The sun, month by month
Sunrise and sunset in Lisbon in September
On September 1 in Lisbon the sun rises at 07:07 and sets at 20:05; on day 30 it rises at 07:34 and sets at 19:18. Over the month the day gets 75 minutes shorter.
Where does the sun rise and set in Lisbon in September?
Mid-September in Lisbon: the sun rises in the east — a bearing of 86°, measured from true north — and sets in the west, at 274°. That is 4° north of due east at sunrise, and the same 4° north of due west at sunset. From the 1st to the last day of the month both points shift 15° 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 Lisbon. Dawn and dusk mark civil twilight.
| Day | Dawn | Sunrise | Sunset | Dusk | Day length |
|---|---|---|---|---|---|
| 1 | 06:40 | 07:07 | 20:05 | 20:33 | 12 h 59 min |
| 2 | 06:41 | 07:08 | 20:04 | 20:31 | 12 h 56 min |
| 3 | 06:42 | 07:09 | 20:02 | 20:29 | 12 h 54 min |
| 4 | 06:43 | 07:10 | 20:01 | 20:28 | 12 h 51 min |
| 5 | 06:44 | 07:10 | 19:59 | 20:26 | 12 h 48 min |
| 6 | 06:44 | 07:11 | 19:57 | 20:24 | 12 h 46 min |
| 7 | 06:45 | 07:12 | 19:56 | 20:23 | 12 h 43 min |
| 8 | 06:46 | 07:13 | 19:54 | 20:21 | 12 h 41 min |
| 9 | 06:47 | 07:14 | 19:52 | 20:19 | 12 h 38 min |
| 10 | 06:48 | 07:15 | 19:51 | 20:18 | 12 h 36 min |
| 11 | 06:49 | 07:16 | 19:49 | 20:16 | 12 h 33 min |
| 12 | 06:50 | 07:17 | 19:47 | 20:14 | 12 h 31 min |
| 13 | 06:51 | 07:18 | 19:46 | 20:12 | 12 h 28 min |
| 14 | 06:52 | 07:19 | 19:44 | 20:11 | 12 h 25 min |
| 15 | 06:53 | 07:20 | 19:42 | 20:09 | 12 h 23 min |
| 16 | 06:54 | 07:21 | 19:41 | 20:07 | 12 h 20 min |
| 17 | 06:55 | 07:22 | 19:39 | 20:06 | 12 h 18 min |
| 18 | 06:56 | 07:22 | 19:37 | 20:04 | 12 h 15 min |
| 19 | 06:57 | 07:23 | 19:36 | 20:02 | 12 h 12 min |
| 20 | 06:58 | 07:24 | 19:34 | 20:01 | 12 h 10 min |
| 21 | 06:59 | 07:25 | 19:32 | 19:59 | 12 h 07 min |
| 22 | 07:00 | 07:26 | 19:31 | 19:57 | 12 h 05 min |
| 23 | 07:01 | 07:27 | 19:29 | 19:56 | 12 h 02 min |
| 24 | 07:02 | 07:28 | 19:28 | 19:54 | 11 h 59 min |
| 25 | 07:02 | 07:29 | 19:26 | 19:52 | 11 h 57 min |
| 26 | 07:03 | 07:30 | 19:24 | 19:51 | 11 h 54 min |
| 27 | 07:04 | 07:31 | 19:23 | 19:49 | 11 h 52 min |
| 28 | 07:05 | 07:32 | 19:21 | 19:47 | 11 h 49 min |
| 29 | 07:06 | 07:33 | 19:19 | 19:46 | 11 h 47 min |
| 30 | 07:07 | 07:34 | 19:18 | 19:44 | 11 h 44 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 Lisbon runs from 11:00 to 17:00: with medium skin and a t-shirt, ~8 min at the best moment is enough.
See the Lisbon vitamin D guideCommon questions about the sun in Lisbon in September
- Where does the sun set in Lisbon in September?
- Mid-September in Lisbon: the sun sets in the west, a bearing of 274° measured from true north, which is 4° north of due west. It rises in the east, at 86°. Over the month both points shift 15° south.
- How much daylight does Lisbon lose in September?
- Over September the day gets 75 minutes shorter in Lisbon: on September 1 the sun rises at 07:07 and sets at 20:05, and on day 30 it rises at 07:34 and sets at 19:18.
- How many hours of daylight does Lisbon get in September?
- In mid-September the day lasts 12 h 23 min in Lisbon, from sunrise at 07:20 to sunset at 19:42. The table has the day length for each of the 30 days of the month.
- What time does it start to get light in Lisbon in September?
- In mid-September the sky starts to get light at 06:53 in Lisbon, when the sun is 6° below the horizon, and the sun itself does not rise until 07:20. The “Dawn” column of the table gives that time for every day of the month.
- What time does it get dark in Lisbon in September?
- It's not the same time as sunset. In mid-September in Lisbon the sun sets at 19:42, but there is still light: civil twilight does not end until 20:09, 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 Lisbon 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 Lisbon, 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.