Buenos Aires
Vitamin D from the sun in Buenos Aires
11 months of sun
In Buenos Aires you can synthesize vitamin D from July to May.
From June to June synthesis isn't possible — this is when a supplement can help.
Buenos Aires: we'll tell you the days you can make vitamin D.
Loading notifications…Today's sun in Buenos Aires
Today's sunrise, sunset, golden hour and day length.
Year-round profile in Buenos Aires
Daily hours with enough sun to synthesize vitamin D across the year.
Seasonal windows
- March: between 10:00 and 17:00, about 7 min for 1000 IU.
- June: synthesis isn't possible.
- September: between 10:00 and 16:00, about 8 min for 1000 IU.
- December: between 09:00 and 18:00, about 5 min for 1000 IU.
Estimated for Fitzpatrick type III skin, arms and face exposed, clear sky.
When to supplement in Buenos Aires
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 Buenos Aires
How sunrise, sunset and day length change over the year.
| Month | Sunrise | Sunset | Day length |
|---|---|---|---|
| 05:56 | 20:10 | 14 h 14 min | |
| 06:26 | 19:50 | 13 h 23 min | |
| 06:51 | 19:15 | 12 h 24 min | |
| 07:16 | 18:32 | 11 h 16 min | |
| 07:40 | 18:00 | 10 h 20 min | |
| 07:58 | 17:49 | 9 h 51 min | |
| 07:58 | 18:01 | 10 h 03 min | |
| 07:32 | 18:23 | 10 h 51 min | |
| 06:50 | 18:46 | 11 h 56 min | |
| 06:08 | 19:10 | 13 h 02 min | |
| 05:39 | 19:38 | 14 h 00 min | |
| 05:35 | 20:03 | 14 h 28 min |
Approximate values for mid-month (the 15th).
Frequently asked questions about vitamin D in Buenos Aires
- Can I get vitamin D from the sun in winter in Buenos Aires?
- In Buenos Aires you can synthesize vitamin D from July to May.
- How many minutes of sun do I need in Buenos Aires?
- In summer, about 7 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 Buenos Aires?
- It shifts with the seasons: in June the sun rises around 07:58 and sets around 17:49; in December it rises around 05:35 and sets around 20:03.
- What is the longest day of the year in Buenos Aires?
- Longest day: December, with about 14 h of daylight. Shortest day: June, with about 10 h.
- When is golden hour in Buenos Aires?
- It's roughly the last hour before sunset: in June it starts around 17:10 and in December around 19:26.