Seoul
Vitamin D from the sun in Seoul
9 months of sun
In Seoul you can synthesize vitamin D from February to October.
From November to January synthesis isn't possible — this is when a supplement can help.
Seoul: we'll tell you the days you can make vitamin D.
Loading notifications…Today's sun in Seoul
Today's sunrise, sunset, golden hour and day length.
Year-round profile in Seoul
Daily hours with enough sun to synthesize vitamin D across the year.
Seasonal windows
- March: between 10:00 and 16:00, about 10 min for 1000 IU.
- June: between 09:00 and 17:00, about 6 min for 1000 IU.
- September: between 10:00 and 16:00, about 8 min for 1000 IU.
- December: synthesis isn't possible.
Estimated for Fitzpatrick type III skin, arms and face exposed, clear sky.
When to supplement in Seoul
During the months without solar synthesis, vitamin D comes only from food or a supplement. It is usually taken as D3, often with magnesium — which the body needs to activate it — and vitamin K (as K2), which contributes to the maintenance of normal bones.
More about supplementsSunrise and sunset by month in Seoul
How sunrise, sunset and day length change over the year.
| Month | Sunrise | Sunset | Day length |
|---|---|---|---|
| 07:46 | 17:36 | 9 h 50 min | |
| 07:24 | 18:09 | 10 h 45 min | |
| 06:46 | 18:37 | 11 h 51 min | |
| 05:59 | 19:06 | 13 h 07 min | |
| 05:23 | 19:34 | 14 h 11 min | |
| 05:10 | 19:55 | 14 h 45 min | |
| 05:22 | 19:53 | 14 h 31 min | |
| 05:48 | 19:24 | 13 h 36 min | |
| 06:16 | 18:38 | 12 h 22 min | |
| 06:43 | 17:52 | 11 h 09 min | |
| 07:15 | 17:20 | 10 h 05 min | |
| 07:41 | 17:15 | 9 h 35 min |
Approximate values for mid-month (the 15th).
Frequently asked questions about vitamin D in Seoul
- Can I get vitamin D from the sun in winter in Seoul?
- In Seoul you can synthesize vitamin D from February to October.
- How many minutes of sun do I need in Seoul?
- In summer, about 10 minutes with arms and face exposed is enough for 1000 IU (Fitzpatrick type III skin, clear sky).
- What time does the sun rise and set in Seoul?
- It shifts with the seasons: in June the sun rises around 05:10 and sets around 19:55; in December it rises around 07:41 and sets around 17:15.
- What is the longest day of the year in Seoul?
- Longest day: June, with about 15 h of daylight. Shortest day: December, with about 10 h.
- When is golden hour in Seoul?
- It's roughly the last hour before sunset: in June it starts around 19:16 and in December around 16:34.