Live UV forecast for 2 cities
US Virgin Islands stretches from 17.7275° to 18.3419° latitude (Northern hemisphere), so UV conditions differ a lot from region to region. The clear-sky UV index reaches ≈ 9.5 in Saint Croix (peak in May), while in Charlotte Amalie the yearly maximum is only ≈ 9.4.
| Zone | Cities | J | F | M | A | M | J | J | A | S | O | N | D | Peak |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Tropical | 2 | 7 | 7.8 | 8.7 | 9.3 | 9.5 | 9.4 | 9.4 | 9.4 | 9.1 | 8.4 | 7.6 | 6.9 | 9.5 |
Calculated clear-sky noon peaks at the average latitude of each zone. Real values vary with clouds, altitude and ozone.
Using Saint Croix as a reference: the UV index reaches 6+ in January, February, March, April, May, June, July, 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 ≈ 9.5 — in Saint Croix around May. Values above this occur only near the equator and in high mountains.
Saint Croix (peak ≈ 9.5), followed by Charlotte Amalie and
Warning: Undefined array key 2 in /home/semencher/domains/uv-index.info/public_html/country-en.php on line 178
Warning: Trying to access array offset on value of type null in /home/semencher/domains/uv-index.info/public_html/country-en.php on line 178
Deprecated: htmlspecialchars(): Passing null to parameter #1 ($string) of type string is deprecated in /home/semencher/domains/uv-index.info/public_html/country-en.php on line 178
. The mildest sun is in Charlotte Amalie (max ≈ 9.4).
In Saint Croix and similar latitudes the UV reaches 6+ in January, February, March, April, May, June, July, August, September, October, November and December: use SPF 30–50+ on sunny days. Protection is advised from UV 3.
No — the local maximum is ≈ 9.5. UV 11+ occurs only near the equator, in deserts and high mountains.