The sun, month by month
Sunrise and sunset in Oslo in September
On September 1 in Oslo the sun rises at 06:15 and sets at 20:18; on day 30 it rises at 07:26 and sets at 18:46. Over the month the day gets 162 minutes shorter.
In Oslo (59.9° latitude), September 2026 has 30 days whose sun rises at 06:15 and sets at 20:18 on the 1st, and at 07:26 and 18:46 on the 30th. Mid-month the day lasts 12 h 44 min and the sun reaches 32° above the horizon. Even so, the UV index never reaches 3 at any point in the month: at this latitude and time of year, the ozone layer absorbs UVB before enough of it reaches the ground. So in September there is no vitamin D synthesis in Oslo at any hour of the day, however long you stay out.
Where does the sun rise and set in Oslo in September?
Mid-September in Oslo: the sun rises in the east — a bearing of 84°, measured from true north — and sets in the west, at 276°. That is 6° north of due east at sunrise, and the same 6° north of due west at sunset. From the 1st to the last day of the month both points shift 23° 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 Oslo. Dawn and dusk mark civil twilight.
| Day | Dawn | Sunrise | Sunset | Dusk | Day length |
|---|---|---|---|---|---|
| 1 | 05:31 | 06:15 | 20:18 | 21:02 | 14 h 02 min |
| 2 | 05:34 | 06:18 | 20:14 | 20:59 | 13 h 57 min |
| 3 | 05:36 | 06:20 | 20:11 | 20:55 | 13 h 51 min |
| 4 | 05:39 | 06:23 | 20:08 | 20:52 | 13 h 45 min |
| 5 | 05:42 | 06:25 | 20:05 | 20:49 | 13 h 40 min |
| 6 | 05:44 | 06:28 | 20:02 | 20:45 | 13 h 34 min |
| 7 | 05:47 | 06:30 | 19:59 | 20:42 | 13 h 29 min |
| 8 | 05:50 | 06:33 | 19:56 | 20:39 | 13 h 23 min |
| 9 | 05:52 | 06:35 | 19:52 | 20:35 | 13 h 17 min |
| 10 | 05:55 | 06:37 | 19:49 | 20:32 | 13 h 12 min |
| 11 | 05:57 | 06:40 | 19:46 | 20:29 | 13 h 06 min |
| 12 | 06:00 | 06:42 | 19:43 | 20:25 | 13 h 01 min |
| 13 | 06:02 | 06:45 | 19:40 | 20:22 | 12 h 55 min |
| 14 | 06:05 | 06:47 | 19:37 | 20:19 | 12 h 50 min |
| 15 | 06:08 | 06:50 | 19:33 | 20:15 | 12 h 44 min |
| 16 | 06:10 | 06:52 | 19:30 | 20:12 | 12 h 38 min |
| 17 | 06:13 | 06:54 | 19:27 | 20:09 | 12 h 33 min |
| 18 | 06:15 | 06:57 | 19:24 | 20:06 | 12 h 27 min |
| 19 | 06:18 | 06:59 | 19:21 | 20:02 | 12 h 22 min |
| 20 | 06:20 | 07:02 | 19:18 | 19:59 | 12 h 16 min |
| 21 | 06:23 | 07:04 | 19:15 | 19:56 | 12 h 11 min |
| 22 | 06:25 | 07:06 | 19:11 | 19:53 | 12 h 05 min |
| 23 | 06:28 | 07:09 | 19:08 | 19:50 | 11 h 59 min |
| 24 | 06:30 | 07:11 | 19:05 | 19:46 | 11 h 54 min |
| 25 | 06:32 | 07:14 | 19:02 | 19:43 | 11 h 48 min |
| 26 | 06:35 | 07:16 | 18:59 | 19:40 | 11 h 43 min |
| 27 | 06:37 | 07:19 | 18:56 | 19:37 | 11 h 37 min |
| 28 | 06:40 | 07:21 | 18:53 | 19:34 | 11 h 32 min |
| 29 | 06:42 | 07:23 | 18:50 | 19:31 | 11 h 26 min |
| 30 | 06:45 | 07:26 | 18:46 | 19:28 | 11 h 21 min |
Approximate astronomical values: they can shift a minute or two from year to year.
What about vitamin D in September?
In September the sun doesn't climb high enough in Oslo for vitamin D synthesis: the season to mind your diet or consider supplementation.
See the Oslo vitamin D guideCommon questions about the sun in Oslo in September
- Where does the sun set in Oslo in September?
- Mid-September in Oslo: the sun sets in the west, a bearing of 276° measured from true north, which is 6° north of due west. It rises in the east, at 84°. Over the month both points shift 23° south.
- How much daylight does Oslo lose in September?
- Over September the day gets 162 minutes shorter in Oslo: on September 1 the sun rises at 06:15 and sets at 20:18, and on day 30 it rises at 07:26 and sets at 18:46.
- How many hours of daylight does Oslo get in September?
- In mid-September the day lasts 12 h 44 min in Oslo, from sunrise at 06:50 to sunset at 19:33. The table has the day length for each of the 30 days of the month.
- What time does it start to get light in Oslo in September?
- In mid-September the sky starts to get light at 06:08 in Oslo, when the sun is 6° below the horizon, and the sun itself does not rise until 06:50. The “Dawn” column of the table gives that time for every day of the month.
- What time does it get dark in Oslo in September?
- It's not the same time as sunset. In mid-September in Oslo the sun sets at 19:33, but there is still light: civil twilight does not end until 20:15, 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 Oslo in September?
- At no time of day. Not even at midday on September 15 does the UV index reach 3 in Oslo, and below that minimum the skin makes no vitamin D, however long you stay out. In September it is the season to mind your diet or consider supplementation.