The sun, month by month
Sunrise and sunset in Vienna in May
On May 1 in Vienna the sun rises at 05:37 and sets at 20:06; on day 31 it rises at 04:59 and sets at 20:45. Over the month the day grows 76 minutes longer.
In Vienna (48.2° latitude), May 2026 has 31 days whose sun rises at 05:37 and sets at 20:06 on the 1st, and at 04:59 and 20:45 on the 31th. Mid-month the day lasts 15 h 10 min and the sun reaches 61° above the horizon. Vitamin D synthesis is possible between 10:00 and 17:00, which is when the UV index reaches at least 3: at the best moment of the day about 9 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 Vienna in May?
Mid-May in Vienna: the sun rises in the northeast — a bearing of 60°, measured from true north — and sets in the northwest, at 300°. That is 30° north of due east at sunrise, and the same 30° north of due west at sunset. From the 1st to the last day of the month both points shift 11° north.
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 Vienna. Dawn and dusk mark civil twilight.
| Day | Dawn | Sunrise | Sunset | Dusk | Day length |
|---|---|---|---|---|---|
| 1 | 05:02 | 05:37 | 20:06 | 20:41 | 14 h 29 min |
| 2 | 05:00 | 05:35 | 20:08 | 20:43 | 14 h 33 min |
| 3 | 04:58 | 05:34 | 20:09 | 20:44 | 14 h 36 min |
| 4 | 04:57 | 05:32 | 20:11 | 20:46 | 14 h 39 min |
| 5 | 04:55 | 05:30 | 20:12 | 20:48 | 14 h 42 min |
| 6 | 04:53 | 05:29 | 20:14 | 20:49 | 14 h 45 min |
| 7 | 04:51 | 05:27 | 20:15 | 20:51 | 14 h 48 min |
| 8 | 04:50 | 05:26 | 20:16 | 20:52 | 14 h 51 min |
| 9 | 04:48 | 05:24 | 20:18 | 20:54 | 14 h 54 min |
| 10 | 04:46 | 05:23 | 20:19 | 20:55 | 14 h 57 min |
| 11 | 04:45 | 05:21 | 20:21 | 20:57 | 14 h 59 min |
| 12 | 04:43 | 05:20 | 20:22 | 20:59 | 15 h 02 min |
| 13 | 04:41 | 05:18 | 20:23 | 21:00 | 15 h 05 min |
| 14 | 04:40 | 05:17 | 20:25 | 21:02 | 15 h 08 min |
| 15 | 04:38 | 05:16 | 20:26 | 21:03 | 15 h 10 min |
| 16 | 04:37 | 05:14 | 20:27 | 21:05 | 15 h 13 min |
| 17 | 04:35 | 05:13 | 20:29 | 21:06 | 15 h 16 min |
| 18 | 04:34 | 05:12 | 20:30 | 21:08 | 15 h 18 min |
| 19 | 04:33 | 05:11 | 20:31 | 21:09 | 15 h 21 min |
| 20 | 04:31 | 05:09 | 20:32 | 21:11 | 15 h 23 min |
| 21 | 04:30 | 05:08 | 20:34 | 21:12 | 15 h 25 min |
| 22 | 04:29 | 05:07 | 20:35 | 21:13 | 15 h 28 min |
| 23 | 04:27 | 05:06 | 20:36 | 21:15 | 15 h 30 min |
| 24 | 04:26 | 05:05 | 20:37 | 21:16 | 15 h 32 min |
| 25 | 04:25 | 05:04 | 20:38 | 21:17 | 15 h 34 min |
| 26 | 04:24 | 05:03 | 20:40 | 21:19 | 15 h 36 min |
| 27 | 04:23 | 05:02 | 20:41 | 21:20 | 15 h 38 min |
| 28 | 04:22 | 05:01 | 20:42 | 21:21 | 15 h 40 min |
| 29 | 04:21 | 05:01 | 20:43 | 21:23 | 15 h 42 min |
| 30 | 04:20 | 05:00 | 20:44 | 21:24 | 15 h 44 min |
| 31 | 04:19 | 04:59 | 20:45 | 21:25 | 15 h 46 min |
Approximate astronomical values: they can shift a minute or two from year to year.
What about vitamin D in May?
In May, the typical synthesis window in Vienna runs from 10:00 to 17:00: with medium skin and a t-shirt, ~9 min at the best moment is enough.
See the Vienna vitamin D guideCommon questions about the sun in Vienna in May
- Where does the sun set in Vienna in May?
- Mid-May in Vienna: the sun sets in the northwest, a bearing of 300° measured from true north, which is 30° north of due west. It rises in the northeast, at 60°. Over the month both points shift 11° north.
- How much daylight does Vienna gain in May?
- Over May the day gets 76 minutes longer in Vienna: on May 1 the sun rises at 05:37 and sets at 20:06, and on day 31 it rises at 04:59 and sets at 20:45.
- How many hours of daylight does Vienna get in May?
- In mid-May the day lasts 15 h 10 min in Vienna, from sunrise at 05:16 to sunset at 20:26. The table has the day length for each of the 31 days of the month.
- What time does it start to get light in Vienna in May?
- In mid-May the sky starts to get light at 04:38 in Vienna, when the sun is 6° below the horizon, and the sun itself does not rise until 05:16. The “Dawn” column of the table gives that time for every day of the month.
- What time does it get dark in Vienna in May?
- It's not the same time as sunset. In mid-May in Vienna the sun sets at 20:26, but there is still light: civil twilight does not end until 21:03, 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 Vienna in May?
- In mid-May, between 10:00 and 17:00: that is the stretch of the day when the UV index reaches 3 in Vienna, the minimum for the skin to make vitamin D. At the best moment of the day about 9 minutes are enough for a mid-range skin phototype with a quarter of the body exposed to make around 1000 IU.