Live UV forecast for 179 cities
Portugal stretches from 32.6448° to 42.0789° latitude (Northern hemisphere), so UV conditions differ a lot from region to region. The clear-sky UV index reaches ≈ 8.3 in Camara de Lobos (peak in June), while in Vilar de Andorinho the yearly maximum is only ≈ 7.9.
| Zone | Cities | J | F | M | A | M | J | J | A | S | O | N | D | Peak |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Subtropical | 5 | 4.2 | 5.2 | 6.5 | 7.6 | 8.1 | 8.3 | 8.3 | 7.9 | 7.2 | 6 | 4.9 | 4.1 | 8.3 |
| Temperate | 174 | 3.3 | 4.3 | 5.7 | 7 | 7.7 | 8 | 7.9 | 7.3 | 6.5 | 5.2 | 4 | 3.1 | 8 |
Calculated clear-sky noon peaks at the average latitude of each zone. Real values vary with clouds, altitude and ozone.
Using Lisbon as a reference: the UV index reaches 6+ in April, May, June, July, August and September. In the sunniest zones (see table) SPF 30–50+ is needed almost year-round; in the mildest — only in late spring and summer.
The calculated clear-sky maximum is ≈ 8.3 — in Camara de Lobos around June. Values above this occur only near the equator and in high mountains.
Camara de Lobos (peak ≈ 8.3), followed by Canico and Funchal. The mildest sun is in Vilar de Andorinho (max ≈ 7.9).
In Lisbon and similar latitudes the UV reaches 6+ in April, May, June, July, August and September: use SPF 30–50+ on sunny days. Protection is advised from UV 3.
No — the local maximum is ≈ 8.3. UV 11+ occurs only near the equator, in deserts and high mountains.