Live UV forecast for 30 cities
Paraguay stretches from -27.3318° to -22.3394° latitude (Southern hemisphere), so UV conditions differ a lot from region to region. The clear-sky UV index reaches ≈ 9.1 in Filadelfia (peak in January), while in San Juan Bautista the yearly maximum is only ≈ 8.7. 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 | 5 | 9.1 | 8.9 | 8.4 | 7.4 | 6.5 | 5.8 | 6 | 6.9 | 7.9 | 8.6 | 9 | 9.1 | 9.1 |
| Subtropical | 25 | 8.8 | 8.6 | 7.9 | 6.8 | 5.9 | 5.2 | 5.4 | 6.4 | 7.4 | 8.2 | 8.7 | 8.8 | 8.8 |
Calculated clear-sky noon peaks at the average latitude of each zone. Real values vary with clouds, altitude and ozone.
Using Asuncion as a reference: the UV index reaches 6+ in January, February, March, April, August, 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 Filadelfia around January. Values above this occur only near the equator and in high mountains.
Filadelfia (peak ≈ 9.1), followed by Loma Plata and Pedro Juan Caballero. The mildest sun is in San Juan Bautista (max ≈ 8.7).
In Asuncion and similar latitudes the UV reaches 6+ in January, February, March, April, August, 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.