Vitamin DGlobal Solar Explorer

Vitamin D from the sun in Montevideo

In Montevideo you can synthesize vitamin D from August to May.

From June to July synthesis isn't possible — this is when a supplement can help.

More precisely: July 18 – May 30.

Year-round profile in Montevideo

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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 17:00, about 5 min for 1000 IU.

Estimated for Fitzpatrick type III skin, arms and face exposed, clear sky.

When to supplement in Montevideo

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.

Calculate my window in Montevideo

Frequently asked questions about vitamin D in Montevideo

Can I get vitamin D from the sun in winter in Montevideo?
In Montevideo you can synthesize vitamin D from August to May.
How many minutes of sun do I need in Montevideo?
In summer, about 7 minutes with arms and face exposed is enough for 1000 IU (Fitzpatrick type III skin, clear sky).
Built by Javier Aguilar