UV Index in Port Louis, Mauritius

Last updated: June 2, 2025

Understanding the UV Index is essential for residents and visitors in Port Louis, Mauritius, where the tropical climate brings both beautiful sunshine and heightened risks of UV exposure. As the UV levels can soar to a maximum of 7 during midday hours, it’s crucial to recognize how these rays can impact your skin, leading to sunburn and long-term health issues like skin cancer. By staying informed about the daily UV Index and taking appropriate precautions, you can protect your skin while enjoying the outdoor beauty of Port Louis. With its inviting beaches and vibrant landscapes, being aware of UV levels is your first step towards safe sun exposure in this enchanting destination.

Hourly UV Index in Port Louis

At dawn, the UV Index starts off low, with a maximum of 1 at 07:00 and 08:00. As the sun rises higher, it reaches 3 by 09:00, before climbing to a peak of 7 at 12:00. This midday intensity signifies a need for sun protection, especially during the height of the day when UV exposure is most potent. The index begins to decline in the afternoon, dropping to 5 at 14:00 and settling back to 1 by 17:00. By 18:00 and into the evening, the UV Index sharply drops to 0, marking a safe time to enjoy outdoor activities without the risk of sunburn. Stay sun-safe!

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.
TimeUVICategoryTime to Burn
07:001low45 min
08:001low45 min
09:003moderate30 min
10:005moderate30 min
11:006high25 min
12:007high25 min
13:006high25 min
14:005moderate30 min
15:003moderate30 min
16:001low45 min
17:001low45 min
18:000low45 min
19:000low45 min

Monthly UV Index Trends in Port Louis

Throughout the year, the region experiences significant fluctuations in UV index levels, peaking during the winter and early spring months. The highest risk months for UV exposure are January through April, where the UV Index consistently measures 16 (extreme) with a rapid burn time of just 10 minutes. Even as we transition into summer, May marks a reduction to a UV Index of 9 (very high), extending burn time to 15 minutes, while June offers a slight reprieve at 7 (high) for 25 minutes. However, July and August resurge to very high levels of UV exposure, warranting caution. As the year closes, October to December exhibits another surge in risk, returning to extreme levels with an index of 13 to 15 and a burn time of 10 minutes. For residents and visitors alike, it is crucial to practice sun safety year-round, particularly during these higher-risk months, by wearing protective clothing, applying sunscreen, and minimizing direct sun exposure during peak hours.

Monthly Maximum UV Index for Port Louis, Mauritius

The monthly maximum UV Index (UVI) represents the highest UV radiation level recorded each month in Port Louis. It measures the strength of ultraviolet radiation from the sun and helps assess the risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec161614129781012131415
Data source: Statistical UV Index data for Port Louis, based on information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

Compare Port Louis UV Index with Other Mauritius Cities

The table above highlights how UV exposure in Port Louis compares to other major locations across Mauritius. This comparison helps travelers and residents better understand regional sun intensity and plan outdoor activities with sun safety in mind.
Port Louis's solar exposure compared to other cities in Mauritius. Generated using Copernicus Atmosphere Monitoring Service information.
 JanFebMarAprMayJunJulAugSepOctNovDec
Port Louis161614129781011131415
Quatre Bornes UVI161614129781011131415
Curepipe UVI161614129781011131415
Vacoas UVI161614129781011131415
Beau Bassin-Rose Hill UVI161614129781011131415