Vitamin D in Greece in March: sun, UV and what to expect

Too cold Too cold here in March: afternoon highs average only 17.3°C, which is too chilly for sunbathing in light clothing. Try another month or a warmer destination.

6.8 hsun window (UV 2.5+)

5.7peak UV Index

9 minto a full dose

17°Cafternoon high

9/30rainy days

30/30sunny days

Open Greece for March on the map Find stays in Greece

How long in the sun in March?

If you travel anyway, plan your sun session around midday (roughly 11:00 to 15:00), when the UV Index peaks at about 5.7. With about a quarter of your skin bare, a full dose takes around 9 minutes for skin type III at age 30, and about 18 minutes at age 65.
Stop well before your skin turns pink. At this UV level skin type III can start to burn after about 35 minutes of midday sun, so cover up, find shade and use SPF 30+ on skin that stays out.
Water, sand and light surfaces reflect UV, so at the beach you get a little more sun than the number suggests, for the good and the bad.

Skin type	Full dose, age 30	Full dose, age 65	Time to burn
Type I	6 min	12 min	23 min
Type II	8 min	15 min	29 min
Type III	9 min	18 min	35 min
Type IV	14 min	26 min	53 min
Type V	19 min	35 min	70 min
Type VI	31 min	58 min	1.9 h

Minutes at midday for about 1,000 IU of vitamin D with a quarter of the body bare, at Kefalonia, the median coastal place. Time to burn is the time to reach one minimal erythemal dose and does not depend on age. A rough planning guide, not medical advice.

Places in Greece in March

Place	Rating	Sun window	Full dose	Afternoon high	Rainy days
Chania	Too cold	7.0 h	9 min	18°C	3/30
Rethymno	Too cold	6.8 h	9 min	18°C	5/30
Heraklion	Too cold	6.4 h	9 min	19°C	5/30
Milos	Too cold	6.8 h	9 min	18°C	4/30
Zakynthos	Too cold	6.9 h	9 min	18°C	7/30
Rhodes	Too cold	6.7 h	9 min	19°C	5/30
Santorini	Too cold	6.8 h	10 min	18°C	6/30
Kos	Too cold	6.6 h	10 min	19°C	7/30
Paros	Too cold	6.5 h	10 min	18°C	6/30
Ios	Too cold	6.7 h	10 min	18°C	6/30
Kefalonia	Too cold	6.8 h	9 min	17°C	9/30
Athens	Too cold	6.6 h	10 min	19°C	8/30
Mykonos	Too cold	6.4 h	10 min	17°C	6/30
Naxos	Too cold	6.6 h	10 min	18°C	4/30
Nafplio	Too cold	6.7 h	10 min	19°C	9/30
Hydra	Too cold	6.6 h	10 min	19°C	9/30
Skiathos	Too cold	6.0 h	10 min	16°C	7/30
Lefkada	Too cold	6.3 h	10 min	16°C	13/30
Halkidiki	Too cold	5.9 h	11 min	17°C	9/30
Corfu	Too cold	5.6 h	11 min	17°C	13/30

Other months in Greece

Best months: May to October. Full Greece guide

Other sunny places in March

All best places for vitamin D in March