The sun, month by month
Sunrise and sunset in Buenos Aires in August
On August 1 in Buenos Aires the sun rises at 07:47 and sets at 18:12; on day 31 it rises at 07:12 and sets at 18:35. Over the month the day grows 57 minutes longer.
Where does the sun rise and set in Buenos Aires in August?
Mid-August in Buenos Aires: the sun rises in the east — a bearing of 74°, measured from true north — and sets in the west, at 286°. That is 16° north of due east at sunrise, and the same 16° north of due west at sunset. From the 1st to the last day of the month both points shift 12° south.
Approximate bearings: they can be a couple of degrees out. They are measured from true north, not the north a phone compass points to.
Day by day
All times are local to Buenos Aires. Dawn and dusk mark civil twilight.
| Day | Dawn | Sunrise | Sunset | Dusk | Day length |
|---|---|---|---|---|---|
| 1 | 07:20 | 07:47 | 18:12 | 18:39 | 10 h 26 min |
| 2 | 07:19 | 07:46 | 18:13 | 18:40 | 10 h 27 min |
| 3 | 07:18 | 07:45 | 18:14 | 18:40 | 10 h 29 min |
| 4 | 07:18 | 07:44 | 18:15 | 18:41 | 10 h 31 min |
| 5 | 07:17 | 07:43 | 18:15 | 18:42 | 10 h 32 min |
| 6 | 07:16 | 07:42 | 18:16 | 18:43 | 10 h 34 min |
| 7 | 07:15 | 07:41 | 18:17 | 18:43 | 10 h 36 min |
| 8 | 07:14 | 07:40 | 18:18 | 18:44 | 10 h 38 min |
| 9 | 07:13 | 07:39 | 18:18 | 18:45 | 10 h 39 min |
| 10 | 07:12 | 07:38 | 18:19 | 18:45 | 10 h 41 min |
| 11 | 07:11 | 07:37 | 18:20 | 18:46 | 10 h 43 min |
| 12 | 07:10 | 07:36 | 18:21 | 18:47 | 10 h 45 min |
| 13 | 07:09 | 07:35 | 18:21 | 18:47 | 10 h 47 min |
| 14 | 07:08 | 07:34 | 18:22 | 18:48 | 10 h 49 min |
| 15 | 07:07 | 07:32 | 18:23 | 18:49 | 10 h 51 min |
| 16 | 07:05 | 07:31 | 18:24 | 18:50 | 10 h 52 min |
| 17 | 07:04 | 07:30 | 18:24 | 18:50 | 10 h 54 min |
| 18 | 07:03 | 07:29 | 18:25 | 18:51 | 10 h 56 min |
| 19 | 07:02 | 07:28 | 18:26 | 18:52 | 10 h 58 min |
| 20 | 07:01 | 07:26 | 18:27 | 18:52 | 11 h 00 min |
| 21 | 06:59 | 07:25 | 18:27 | 18:53 | 11 h 02 min |
| 22 | 06:58 | 07:24 | 18:28 | 18:54 | 11 h 04 min |
| 23 | 06:57 | 07:23 | 18:29 | 18:55 | 11 h 06 min |
| 24 | 06:56 | 07:21 | 18:30 | 18:55 | 11 h 08 min |
| 25 | 06:54 | 07:20 | 18:30 | 18:56 | 11 h 11 min |
| 26 | 06:53 | 07:19 | 18:31 | 18:57 | 11 h 13 min |
| 27 | 06:52 | 07:17 | 18:32 | 18:57 | 11 h 15 min |
| 28 | 06:51 | 07:16 | 18:33 | 18:58 | 11 h 17 min |
| 29 | 06:49 | 07:15 | 18:33 | 18:59 | 11 h 19 min |
| 30 | 06:48 | 07:13 | 18:34 | 19:00 | 11 h 21 min |
| 31 | 06:46 | 07:12 | 18:35 | 19:00 | 11 h 23 min |
Approximate astronomical values: they can shift a minute or two from year to year.
What about vitamin D in August?
In August, the typical synthesis window in Buenos Aires runs from 12:00 to 15:00: with medium skin and a t-shirt, ~13 min at the best moment is enough.
See the Buenos Aires vitamin D guideCommon questions about the sun in Buenos Aires in August
- Where does the sun set in Buenos Aires in August?
- Mid-August in Buenos Aires: the sun sets in the west, a bearing of 286° measured from true north, which is 16° north of due west. It rises in the east, at 74°. Over the month both points shift 12° south.
- How much daylight does Buenos Aires gain in August?
- Over August the day gets 57 minutes longer in Buenos Aires: on August 1 the sun rises at 07:47 and sets at 18:12, and on day 31 it rises at 07:12 and sets at 18:35.
- How many hours of daylight does Buenos Aires get in August?
- In mid-August the day lasts 10 h 51 min in Buenos Aires, from sunrise at 07:32 to sunset at 18:23. The table has the day length for each of the 31 days of the month.
- What time does it start to get light in Buenos Aires in August?
- In mid-August the sky starts to get light at 07:07 in Buenos Aires, when the sun is 6° below the horizon, and the sun itself does not rise until 07:32. The “Dawn” column of the table gives that time for every day of the month.
- What time does it get dark in Buenos Aires in August?
- It's not the same time as sunset. In mid-August in Buenos Aires the sun sets at 18:23, but there is still light: civil twilight does not end until 18:49, when the sun reaches 6° below the horizon and usable outdoor light runs out. The “Dusk” column of the table gives that time day by day.
- What time of day can you make vitamin D in Buenos Aires in August?
- In mid-August, between 12:00 and 15:00: that is the stretch of the day when the UV index reaches 3 in Buenos Aires, the minimum for the skin to make vitamin D. At the best moment of the day about 13 minutes are enough for a mid-range skin phototype with a quarter of the body exposed to make around 1000 IU.