Live UV forecast for 328 cities
Argentina stretches from -54.8108° to -22.049° latitude (Southern hemisphere), so UV conditions differ a lot from region to region. The clear-sky UV index reaches ≈ 9.1 in General Mosconi (peak in January), while in Ushuaia the yearly maximum is only ≈ 6.7. As in the whole Southern hemisphere, the sun is strongest from November to February — opposite to Europe and North America.
| Zone | Cities | J | F | M | A | M | J | J | A | S | O | N | D | Peak |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Tropical | 7 | 9.1 | 8.9 | 8.4 | 7.3 | 6.4 | 5.8 | 6 | 6.9 | 7.8 | 8.6 | 9 | 9.1 | 9.1 |
| Subtropical | 242 | 8.3 | 7.9 | 7.1 | 5.9 | 4.8 | 4.1 | 4.4 | 5.4 | 6.4 | 7.5 | 8.1 | 8.3 | 8.3 |
| Temperate | 79 | 7.9 | 7.4 | 6.3 | 4.9 | 3.8 | 3 | 3.3 | 4.3 | 5.5 | 6.8 | 7.6 | 8 | 8 |
Calculated clear-sky noon peaks at the average latitude of each zone. Real values vary with clouds, altitude and ozone.
Using Buenos Aires as a reference: the UV index reaches 6+ in January, February, March, September, October, November and December. 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 ≈ 9.1 — in General Mosconi around January. Values above this occur only near the equator and in high mountains.
General Mosconi (peak ≈ 9.1), followed by Profesor Salvador Mazza and Tartagal. The mildest sun is in Ushuaia (max ≈ 6.7).
In Buenos Aires and similar latitudes the UV reaches 6+ in January, February, March, September, October, November and December: use SPF 30–50+ on sunny days. Protection is advised from UV 3.
No — the local maximum is ≈ 9.1. UV 11+ occurs only near the equator, in deserts and high mountains.