UV Index in Trieste, Italy

Last updated: June 2, 2025

Understanding the UV Index in Trieste, Italy, is crucial for maintaining skin health and preventing sunburn, especially during the warmer months. As this beautiful coastal city experiences a temperate climate (Cfb), residents and visitors alike should be aware of the varying UV levels throughout the day. With peak readings reaching as high as 9 around noon, knowing when to seek shade or apply sunscreen can make a significant difference in protecting your skin from harmful UV radiation. Whether you're lounging on the waterfront or exploring the charming streets, staying informed about the UV Index helps ensure a safer, enjoyable experience under the sun.

Hourly UV Index in Trieste

The UV Index rises steadily throughout the morning, with a low of 1 at 07:00, gradually climbing to 9 between 12:00 and 13:00, marking the peak of sun intensity. As the afternoon progresses, the index begins to decline, dropping to 8 at 14:00 and further easing to 7 by 15:00. As the sun sets, the UV Index continues to decrease, landing back at a mild 1 by 19:00. This data highlights the importance of protective measures during peak hours, especially between 11:00 and 13:00, when sun exposure poses the highest risk.

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
08:002low45 min
09:003moderate30 min
10:005moderate30 min
11:007high25 min
12:009very high15 min
13:009very high15 min
14:008very high15 min
15:007high25 min
16:005moderate30 min
17:003moderate30 min
18:002low45 min
19:001low45 min

Monthly UV Index Trends in Trieste

Throughout the year, the UV Index fluctuates markedly, with high-risk months typically occurring from April to August. During this period, the UV Index regularly reaches very high levels, particularly in May, June, and July, where a burn time of just 15 minutes indicates an increased risk of skin damage. As the year transitions towards autumn and winter, the UV Index drops to moderate and then low, with safer exposure times of 30 to 45 minutes in effect during the colder months. Visitors and residents are advised to take precautions during the high-risk months by wearing sunscreen, protective clothing, and seeking shade, especially during midday hours when the sun's rays are strongest. Staying informed about the daily UV Index can help ensure safe and enjoyable outdoor activities year-round.

Monthly Maximum UV Index for Trieste, Italy

The monthly maximum UV Index (UVI) represents the highest UV radiation level recorded each month in Trieste. It measures the strength of ultraviolet radiation from the sun and helps assess the risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec235689987432
Data source: Statistical UV Index data for Trieste, 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 Trieste UV Index with Other Italy Cities

The table above highlights how UV exposure in Trieste compares to other major locations across Italy. This comparison helps travelers and residents better understand regional sun intensity and plan outdoor activities with sun safety in mind.
Trieste's solar exposure compared to other cities in Italy. Generated using Copernicus Atmosphere Monitoring Service information.
 JanFebMarAprMayJunJulAugSepOctNovDec
Trieste235689987532
Milan UVI235689986532
Turin UVI2367810997532
Rome UVI34578101097542
Naples UVI34679101098642
Palermo UVI35689101098743