Live UV forecast for 106 cities
Madagascar stretches from -25.3° to -12.3173° latitude (Southern hemisphere), so UV conditions differ a lot from region to region. The clear-sky UV index reaches ≈ 9.9 in Antsiranana (peak in February), while in Tsiombe the yearly maximum is only ≈ 8.9. 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 | 95 | 9.4 | 9.4 | 9 | 8.1 | 7.3 | 6.7 | 6.9 | 7.7 | 8.5 | 9.2 | 9.4 | 9.4 | 9.4 |
| Subtropical | 11 | 8.9 | 8.7 | 8.1 | 7 | 6.1 | 5.4 | 5.6 | 6.6 | 7.5 | 8.4 | 8.8 | 8.9 | 8.9 |
Calculated clear-sky noon peaks at the average latitude of each zone. Real values vary with clouds, altitude and ozone.
Using Antananarivo 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 ≈ 9.9 — in Antsiranana around February. Values above this occur only near the equator and in high mountains.
Antsiranana (peak ≈ 9.9), followed by Antsohimbondrona and Ambanja. The mildest sun is in Tsiombe (max ≈ 8.9).
In Antananarivo 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 ≈ 9.9. UV 11+ occurs only near the equator, in deserts and high mountains.