What time does the sun rise in Buenos Aires in October?

On October 1 it rises at 06:27 and on day 31 at 05:50, always in local time.

How long is the day in Buenos Aires in October?

Around 13 h 02 min at mid-month.

The sun, month by month

Sunrise and sunset in Buenos Aires in October

On October 1 in Buenos Aires the sun rises at 06:27 and sets at 18:58; on day 31 it rises at 05:50 and sets at 19:24. Over the month the day grows 63 minutes longer.

Sunrise06:08

Sunset19:10

Golden hour18:36–19:10

Day length13 h 02 min

Day by day

All times are local to Buenos Aires. Dawn and dusk mark civil twilight.

Day	Dawn	Sunrise	Sunset	Dusk	Day length
1	06:01	06:27	18:58	19:23	12 h 31 min
2	05:60	06:25	18:59	19:24	12 h 34 min
3	05:58	06:24	18:60	19:25	12 h 36 min
4	05:57	06:22	19:00	19:26	12 h 38 min
5	05:56	06:21	19:01	19:27	12 h 40 min
6	05:54	06:20	19:02	19:28	12 h 42 min
7	05:53	06:18	19:03	19:28	12 h 45 min
8	05:51	06:17	19:04	19:29	12 h 47 min
9	05:50	06:16	19:05	19:30	12 h 49 min
10	05:49	06:14	19:05	19:31	12 h 51 min
11	05:47	06:13	19:06	19:32	12 h 53 min
12	05:46	06:12	19:07	19:33	12 h 55 min
13	05:44	06:10	19:08	19:34	12 h 58 min
14	05:43	06:09	19:09	19:35	12 h 60 min
15	05:42	06:08	19:10	19:35	13 h 02 min
16	05:41	06:06	19:10	19:36	13 h 04 min
17	05:39	06:05	19:11	19:37	13 h 06 min
18	05:38	06:04	19:12	19:38	13 h 08 min
19	05:37	06:03	19:13	19:39	13 h 10 min
20	05:35	06:02	19:14	19:40	13 h 12 min
21	05:34	06:01	19:15	19:41	13 h 14 min
22	05:33	05:59	19:16	19:42	13 h 16 min
23	05:32	05:58	19:17	19:43	13 h 18 min
24	05:31	05:57	19:18	19:44	13 h 20 min
25	05:30	05:56	19:19	19:45	13 h 22 min
26	05:28	05:55	19:19	19:46	13 h 24 min
27	05:27	05:54	19:20	19:47	13 h 26 min
28	05:26	05:53	19:21	19:48	13 h 28 min
29	05:25	05:52	19:22	19:49	13 h 30 min
30	05:24	05:51	19:23	19:50	13 h 32 min
31	05:23	05:50	19:24	19:51	13 h 34 min

Approximate astronomical values: they can shift a minute or two from year to year.

What about vitamin D in October?

In October, the typical synthesis window in Buenos Aires runs from 10:00 to 17:00: with medium skin and a t-shirt, ~6 min at the best moment is enough.

See the Buenos Aires vitamin D guide