Sunset in Buenos Aires today
September 12, 2026 · Buenos Aires, Argentina
Capital13,076,300 people
Sunset in Buenos Aires today is at 18:43. Day length is 11h 45m. See below for sunrise, solar noon, dawn and dusk — all times calculated astronomically for Buenos Aires's coordinates and updated daily.
Buenos Aires lies at 35°S. In Buenos Aires, day length ranges from 9h 50m in winter to 14h 28m in summer — a swing of about 4h 38m.
The sun goes down towards the west in Buenos Aires today, at a bearing of 274°. Civil twilight then lasts another 25 minutes before it gets properly dark. The sun sets 24 minutes earlier in Buenos Aires than in Córdoba, 647 km to the west-northwest.
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 Buenos Aires.
The longest day in Buenos Aires is around 14h 28m (around December 21). The shortest is around 9h 50m (around June 21). Days are currently getting longer — gaining about 2 minutes per day.
Sunset in Buenos Aires by month
| Month | Sunset | Sunrise | Day length |
|---|---|---|---|
| January | 20:10 | 05:56 | 14h 14m |
| February | 19:50 | 06:28 | 13h 22m |
| March | 19:15 | 06:53 | 12h 22m |
| April | 18:32 | 07:17 | 11h 16m |
| May | 18:01 | 07:40 | 10h 21m |
| June | 17:50 | 07:59 | 9h 51m |
| July | 18:01 | 07:59 | 10h 2m |
| August | 18:23 | 07:36 | 10h 47m |
| September | 18:45 | 06:55 | 11h 49m |
| October | 19:07 | 06:13 | 12h 54m |
| November | 19:36 | 05:42 | 13h 54m |
| December | 20:02 | 05:36 | 14h 27m |