UV Index in Horta, Portugal

Last updated: June 2, 2025

Understanding the UV Index is crucial for residents and visitors in Horta, Portugal, especially given its mild Cfb climate which presents unique sun exposure risks. Being aware of UV levels helps ensure effective sunburn prevention and promotes better skin health, allowing you to enjoy the outdoors safely. With peak UV Index levels soaring to 11 around midday, it's vital to recognize the potential for harm and take proactive measures to protect your skin. Be informed, stay safe, and make the most of the beautiful beaches and landscapes that Horta has to offer!

Hourly UV Index in Horta

Experience the daily rise and fall of the UV Index with remarkable clarity! As the sun climbs higher in the sky, the UV Index starts at a mild 1 at 07:00 and 08:00, making it a safe time for morning activities. However, watch as it surges to 4 by 10:00, reaching its peak at a striking 11 between 13:00 and 14:00—a reminder to embrace sun protection. The afternoon sun commands respect as it gradually dips to 10 at 15:00, before easing into the evening with readings of 8 at 16:00, 6 at 17:00, and finally settling to a gentle 2 by 19:00. Stay safe and enjoy your time under the sun!

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.
Time	UVI	Category	Time to Burn
07:00	1	low	45 min
08:00	1	low	45 min
09:00	2	low	45 min
10:00	4	moderate	30 min
11:00	7	high	25 min
12:00	9	very high	15 min
13:00	11	extreme	10 min
14:00	11	extreme	10 min
15:00	10	very high	15 min
16:00	8	very high	15 min
17:00	6	high	25 min
18:00	3	moderate	30 min
19:00	2	low	45 min

Monthly UV Index Trends in Horta

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 Horta, Portugal

The monthly maximum UV Index (UVI) represents the highest UV radiation level recorded each month in Horta. It measures the strength of ultraviolet radiation from the sun and helps assess the risk of sunburn and UV-related health issues.

Data source: Statistical UV Index data for Horta, 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 Horta UV Index with Other Portugal Cities

The table above highlights how UV exposure in Horta 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.

Horta's solar exposure compared to other cities in Portugal. Generated using Copernicus Atmosphere Monitoring Service information.
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Braga UVI	2	4	6	8	9	11	10	9	8	6	4	2
Porto UVI	2	4	6	8	9	11	10	9	8	6	4	2
Amadora UVI	3	5	6	9	10	11	10	9	8	6	4	3
Lisbon UVI	3	5	6	9	10	11	10	9	8	6	4	3
Setubal UVI	3	5	6	9	10	11	10	9	8	6	4	3
Horta	3	5	7	9	10	11	10	10	9	7	4	3