Vitamin D

The sun, month by month

Sunrise and sunset in Reykjavik in January

On January 1 in Reykjavik the sun rises at 11:20 and sets at 15:43; on day 31 it rises at 10:17 and sets at 17:06. Over the month the day grows 147 minutes longer.

Sunrise10:58
Sunset16:17
Golden hour—
Day length5 h 19 min

Where does the sun rise and set in Reykjavik in January?

Where it risesSoutheast143°
Where it setsSouthwest217°

Mid-January in Reykjavik: the sun rises in the southeast — a bearing of 143°, measured from true north — and sets in the southwest, at 217°. That is 53° south of due east at sunrise, and the same 53° south of due west at sunset. From the 1st to the last day of the month both points shift 18° 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 Reykjavik. Dawn and dusk mark civil twilight.

DayDawnSunriseSunsetDuskDay length
110:0311:2015:4316:594 h 23 min
210:0311:1915:4517:014 h 26 min
310:0211:1815:4717:024 h 29 min
410:0211:1715:4917:044 h 32 min
510:0111:1515:5117:054 h 36 min
610:0011:1415:5317:074 h 39 min
709:5911:1215:5617:094 h 43 min
809:5811:1115:5817:114 h 47 min
909:5711:0916:0017:134 h 51 min
1009:5611:0716:0317:144 h 56 min
1109:5511:0616:0617:165 h 00 min
1209:5411:0416:0817:185 h 05 min
1309:5211:0216:1117:205 h 09 min
1409:5111:0016:1417:235 h 14 min
1509:4910:5816:1717:255 h 19 min
1609:4810:5516:2017:275 h 24 min
1709:4610:5316:2217:295 h 29 min
1809:4510:5116:2517:325 h 35 min
1909:4310:4816:2817:345 h 40 min
2009:4110:4616:3117:365 h 45 min
2109:3910:4416:3417:395 h 51 min
2209:3710:4116:3817:415 h 56 min
2309:3510:3816:4117:446 h 02 min
2409:3310:3616:4417:466 h 08 min
2509:3110:3316:4717:496 h 14 min
2609:2910:3116:5017:516 h 20 min
2709:2710:2816:5317:546 h 25 min
2809:2510:2516:5617:566 h 31 min
2909:2310:2217:0017:596 h 37 min
3009:2010:1917:0318:026 h 43 min
3109:1810:1717:0618:046 h 50 min

Approximate astronomical values: they can shift a minute or two from year to year.

What about vitamin D in January?

In January the sun doesn't climb high enough in Reykjavik for vitamin D synthesis: the season to mind your diet or consider supplementation.

See the Reykjavik vitamin D guide

Common questions about the sun in Reykjavik in January

Where does the sun set in Reykjavik in January?
Mid-January in Reykjavik: the sun sets in the southwest, a bearing of 217° measured from true north, which is 53° south of due west. It rises in the southeast, at 143°. Over the month both points shift 18° north.
How much daylight does Reykjavik gain in January?
Over January the day gets 147 minutes longer in Reykjavik: on January 1 the sun rises at 11:20 and sets at 15:43, and on day 31 it rises at 10:17 and sets at 17:06.
How many hours of daylight does Reykjavik get in January?
In mid-January the day lasts 5 h 19 min in Reykjavik, from sunrise at 10:58 to sunset at 16:17. The table has the day length for each of the 31 days of the month.
What time does it start to get light in Reykjavik in January?
In mid-January the sky starts to get light at 09:49 in Reykjavik, when the sun is 6° below the horizon, and the sun itself does not rise until 10:58. The “Dawn” column of the table gives that time for every day of the month.
What time does it get dark in Reykjavik in January?
It's not the same time as sunset. In mid-January in Reykjavik the sun sets at 16:17, but there is still light: civil twilight does not end until 17:25, 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 Reykjavik in January?
At no time of day. Not even at midday on January 15 does the UV index reach 3 in Reykjavik, and below that minimum the skin makes no vitamin D, however long you stay out. In January it is the season to mind your diet or consider supplementation.