UV Index in Calheta, Portugal

Last updated: July 2, 2025

Awareness of the UV Index is crucial for everyone living in or visiting Calheta, Portugal. Understanding UV levels helps protect against sunburn and supports long-term skin health, especially as the sun’s intensity can reach high levels throughout the day. In Calheta, with its Csb climate, residents and tourists alike face unique exposure risks, particularly around noon when the UV Index peaks at 11. This knowledge empowers individuals to take proactive measures, ensuring enjoyable and safe outdoor experiences in this beautiful coastal region.

Hourly UV Index in Calheta

The UV Index paints a vivid picture of the day's intensity, starting from a calm 0 at 7:00 AM and gradually building momentum. By 9:00 AM, it reaches a moderate 2, but the real surge comes as the sun climbs higher. At 11:00 AM, the index spikes to 6, followed by an impressive 8 at noon. The peak hits an exhilarating 11 at 2:00 PM—a reminder that sunscreen is a must! The intensity starts to wane thereafter, dropping to 6 at 5:00 PM and easing to 4 by 6:00 PM. As the day winds down, the UV rays fade, settling at a delicate 2 by 7:00 PM. Always stay sun-smart and enjoy the brightness!

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	0	low	45 min
08:00	1	low	45 min
09:00	2	low	45 min
10:00	3	moderate	30 min
11:00	6	high	25 min
12:00	8	very high	15 min
13:00	10	very high	15 min
14:00	11	extreme	10 min
15:00	10	very high	15 min
16:00	9	very high	15 min
17:00	6	high	25 min
18:00	4	moderate	30 min
19:00	2	low	45 min

Monthly UV Index Trends in Calheta

Throughout the year, the UV Index demonstrates significant seasonal variation, with high-risk months primarily occurring from March to August when values reach their peak. Notably, May through July feature extreme UV Index levels (11-12), with a burn time as short as 10 minutes. This indicates that during these months, individuals should take extra precautions, such as wearing sunscreen, protective clothing, and seeking shade during peak sun hours. Conversely, in January and December, with a moderate UV Index of 4, burn times extend to 30 minutes, suggesting lower risk for sunburn. Visitors and residents are encouraged to remain vigilant and adjust their sun exposure habits in accordance with these fluctuations throughout the year to protect their skin health.

Monthly Maximum UV Index for Calheta, Portugal

The monthly maximum UV Index (UVI) represents the highest UV radiation level recorded each month in Calheta. 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 Calheta, 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 Calheta UV Index with Other Portugal Cities

The table above highlights how UV exposure in Calheta 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.

Calheta'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
Calheta	4	6	8	10	11	12	11	11	10	8	6	4