Daylight & clock · America/Argentina/Buenos_Aires
Daylight and clock changes in Buenos Aires
In short
In Buenos Aires the longest day of the next 12 months has 14 hours 29 minutes of daylight (21 December 2026) and the shortest 9 hours 50 minutes (21 June 2027).
On 15 November 2026 the sun rises at 05:40 and sets at 19:37 local time (-03).
There are no clock changes in the period.
Computed with the NOAA solar equations and IANA tzdb 2026e.
Data updated
Longest day
14 h 29 min
21 Dec
Shortest day
9 h 50 min
21 Jun
Earliest sunrise
05:34
28 Nov
Latest sunset
20:10
31 Dec
Daylight through the year
Sunrise, sunset and day length by month
On the 15th of each month, in local clock time (-03 UTC−03:00).
| Month | First light | Sunrise | Solar noon | Sunset | Last light | Daylight |
|---|---|---|---|---|---|---|
| November 2026-03 | 05:13 | 05:40 | 12:38 | 19:37 | 20:04 | 13 h 56 min |
| December 2026-03 | 05:06 | 05:35 | 12:49 | 20:03 | 20:32 | 14 h 28 min |
| January 2027-03 | 05:28 | 05:56 | 13:03 | 20:09 | 20:38 | 14 h 13 min |
| February 2027-03 | 06:01 | 06:28 | 13:08 | 19:47 | 20:13 | 13 h 19 min |
| March 2027-03 | 06:27 | 06:53 | 13:02 | 19:12 | 19:37 | 12 h 19 min |
| April 2027-03 | 06:51 | 07:17 | 12:54 | 18:30 | 18:55 | 11 h 13 min |
| May 2027-03 | 07:13 | 07:40 | 12:50 | 17:59 | 18:26 | 10 h 19 min |
| June 2027-03 | 07:31 | 07:59 | 12:54 | 17:50 | 18:18 | 9 h 51 min |
| July 2027-03 | 07:31 | 07:58 | 13:00 | 18:01 | 18:29 | 10 h 03 min |
| August 2027-03 | 07:08 | 07:34 | 12:58 | 18:23 | 18:49 | 10 h 49 min |
| September 2027-03 | 06:28 | 06:53 | 12:49 | 18:45 | 19:10 | 11 h 52 min |
| October 2027-03 | 05:46 | 06:12 | 12:39 | 19:08 | 19:33 | 12 h 56 min |
First and last light are civil twilight (sun 6° below the horizon), when outdoor activities are possible without lights.
Golden hour and blue hour by month
The soft light photographers and sightseers plan around, on the 15th of each month in local clock time.
| Month | Golden hourmorning / evening | Blue hourmorning / evening |
|---|---|---|
| November | Morning 05:23–06:16Evening 19:01–19:54 | Morning 05:13–05:23Evening 19:54–20:04 |
| December | Morning 05:17–06:12Evening 19:26–20:21 | Morning 05:06–05:17Evening 20:21–20:32 |
| January | Morning 05:39–06:33Evening 19:33–20:26 | Morning 05:28–05:39Evening 20:26–20:38 |
| February | Morning 06:12–07:02Evening 19:13–20:03 | Morning 06:01–06:12Evening 20:03–20:13 |
| March | Morning 06:37–07:26Evening 18:39–19:27 | Morning 06:27–06:37Evening 19:27–19:37 |
| April | Morning 07:01–07:51Evening 17:56–18:46 | Morning 06:51–07:01Evening 18:46–18:55 |
| May | Morning 07:24–08:17Evening 17:23–18:16 | Morning 07:13–07:24Evening 18:16–18:26 |
| June | Morning 07:41–08:37Evening 17:11–18:07 | Morning 07:31–07:41Evening 18:07–18:18 |
| July | Morning 07:41–08:36Evening 17:23–18:18 | Morning 07:31–07:41Evening 18:18–18:29 |
| August | Morning 07:18–08:09Evening 17:48–18:39 | Morning 07:08–07:18Evening 18:39–18:49 |
| September | Morning 06:38–07:27Evening 18:12–19:00 | Morning 06:28–06:38Evening 19:00–19:10 |
| October | Morning 05:56–06:45Evening 18:34–19:23 | Morning 05:46–05:56Evening 19:23–19:33 |
Golden hour: the sun between 6° above and 4° below the horizon; blue hour: between 4° and 6° below. Definitions vary between sources by a few minutes; clouds and terrain are not modelled.
Clock changes
Buenos Aires
America/Argentina/Buenos_Aires
No clock changes in this period.
Same clock as Buenos Aires
- São Paulo, Brazil
- Asunción, Paraguay
- Montevideo, Uruguay
- Paramaribo, Suriname
- Punta Arenas, Chile
- Rio de Janeiro, Brazil
- Belo Horizonte, Brazil
- Porto Alegre, Brazil
What the data shows
Day length in Buenos Aires ranges from 9 hours 50 minutes on 21 June 2027 to 14 hours 29 minutes on 21 December 2026 — a swing of 4 hours 39 minutes.
How we calculated this: Longest and shortest sunrise-to-sunset span over every day of the period.
Clocks in Buenos Aires run 1 hour 8 minutes ahead of the sun at the extreme: on 4 February 2027 the sun is highest at 13:08, so mornings stay dark later and evenings light longer than the clock suggests.
How we calculated this: Largest gap between 12:00 local clock time and solar noon over the period.
The earliest sunrise is at 05:34 (28 November 2026) and the latest sunset at 20:10 (31 December 2026), local clock time.
How we calculated this: Earliest sunrise and latest sunset (local clock) over every day of the period.
Clocks in Buenos Aires do not change between 1 November 2026 and the end of the period (America/Argentina/Buenos_Aires).
How we calculated this: UTC-offset changes of America/Argentina/Buenos_Aires in tzdb 2026e during the period.
Nearby places with the same clock and almost identical sun times: La Plata.
Search flights to Buenos Aires
Not covered in this guide yet
Weather and climate. We only add these once we can cite an official or verified source.