UV Index
UV measurements
UV radiation levels vary substantially with time and place. The increased risk of UV damage to the skin and eye during a holiday in a sunny location is often underestimated.
The table below illustrates the changes in UV radiation levels with season and latitude. Maximal UV Index values are given for a range of cities in different countries, calculated for the 21st of each month.
The UV Index Worldwide
| Country (City) | . | J | F | M | A | M | J | J | A | S | O | N | D | |
| Argentine (Buenos Aires) | 35°S | 9 | 9 | 7 | 4 | 3 | 2 | 2 | 4 | 5 | 7 | 9 | 10 | |
| Australia (Darwin) | 13°S | 12 | 13 | 12 | 10 | 8 | 8 | 8 | 10 | 11 | 13 | 12 | 12 | |
| Australia (Melbourne) | 37°S | 8 | 8 | 6 | 4 | 2 | 2 | 2 | 3 | 5 | 6 | 8 | 9 | |
| Australia (Sydney) | 34°S | 9 | 9 | 7 | 5 | 3 | 2 | 3 | 4 | 6 | 7 | 9 | 10 | |
| Brazil (Rio de Janeiro) | 23°S | 12 | 11 | 9 | 7 | 5 | 5 | 5 | 7 | 9 | 10 | 12 | 12 | |
| Canada (Vancouver) | 49°N | 1 | 1 | 3 | 4 | 6 | 7 | 7 | 6 | 4 | 2 | 1 | 1 | |
| Cuba (Havana) | 23°N | 6 | 8 | 9 | 10 | 10 | 11 | 12 | 11 | 10 | 8 | 6 | 5 | |
| Falkland-Islands (Port Stanley) | 58°S | 5 | 4 | 2 | 1 | 0 | 0 | 0 | 1 | 2 | 3 | 5 | 5 | |
| France (Paris) | 49°N | 1 | 1 | 3 | 4 | 6 | 7 | 7 | 6 | 4 | 2 | 1 | 0 | |
| Germany (Berlin) | 52°N | 1 | 1 | 2 | 4 | 5 | 7 | 7 | 5 | 3 | 1 | 1 | 0 | |
| Greece (Iraklion) | 35°N | 3 | 4 | 5 | 8 | 9 | 9 | 10 | 9 | 7 | 4 | 3 | 2 | |
| Japan (TokYo) | 36°N | 2 | 4 | 5 | 8 | 9 | 9 | 10 | 9 | 7 | 4 | 2 | 2 | |
| Kenya (Nairobi) | 1°S | 12 | 13 | 13 | 12 | 11 | 10 | 11 | 11 | 12 | 12 | 12 | 11 | |
| Madagascar (Tananarive) | 19°S | 12 | 12 | 11 | 9 | 7 | 6 | 6 | 8 | 11 | 11 | 12 | 12 | |
| Mozambique (Maputo) | 26°S | 11 | 11 | 9 | 7 | 5 | 4 | 4 | 6 | 8 | 10 | 11 | 11 | |
| Mongolia (Ulan Bator) | 48°N | 1 | 2 | 3 | 5 | 6 | 7 | 8 | 6 | 4 | 2 | 1 | 1 | |
| New Zealand (Wellington) | 42°S | 7 | 7 | 5 | 3 | 1 | 1 | 1 | 2 | 4 | 6 | 7 | 8 | |
| Panama (Panama) | 9°N | 9 | 11 | 12 | 12 | 11 | 11 | 12 | 12 | 12 | 11 | 9 | 9 | |
| Russia (St Petersburg) | 60°N | 0 | 0 | 1 | 3 | 4 | 5 | 5 | 4 | 2 | 1 | 0 | 0 | |
| Singapore (Singapore) | 1°N | 11 | 12 | 13 | 13 | 11 | 11 | 11 | 11 | 12 | 12 | 11 | 10 | |
| South Africa (Cape Town) | 34°S | 9 | 9 | 7 | 5 | 3 | 2 | 3 | 4 | 6 | 7 | 9 | 10 | |
| Spain (Palma de Mallorca) | 39°N | 2 | 3 | 4 | 6 | 8 | 9 | 9 | 8 | 6 | 4 | 2 | 1 | |
| Sri Lanka (Colombo) | 13°N | 8 | 10 | 12 | 12 | 11 | 11 | 12 | 12 | 12 | 10 | 8 | 8 | |
| Thailand (Bangkok) | 14°N | 8 | 10 | 12 | 12 | 11 | 12 | 12 | 12 | 11 | 10 | 8 | 8 | |
| USA (Los Angeles) | 34°N | 3 | 4 | 6 | 8 | 9 | 10 | 10 | 9 | 7 | 5 | 3 | 2 | |
| USA (New York) | 41°N | 2 | 3 | 4 | 6 | 7 | 8 | 9 | 8 | 6 | 3 | 2 | 1 | |
| Vietnam (Hanoi) | 21°N | 6 | 8 | 10 | 11 | 11 | 11 | 12 | 12 | 10 | 8 | 6 | 6 |