The sun, month by month
Sunrise and sunset in Dublin in September
On September 1 in Dublin the sun rises at 06:37 and sets at 20:12; on day 30 it rises at 07:29 and sets at 18:59. Over the month the day gets 125 minutes shorter.
Where does the sun rise and set in Dublin in September?
Mid-September in Dublin: the sun rises in the east — a bearing of 85°, measured from true north — and sets in the west, at 275°. That is 5° north of due east at sunrise, and the same 5° north of due west at sunset. From the 1st to the last day of the month both points shift 19° 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 Dublin. Dawn and dusk mark civil twilight.
| Day | Dawn | Sunrise | Sunset | Dusk | Day length |
|---|---|---|---|---|---|
| 1 | 06:00 | 06:37 | 20:12 | 20:49 | 13 h 35 min |
| 2 | 06:02 | 06:39 | 20:10 | 20:46 | 13 h 31 min |
| 3 | 06:04 | 06:40 | 20:07 | 20:43 | 13 h 27 min |
| 4 | 06:06 | 06:42 | 20:05 | 20:41 | 13 h 23 min |
| 5 | 06:08 | 06:44 | 20:02 | 20:38 | 13 h 18 min |
| 6 | 06:10 | 06:46 | 20:00 | 20:36 | 13 h 14 min |
| 7 | 06:12 | 06:48 | 19:57 | 20:33 | 13 h 10 min |
| 8 | 06:14 | 06:49 | 19:55 | 20:30 | 13 h 05 min |
| 9 | 06:16 | 06:51 | 19:52 | 20:28 | 13 h 01 min |
| 10 | 06:18 | 06:53 | 19:50 | 20:25 | 12 h 57 min |
| 11 | 06:20 | 06:55 | 19:47 | 20:23 | 12 h 52 min |
| 12 | 06:21 | 06:57 | 19:45 | 20:20 | 12 h 48 min |
| 13 | 06:23 | 06:58 | 19:42 | 20:17 | 12 h 44 min |
| 14 | 06:25 | 07:00 | 19:40 | 20:15 | 12 h 39 min |
| 15 | 06:27 | 07:02 | 19:37 | 20:12 | 12 h 35 min |
| 16 | 06:29 | 07:04 | 19:35 | 20:09 | 12 h 31 min |
| 17 | 06:31 | 07:06 | 19:32 | 20:07 | 12 h 26 min |
| 18 | 06:33 | 07:07 | 19:29 | 20:04 | 12 h 22 min |
| 19 | 06:34 | 07:09 | 19:27 | 20:02 | 12 h 18 min |
| 20 | 06:36 | 07:11 | 19:24 | 19:59 | 12 h 13 min |
| 21 | 06:38 | 07:13 | 19:22 | 19:57 | 12 h 09 min |
| 22 | 06:40 | 07:15 | 19:19 | 19:54 | 12 h 05 min |
| 23 | 06:42 | 07:16 | 19:17 | 19:51 | 12 h 00 min |
| 24 | 06:44 | 07:18 | 19:14 | 19:49 | 11 h 56 min |
| 25 | 06:45 | 07:20 | 19:12 | 19:46 | 11 h 52 min |
| 26 | 06:47 | 07:22 | 19:09 | 19:44 | 11 h 47 min |
| 27 | 06:49 | 07:24 | 19:07 | 19:41 | 11 h 43 min |
| 28 | 06:51 | 07:26 | 19:04 | 19:39 | 11 h 39 min |
| 29 | 06:53 | 07:27 | 19:02 | 19:36 | 11 h 34 min |
| 30 | 06:54 | 07:29 | 18:59 | 19:34 | 11 h 30 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 Dublin runs from 12:00 to 15:00: with medium skin and a t-shirt, ~16 min at the best moment is enough.
See the Dublin vitamin D guideCommon questions about the sun in Dublin in September
- Where does the sun set in Dublin in September?
- Mid-September in Dublin: the sun sets in the west, a bearing of 275° measured from true north, which is 5° north of due west. It rises in the east, at 85°. Over the month both points shift 19° south.
- How much daylight does Dublin lose in September?
- Over September the day gets 125 minutes shorter in Dublin: on September 1 the sun rises at 06:37 and sets at 20:12, and on day 30 it rises at 07:29 and sets at 18:59.
- How many hours of daylight does Dublin get in September?
- In mid-September the day lasts 12 h 35 min in Dublin, from sunrise at 07:02 to sunset at 19:37. The table has the day length for each of the 30 days of the month.
- What time does it start to get light in Dublin in September?
- In mid-September the sky starts to get light at 06:27 in Dublin, when the sun is 6° below the horizon, and the sun itself does not rise until 07:02. The “Dawn” column of the table gives that time for every day of the month.
- What time does it get dark in Dublin in September?
- It's not the same time as sunset. In mid-September in Dublin the sun sets at 19:37, but there is still light: civil twilight does not end until 20:12, 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 Dublin in September?
- In mid-September, between 12:00 and 15:00: that is the stretch of the day when the UV index reaches 3 in Dublin, the minimum for the skin to make vitamin D. At the best moment of the day about 16 minutes are enough for a mid-range skin phototype with a quarter of the body exposed to make around 1000 IU.