Live UV forecast for 3 cities
Luxembourg stretches from 49.4806° to 49.6098° latitude (Northern hemisphere), so UV conditions differ a lot from region to region. The clear-sky UV index reaches ≈ 7.3 in Dudelange (peak in June), while in Luxembourg the yearly maximum is only ≈ 7.3.
| Zone | Cities | J | F | M | A | M | J | J | A | S | O | N | D | Peak |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Temperate | 3 | 1.9 | 3 | 4.4 | 5.9 | 6.8 | 7.3 | 7.2 | 6.4 | 5.3 | 3.9 | 2.6 | 1.8 | 7.3 |
Calculated clear-sky noon peaks at the average latitude of each zone. Real values vary with clouds, altitude and ozone.
Using Luxembourg as a reference: the UV index reaches 6+ in May, June, July and August. 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 ≈ 7.3 — in Dudelange around June. Values above this occur only near the equator and in high mountains.
Dudelange (peak ≈ 7.3), followed by Esch-sur-Alzette and Luxembourg. The mildest sun is in Luxembourg (max ≈ 7.3).
In Luxembourg and similar latitudes the UV reaches 6+ in May, June, July and August: use SPF 30–50+ on sunny days. Protection is advised from UV 3.
No — the local maximum is ≈ 7.3. UV 11+ occurs only near the equator, in deserts and high mountains.