UV Index in Williston, South Africa
Last updated: January 2, 2025
Average solar exposure data for the current time of the year. Actual values may vary and depend on many factors, such as cloud cover, vegetation cover, surface type, etc.| | 07:00 | 08:00 | 09:00 | 10:00 | 11:00 | 12:00 | 13:00 | 14:00 | 15:00 | 16:00 | 17:00 | 18:00 | 19:00 |
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| UVI | 1 | 3 | 6 | 9 | 13 | 15 | 15 | 13 | 10 | 7 | 3 | 1 | 1 |
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| Exposure | Low | Moderate | High | VeryHigh | Extreme | VeryHigh | High | Moderate | Low |
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| Time to burn | 45 min | 30 min | 25 min | 15 min | 10 min | 15 min | 25 min | 30 min | 45 min |
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UV Index throughout the year in Williston
UV Index (UVI) in Williston. Generated using Copernicus Atmosphere Monitoring Service information. Data for the period from January 2022 to January 2023.| | 07:00 | 08:00 | 09:00 | 10:00 | 11:00 | 12:00 | 13:00 | 14:00 | 15:00 | 16:00 | 17:00 | 18:00 | 19:00 |
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| January | 1 | 3 | 6 | 9 | 13 | 15 | 15 | 13 | 10 | 7 | 3 | 1 | 1 |
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| February | 1 | 2 | 5 | 9 | 12 | 15 | 15 | 14 | 10 | 6 | 3 | 1 | 1 |
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| March | 1 | 2 | 4 | 7 | 10 | 12 | 12 | 11 | 8 | 5 | 2 | 1 | 0 |
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| April | 1 | 1 | 3 | 5 | 7 | 9 | 9 | 8 | 5 | 3 | 1 | 1 | 0 |
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| May | 0 | 1 | 2 | 3 | 5 | 6 | 6 | 5 | 3 | 2 | 1 | 0 | 0 |
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| June | 0 | 1 | 1 | 2 | 4 | 4 | 4 | 4 | 2 | 1 | 1 | 0 | 0 |
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| July | 0 | 1 | 1 | 2 | 4 | 5 | 5 | 4 | 3 | 1 | 1 | 0 | 0 |
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| August | 1 | 1 | 2 | 4 | 6 | 7 | 7 | 6 | 4 | 2 | 1 | 1 | 0 |
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| September | 1 | 2 | 4 | 7 | 9 | 11 | 10 | 9 | 6 | 3 | 1 | 1 | 0 |
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| October | 1 | 3 | 5 | 9 | 11 | 12 | 12 | 10 | 7 | 4 | 2 | 1 | 0 |
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| November | 1 | 3 | 6 | 10 | 12 | 14 | 13 | 11 | 8 | 5 | 2 | 1 | 1 |
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| December | 2 | 4 | 7 | 11 | 14 | 16 | 15 | 13 | 10 | 6 | 3 | 1 | 1 |
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Compare Williston UV Index to other South Africa cities
Williston's solar exposure compared to other cities in South Africa. Generated using Copernicus Atmosphere Monitoring Service information.| | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
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| Cape Town | 14 | 13 | 11 | 8 | 5 | 3 | 4 | 6 | 9 | 11 | 12 | 14 |
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| Durban | 14 | 13 | 12 | 9 | 6 | 4 | 5 | 7 | 9 | 11 | 13 | 15 |
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| Williston | 15 | 15 | 12 | 9 | 6 | 4 | 5 | 7 | 11 | 12 | 14 | 16 |
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| Johannesburg | 15 | 15 | 13 | 10 | 7 | 6 | 6 | 8 | 11 | 12 | 14 | 16 |
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| Pretoria | 16 | 15 | 13 | 10 | 7 | 6 | 6 | 9 | 11 | 13 | 14 | 16 |
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| Soweto | 16 | 15 | 13 | 11 | 7 | 6 | 6 | 8 | 11 | 13 | 15 | 16 |
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Compare Williston's UV Index to other cities in the world
Williston's solar exposure compared to other cities in the world. Generated using Copernicus Atmosphere Monitoring Service information.| | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
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| Oslo | 1 | 2 | 3 | 4 | 5 | 7 | 7 | 5 | 4 | 2 | 1 | 1 |
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| Berlin | 1 | 2 | 4 | 5 | 7 | 8 | 7 | 7 | 5 | 3 | 2 | 1 |
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| London | 1 | 2 | 4 | 5 | 7 | 8 | 8 | 7 | 6 | 4 | 2 | 1 |
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| Toronto | 2 | 4 | 5 | 8 | 9 | 9 | 9 | 9 | 7 | 5 | 3 | 2 |
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| New York City | 3 | 5 | 6 | 8 | 10 | 10 | 9 | 9 | 8 | 6 | 4 | 2 |
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| Athens | 3 | 4 | 6 | 8 | 10 | 10 | 10 | 10 | 8 | 7 | 4 | 3 |
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| Tokyo | 3 | 5 | 8 | 9 | 11 | 11 | 11 | 11 | 10 | 7 | 5 | 4 |
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| Los Angeles | 4 | 6 | 8 | 9 | 10 | 11 | 11 | 10 | 10 | 7 | 5 | 4 |
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| Shanghai | 5 | 6 | 8 | 10 | 10 | 11 | 12 | 11 | 11 | 8 | 6 | 4 |
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| Auckland | 14 | 14 | 10 | 7 | 4 | 3 | 3 | 5 | 7 | 10 | 11 | 13 |
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| Dubai | 6 | 7 | 11 | 11 | 12 | 11 | 10 | 11 | 10 | 8 | 6 | 5 |
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| Sydney | 14 | 13 | 11 | 8 | 5 | 3 | 4 | 6 | 8 | 10 | 12 | 14 |
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| Miami | 6 | 9 | 10 | 12 | 12 | 13 | 12 | 12 | 11 | 10 | 8 | 6 |
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| Williston | 15 | 15 | 12 | 9 | 6 | 4 | 5 | 7 | 11 | 12 | 14 | 16 |
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| Mexico City | 10 | 12 | 14 | 15 | 15 | 14 | 14 | 13 | 14 | 12 | 10 | 8 |
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| Jakarta | 14 | 16 | 16 | 14 | 11 | 10 | 10 | 11 | 13 | 15 | 14 | 13 |
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