longest and shortest day in Mar del Plata
In Mar del Plata, Argentina, the longest day of 2026 is around the December solstice on Monday, 21 December 2026, with 14h 49m of daylight, and the shortest is around the June solstice on Sunday, 21 June 2026, with 9h 31m.
| Turning point | Date | Sunrise | Sunset | Day length |
|---|---|---|---|---|
| March equinox | Friday, 20 March 2026 | 06:53 | 19:01 | 12h 8m |
| June solstice | Sunday, 21 June 2026 | 08:06 | 17:37 | 9h 31m |
| September equinox | Tuesday, 22 September 2026 | 06:39 | 18:46 | 12h 7m |
| December solstice | Monday, 21 December 2026 | 05:24 | 20:12 | 14h 49m |
| Month | Sunrise | Sunset | Day length |
|---|---|---|---|
| January | 05:44 | 20:14 | 14h 30m |
| February | 06:19 | 19:48 | 13h 29m |
| March | 06:48 | 19:09 | 12h 21m |
| April | 07:16 | 18:23 | 11h 6m |
| May | 07:43 | 17:48 | 10h 5m |
| June | 08:04 | 17:36 | 9h 32m |
| July | 08:03 | 17:49 | 9h 47m |
| August | 07:35 | 18:14 | 10h 40m |
| September | 06:50 | 18:40 | 11h 50m |
| October | 06:04 | 19:07 | 13h 3m |
| November | 05:29 | 19:40 | 14h 11m |
| December | 05:21 | 20:09 | 14h 47m |
Why the day gets longer and shorter in Mar del Plata
Earth's axis is tilted about 23.4 degrees, so as the planet orbits the Sun, Mar del Plata 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 Mar del Plata sits from the equator: the further away, the bigger the difference between the longest and shortest day.
Frequently asked questions about day length in Mar del Plata
When is the longest day in Mar del Plata?
The longest day in Mar del Plata falls around the December solstice, on Monday, 21 December 2026 in 2026, with about 14h 49m of daylight, sunrise at 05:24 and sunset at 20:12.
When is the shortest day in Mar del Plata?
The shortest day in Mar del Plata falls around the June solstice, on Sunday, 21 June 2026 in 2026, with about 9h 31m of daylight, sunrise at 08:06 and sunset at 17:37.
How much does day length change through the year in Mar del Plata?
Between the longest and shortest day, Mar del Plata gains and loses about 5h 18m of daylight. The change is fastest around the March and September equinoxes and slowest near the solstices.
Every figure is computed from Mar del Plata's coordinates with SunCalc, not looked up from a table.