UV Index in Negrelos, Portugal

Last updated: July 2, 2025

Understanding the UV Index in Negrelos, Portugal is essential for protecting your skin and overall health. With the climate characterized as Csb, residents and visitors alike experience distinct UV exposure risks throughout the day. By gaining knowledge of the UV levels, particularly during the peak hours from 11 AM to 2 PM when the index can soar to 10, you can effectively prevent sunburn and reduce long-term skin damage. Stay informed and take proactive measures to enjoy the sun safely while appreciating the beauty of Negrelos!

Hourly UV Index in Negrelos

The UV Index peaks dramatically as the day unfolds, starting from a mild 1 at 7:00 AM and rising steadily. By 10:00 AM, it reaches 5, indicating more significant exposure risk, but it's not until 11:00 AM that it surges to 7—the sun is truly shining bright! The intensity escalates to a maximum of 10 at both 1:00 PM and 2:00 PM, marking the hours when sun protection is most crucial. As the afternoon wanes, it gradually dips, settling at 4 by 5:00 PM and returning to a safer 1 by 7:00 PM. It's essential to stay mindful of this UV trend, especially during peak hours, to protect your skin and enjoy the sunshine safely!

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	3	moderate	30 min
10:00	5	moderate	30 min
11:00	7	high	25 min
12:00	8	very high	15 min
13:00	10	very high	15 min
14:00	10	very high	15 min
15:00	8	very high	15 min
16:00	7	high	25 min
17:00	4	moderate	30 min
18:00	3	moderate	30 min
19:00	1	low	45 min

Monthly UV Index Trends in Negrelos

As the seasons change, so do the UV levels, which significantly impact skin safety for both visitors and residents. The UV Index starts low in January (2) and December (2), indicating a low risk for sunburn. However, as we move into the spring and summer months, particularly from March (6) to August (9), the risk escalates, with April (8) and the peak in June (11) classified as extreme. The high-risk months are primarily from April through August, where burn times are notably short, especially in June, with only 10 minutes until skin damage occurs. It is crucial for individuals during these months to take necessary precautions, such as wearing sunscreen, protective clothing, and limiting sun exposure, especially during peak hours. As fall approaches, the UV Index gradually decreases, but awareness remains essential for safe outdoor activities.

Monthly Maximum UV Index for Negrelos, Portugal

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

The table above highlights how UV exposure in Negrelos 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.

Negrelos'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
Negrelos	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