UV Index in Porto Martins, Portugal

Last updated: June 2, 2025

Understanding the UV Index in Porto Martins, Portugal, is crucial for maintaining skin health and preventing sunburn, especially during the peak hours of sunny days. With a Csb climate that offers mild summers but can bring high UV levels, residents and visitors alike need to be vigilant about sun exposure. On typical sunny days, the UV Index can reach its highest at 11 during midday, signaling a very high risk of harm from unprotected sun exposure. By staying informed about UV levels, you can take necessary precautions to protect your skin and enjoy all that Porto Martins has to offer while keeping safety in mind.

Hourly UV Index in Porto Martins

The UV Index throughout the day reveals a dramatic rise in intensity as the sun climbs higher in the sky. Starting off gentle at 1 by 07:00, it gradually increases to 2 by 09:00. The sun's rays peak sharply at 12:00, reaching a sizzling 9, and then escalate to an intense 11 between 13:00 and 14:00. As the afternoon wanes, the index begins to decline, dipping to 8 by 16:00, and continuing to decrease, landing at 3 by 18:00 and finally 2 at 19:00. This data underscores the critical importance of sun safety during the peak hours around noon to early afternoon—be sure to protect your skin when the UV Index is at its highest!

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
09:002low45 min
10:004moderate30 min
11:007high25 min
12:009very high15 min
13:0011extreme10 min
14:0011extreme10 min
15:0010very high15 min
16:008very high15 min
17:005moderate30 min
18:003moderate30 min
19:002low45 min

Monthly UV Index Trends in Porto Martins

As the seasons change, so do the UV index levels, with highest risks typically occurring from April to September. During these months, especially in June when the UV index reaches an extreme level of 11, the burn time is as short as 10 minutes. Visitors and residents should be particularly vigilant during this period, taking necessary precautions such as applying sunscreen with a high SPF, wearing protective clothing, and limiting sun exposure during peak hours. Conversely, during the winter months from January to March, the UV levels are substantially lower, categorized as moderate to high, allowing for safer outdoor activities with burn times ranging from 25 to 30 minutes. It’s crucial to remain aware of these seasonal changes to protect skin health throughout the year.

Monthly Maximum UV Index for Porto Martins, Portugal

The monthly maximum UV Index (UVI) represents the highest UV radiation level recorded each month in Porto Martins. It measures the strength of ultraviolet radiation from the sun and helps assess the risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec3579101110108643
Data source: Statistical UV Index data for Porto Martins, 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 Porto Martins UV Index with Other Portugal Cities

The table above highlights how UV exposure in Porto Martins compares to other major locations across Portugal. This comparison helps travelers and residents better understand regional sun intensity and plan outdoor activities with sun safety in mind.
Porto Martins's solar exposure compared to other cities in Portugal. Generated using Copernicus Atmosphere Monitoring Service information.
 JanFebMarAprMayJunJulAugSepOctNovDec
Braga UVI24689111098642
Porto UVI24689111098642
Amadora UVI356910111098643
Lisbon UVI356910111098643
Setubal UVI356910111098643
Porto Martins3579101110109743