The sun, month by month
Sunrise and sunset in Mexico City in September
On September 1 in Mexico City the sun rises at 06:22 and sets at 18:51; on day 30 it rises at 06:28 and sets at 18:24. Over the month the day gets 33 minutes shorter.
Where does the sun rise and set in Mexico City in September?
Mid-September in Mexico City: the sun rises in the east — a bearing of 87°, measured from true north — and sets in the west, at 273°. That is 3° north of due east at sunrise, and the same 3° 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 Mexico City. Dawn and dusk mark civil twilight.
| Day | Dawn | Sunrise | Sunset | Dusk | Day length |
|---|---|---|---|---|---|
| 1 | 05:59 | 06:22 | 18:51 | 19:13 | 12 h 29 min |
| 2 | 06:00 | 06:22 | 18:50 | 19:12 | 12 h 28 min |
| 3 | 06:00 | 06:22 | 18:49 | 19:11 | 12 h 27 min |
| 4 | 06:00 | 06:22 | 18:48 | 19:10 | 12 h 26 min |
| 5 | 06:00 | 06:22 | 18:47 | 19:09 | 12 h 25 min |
| 6 | 06:00 | 06:23 | 18:46 | 19:08 | 12 h 24 min |
| 7 | 06:01 | 06:23 | 18:45 | 19:07 | 12 h 22 min |
| 8 | 06:01 | 06:23 | 18:44 | 19:06 | 12 h 21 min |
| 9 | 06:01 | 06:23 | 18:43 | 19:05 | 12 h 20 min |
| 10 | 06:01 | 06:23 | 18:42 | 19:04 | 12 h 19 min |
| 11 | 06:02 | 06:24 | 18:41 | 19:03 | 12 h 18 min |
| 12 | 06:02 | 06:24 | 18:41 | 19:03 | 12 h 17 min |
| 13 | 06:02 | 06:24 | 18:40 | 19:02 | 12 h 16 min |
| 14 | 06:02 | 06:24 | 18:39 | 19:01 | 12 h 14 min |
| 15 | 06:02 | 06:24 | 18:38 | 19:00 | 12 h 13 min |
| 16 | 06:03 | 06:25 | 18:37 | 18:59 | 12 h 12 min |
| 17 | 06:03 | 06:25 | 18:36 | 18:58 | 12 h 11 min |
| 18 | 06:03 | 06:25 | 18:35 | 18:57 | 12 h 10 min |
| 19 | 06:03 | 06:25 | 18:34 | 18:56 | 12 h 09 min |
| 20 | 06:03 | 06:25 | 18:33 | 18:55 | 12 h 08 min |
| 21 | 06:04 | 06:26 | 18:32 | 18:54 | 12 h 06 min |
| 22 | 06:04 | 06:26 | 18:31 | 18:53 | 12 h 05 min |
| 23 | 06:04 | 06:26 | 18:30 | 18:52 | 12 h 04 min |
| 24 | 06:04 | 06:26 | 18:29 | 18:51 | 12 h 03 min |
| 25 | 06:04 | 06:26 | 18:28 | 18:50 | 12 h 02 min |
| 26 | 06:05 | 06:27 | 18:27 | 18:49 | 12 h 01 min |
| 27 | 06:05 | 06:27 | 18:27 | 18:48 | 12 h 00 min |
| 28 | 06:05 | 06:27 | 18:26 | 18:48 | 11 h 59 min |
| 29 | 06:05 | 06:27 | 18:25 | 18:47 | 11 h 57 min |
| 30 | 06:06 | 06:28 | 18:24 | 18:46 | 11 h 56 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 Mexico City runs from 09:00 to 17:00: with medium skin and a t-shirt, ~4 min at the best moment is enough.
See the Mexico City vitamin D guideCommon questions about the sun in Mexico City in September
- Where does the sun set in Mexico City in September?
- Mid-September in Mexico City: the sun sets in the west, a bearing of 273° measured from true north, which is 3° north of due west. It rises in the east, at 87°. Over the month both points shift 12° south.
- How much daylight does Mexico City lose in September?
- Over September the day gets 33 minutes shorter in Mexico City: on September 1 the sun rises at 06:22 and sets at 18:51, and on day 30 it rises at 06:28 and sets at 18:24.
- How many hours of daylight does Mexico City get in September?
- In mid-September the day lasts 12 h 13 min in Mexico City, from sunrise at 06:24 to sunset at 18:38. The table has the day length for each of the 30 days of the month.
- What time does it start to get light in Mexico City in September?
- In mid-September the sky starts to get light at 06:02 in Mexico City, when the sun is 6° below the horizon, and the sun itself does not rise until 06:24. The “Dawn” column of the table gives that time for every day of the month.
- What time does it get dark in Mexico City in September?
- It's not the same time as sunset. In mid-September in Mexico City the sun sets at 18:38, but there is still light: civil twilight does not end until 19:00, 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 Mexico City in September?
- In mid-September, between 09:00 and 17:00: that is the stretch of the day when the UV index reaches 3 in Mexico City, the minimum for the skin to make vitamin D. At the best moment of the day about 4 minutes are enough for a mid-range skin phototype with a quarter of the body exposed to make around 1000 IU.