The sun, month by month
Sunrise and sunset in Santiago in September
On September 1 in Santiago the sun rises at 06:59 and sets at 18:26; on day 30 it rises at 07:18 and sets at 19:46. Over the month the day grows 61 minutes longer.
In Santiago (-33.5° latitude), September 2026 has 30 days whose sun rises at 06:59 and sets at 18:26 on the 1st, and at 07:18 and 19:46 on the 30th. Mid-month the day lasts 11 h 56 min and the sun reaches 54° above the horizon. Vitamin D synthesis is possible between 11:00 and 17:00, which is when the UV index reaches at least 3: at the best moment of the day about 8 minutes are enough for a mid-range skin phototype with a quarter of the body exposed to make around 1000 IU.
Where does the sun rise and set in Santiago in September?
Mid-September in Santiago: the sun rises in the east — a bearing of 88°, measured from true north — and sets in the west, at 272°. That is 2° north of due east at sunrise, and the same 2° north of due west at sunset. From the 1st to the last day of the month both points shift 14° 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 Santiago. Dawn and dusk mark civil twilight.
| Day | Dawn | Sunrise | Sunset | Dusk | Day length |
|---|---|---|---|---|---|
| 1 | 06:34 | 06:59 | 18:26 | 18:51 | 11 h 27 min |
| 2 | 06:32 | 06:57 | 18:26 | 18:51 | 11 h 29 min |
| 3 | 06:31 | 06:56 | 18:27 | 18:52 | 11 h 31 min |
| 4 | 06:30 | 06:55 | 18:28 | 18:53 | 11 h 33 min |
| 5 | 06:28 | 06:53 | 18:28 | 18:53 | 11 h 35 min |
| 6 | 07:27 | 07:52 | 19:29 | 19:54 | 11 h 37 min |
| 7 | 07:26 | 07:50 | 19:30 | 19:55 | 11 h 39 min |
| 8 | 07:24 | 07:49 | 19:31 | 19:55 | 11 h 41 min |
| 9 | 07:23 | 07:48 | 19:31 | 19:56 | 11 h 44 min |
| 10 | 07:21 | 07:46 | 19:32 | 19:57 | 11 h 46 min |
| 11 | 07:20 | 07:45 | 19:33 | 19:57 | 11 h 48 min |
| 12 | 07:19 | 07:43 | 19:33 | 19:58 | 11 h 50 min |
| 13 | 07:17 | 07:42 | 19:34 | 19:59 | 11 h 52 min |
| 14 | 07:16 | 07:40 | 19:35 | 19:59 | 11 h 54 min |
| 15 | 07:14 | 07:39 | 19:35 | 20:00 | 11 h 56 min |
| 16 | 07:13 | 07:38 | 19:36 | 20:01 | 11 h 58 min |
| 17 | 07:11 | 07:36 | 19:37 | 20:01 | 12 h 01 min |
| 18 | 07:10 | 07:35 | 19:37 | 20:02 | 12 h 03 min |
| 19 | 07:09 | 07:33 | 19:38 | 20:03 | 12 h 05 min |
| 20 | 07:07 | 07:32 | 19:39 | 20:04 | 12 h 07 min |
| 21 | 07:06 | 07:30 | 19:39 | 20:04 | 12 h 09 min |
| 22 | 07:04 | 07:29 | 19:40 | 20:05 | 12 h 11 min |
| 23 | 07:03 | 07:28 | 19:41 | 20:06 | 12 h 13 min |
| 24 | 07:01 | 07:26 | 19:42 | 20:06 | 12 h 15 min |
| 25 | 07:00 | 07:25 | 19:42 | 20:07 | 12 h 18 min |
| 26 | 06:58 | 07:23 | 19:43 | 20:08 | 12 h 20 min |
| 27 | 06:57 | 07:22 | 19:44 | 20:09 | 12 h 22 min |
| 28 | 06:56 | 07:21 | 19:44 | 20:09 | 12 h 24 min |
| 29 | 06:54 | 07:19 | 19:45 | 20:10 | 12 h 26 min |
| 30 | 06:53 | 07:18 | 19:46 | 20:11 | 12 h 28 min |
Approximate astronomical values: they can shift a minute or two from year to year.
What about vitamin D in September?
In September, the typical synthesis window in Santiago runs from 11:00 to 17:00: with medium skin and a t-shirt, ~8 min at the best moment is enough.
See the Santiago vitamin D guideCommon questions about the sun in Santiago in September
- Where does the sun set in Santiago in September?
- Mid-September in Santiago: the sun sets in the west, a bearing of 272° measured from true north, which is 2° north of due west. It rises in the east, at 88°. Over the month both points shift 14° south.
- How much daylight does Santiago gain in September?
- Over September the day gets 61 minutes longer in Santiago: on September 1 the sun rises at 06:59 and sets at 18:26, and on day 30 it rises at 07:18 and sets at 19:46.
- How many hours of daylight does Santiago get in September?
- In mid-September the day lasts 11 h 56 min in Santiago, from sunrise at 07:39 to sunset at 19:35. The table has the day length for each of the 30 days of the month.
- What time does it start to get light in Santiago in September?
- In mid-September the sky starts to get light at 07:14 in Santiago, when the sun is 6° below the horizon, and the sun itself does not rise until 07:39. The “Dawn” column of the table gives that time for every day of the month.
- What time does it get dark in Santiago in September?
- It's not the same time as sunset. In mid-September in Santiago the sun sets at 19:35, but there is still light: civil twilight does not end until 20:00, 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 Santiago in September?
- In mid-September, between 11:00 and 17:00: that is the stretch of the day when the UV index reaches 3 in Santiago, the minimum for the skin to make vitamin D. At the best moment of the day about 8 minutes are enough for a mid-range skin phototype with a quarter of the body exposed to make around 1000 IU.