The sun, month by month
Sunrise and sunset in Lisbon in August
On August 1 in Lisbon the sun rises at 06:38 and sets at 20:47; on day 31 it rises at 07:06 and sets at 20:07. Over the month the day gets 68 minutes shorter.
Where does the sun rise and set in Lisbon in August?
Mid-August in Lisbon: the sun rises in the east — a bearing of 72°, measured from true north — and sets in the west, at 288°. That is 18° north of due east at sunrise, and the same 18° north of due west at sunset. From the 1st to the last day of the month both points shift 13° 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 | 06:08 | 06:38 | 20:47 | 21:17 | 14 h 09 min |
| 2 | 06:09 | 06:39 | 20:46 | 21:16 | 14 h 07 min |
| 3 | 06:10 | 06:40 | 20:45 | 21:15 | 14 h 05 min |
| 4 | 06:11 | 06:41 | 20:44 | 21:13 | 14 h 03 min |
| 5 | 06:12 | 06:42 | 20:43 | 21:12 | 14 h 01 min |
| 6 | 06:13 | 06:42 | 20:42 | 21:11 | 13 h 59 min |
| 7 | 06:14 | 06:43 | 20:41 | 21:10 | 13 h 57 min |
| 8 | 06:15 | 06:44 | 20:39 | 21:08 | 13 h 55 min |
| 9 | 06:16 | 06:45 | 20:38 | 21:07 | 13 h 53 min |
| 10 | 06:17 | 06:46 | 20:37 | 21:06 | 13 h 51 min |
| 11 | 06:18 | 06:47 | 20:36 | 21:04 | 13 h 49 min |
| 12 | 06:19 | 06:48 | 20:35 | 21:03 | 13 h 46 min |
| 13 | 06:21 | 06:49 | 20:33 | 21:02 | 13 h 44 min |
| 14 | 06:22 | 06:50 | 20:32 | 21:00 | 13 h 42 min |
| 15 | 06:23 | 06:51 | 20:31 | 20:59 | 13 h 40 min |
| 16 | 06:24 | 06:52 | 20:29 | 20:57 | 13 h 37 min |
| 17 | 06:25 | 06:53 | 20:28 | 20:56 | 13 h 35 min |
| 18 | 06:26 | 06:54 | 20:26 | 20:55 | 13 h 33 min |
| 19 | 06:27 | 06:55 | 20:25 | 20:53 | 13 h 30 min |
| 20 | 06:28 | 06:56 | 20:24 | 20:52 | 13 h 28 min |
| 21 | 06:29 | 06:57 | 20:22 | 20:50 | 13 h 26 min |
| 22 | 06:30 | 06:57 | 20:21 | 20:49 | 13 h 23 min |
| 23 | 06:31 | 06:58 | 20:19 | 20:47 | 13 h 21 min |
| 24 | 06:32 | 06:59 | 20:18 | 20:45 | 13 h 18 min |
| 25 | 06:33 | 07:00 | 20:16 | 20:44 | 13 h 16 min |
| 26 | 06:34 | 07:01 | 20:15 | 20:42 | 13 h 14 min |
| 27 | 06:35 | 07:02 | 20:13 | 20:41 | 13 h 11 min |
| 28 | 06:36 | 07:03 | 20:12 | 20:39 | 13 h 09 min |
| 29 | 06:37 | 07:04 | 20:10 | 20:37 | 13 h 06 min |
| 30 | 06:38 | 07:05 | 20:09 | 20:36 | 13 h 04 min |
| 31 | 06:39 | 07:06 | 20:07 | 20:34 | 13 h 01 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 Lisbon runs from 10:00 to 18:00: with medium skin and a t-shirt, ~6 min at the best moment is enough.
See the Lisbon vitamin D guideCommon questions about the sun in Lisbon in August
- Where does the sun set in Lisbon in August?
- Mid-August in Lisbon: the sun sets in the west, a bearing of 288° measured from true north, which is 18° north of due west. It rises in the east, at 72°. Over the month both points shift 13° south.
- How much daylight does Lisbon lose in August?
- Over August the day gets 68 minutes shorter in Lisbon: on August 1 the sun rises at 06:38 and sets at 20:47, and on day 31 it rises at 07:06 and sets at 20:07.
- How many hours of daylight does Lisbon get in August?
- In mid-August the day lasts 13 h 40 min in Lisbon, from sunrise at 06:51 to sunset at 20:31. The table has the day length for each of the 31 days of the month.
- What time does it start to get light in Lisbon in August?
- In mid-August the sky starts to get light at 06:23 in Lisbon, when the sun is 6° below the horizon, and the sun itself does not rise until 06:51. The “Dawn” column of the table gives that time for every day of the month.
- What time does it get dark in Lisbon in August?
- It's not the same time as sunset. In mid-August in Lisbon the sun sets at 20:31, but there is still light: civil twilight does not end until 20:59, 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 August?
- In mid-August, between 10:00 and 18:00: 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 6 minutes are enough for a mid-range skin phototype with a quarter of the body exposed to make around 1000 IU.