Live UV forecast for 1 cities
Jersey stretches from 49.188° to 49.188° latitude (Northern hemisphere), so UV conditions differ a lot from region to region. The clear-sky UV index reaches ≈ 7.4 in Saint Helier (peak in June), while in Saint Helier the yearly maximum is only ≈ 7.4.
| Zone | Cities | J | F | M | A | M | J | J | A | S | O | N | D | Peak |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Temperate | 1 | 2 | 3 | 4.5 | 6 | 6.9 | 7.4 | 7.2 | 6.4 | 5.3 | 3.9 | 2.7 | 1.9 | 7.4 |
Calculated clear-sky noon peaks at the average latitude of each zone. Real values vary with clouds, altitude and ozone.
Using Saint Helier as a reference: the UV index reaches 6+ in April, 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 ≈ 7.4 — in Saint Helier around June. Values above this occur only near the equator and in high mountains.
Saint Helier (peak ≈ 7.4), followed by
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. The mildest sun is in Saint Helier (max ≈ 7.4).
In Saint Helier and similar latitudes the UV reaches 6+ in April, May, June, July and August: use SPF 30–50+ on sunny days. Protection is advised from UV 3.
No — the local maximum is ≈ 7.4. UV 11+ occurs only near the equator, in deserts and high mountains.