Live UV forecast for 1 cities
Sao Tome and Principe stretches from 0.3376° to 0.3376° latitude (Northern hemisphere), so UV conditions differ a lot from region to region. The clear-sky UV index reaches ≈ 10.9 in Sao Tome (peak in March), while in Sao Tome the yearly maximum is only ≈ 10.9.
| Zone | Cities | J | F | M | A | M | J | J | A | S | O | N | D | Peak |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Equatorial | 1 | 10.1 | 10.6 | 10.9 | 10.7 | 10.3 | 10 | 10.1 | 10.6 | 10.8 | 10.8 | 10.4 | 10 | 10.9 |
Calculated clear-sky noon peaks at the average latitude of each zone. In the equatorial belt the UV stays high all year round, with two maxima around the equinoxes. Real values vary with clouds, altitude and ozone.
Using Sao Tome 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 ≈ 10.9 — in Sao Tome around March. Values above this occur only near the equator and in high mountains.
Sao Tome (peak ≈ 10.9), followed by
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and
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. The mildest sun is in Sao Tome (max ≈ 10.9).
In Sao Tome 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 ≈ 10.9. UV 11+ occurs only near the equator, in deserts and high mountains.