UV Index in Hays, Yemen

Last updated: July 2, 2025

Understanding the UV Index is crucial for residents and visitors in Hays, Yemen, where the subtropical climate can lead to significant sun exposure. Knowing the daily UV levels helps in preventing sunburn and protecting skin health, especially during peak hours when the index reaches a maximum of 10 around midday. With clear skies typical of the BWh climate zone, Hays experiences increased UV radiation risks that necessitate vigilance when enjoying outdoor activities. Keep an eye on the UV Index to ensure you stay safe and healthy under the sun!

Hourly UV Index in Hays

As the sun rises, the UV Index begins its ascent, starting at a modest 1 by 07:00. By 08:00, it climbs to 2, but the intensity truly peaks from 10:00 to 13:00, reaching a soaring 10—the time to be most cautious under the sun! As afternoon approaches, the UV Index lightly dips to 8 at 14:00, before gradually declining through the evening. At 16:00, it falls to 3, and by 19:00, it's nearly gone, resting at 0. Stay protected during peak hours, especially when the index hits its zenith, ensuring a safe and enjoyable day outdoors!

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	2	low	45 min
09:00	5	moderate	30 min
10:00	7	high	25 min
11:00	10	very high	15 min
12:00	10	very high	15 min
13:00	10	very high	15 min
14:00	8	very high	15 min
15:00	5	moderate	30 min
16:00	3	moderate	30 min
17:00	1	low	45 min
18:00	1	low	45 min
19:00	0	low	45 min

Monthly UV Index Trends in Hays

The UV Index shows distinct seasonal variations, with the highest exposure levels occurring from February to April, when the index reaches up to 13 and is categorized as extreme. During these months, the burn time is notably short at just 10 minutes, indicating a critical need for sun protection. Conversely, from June to September, the UV Index remains high but drops to a very high classification, with burn times extending to 15 minutes. The high-risk months for UV exposure are thus February to April and August, when sun safety measures should be prioritized for both visitors and residents. It is advisable to wear protective clothing, use sunscreen, and seek shade during peak hours to minimize the risk of skin damage.

Monthly Maximum UV Index for Hays, Yemen

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

The table above highlights how UV exposure in Hays compares to other major locations across Yemen. This comparison helps travelers and residents better understand regional sun intensity and plan outdoor activities with sun safety in mind.

Hays's solar exposure compared to other cities in Yemen. Generated using Copernicus Atmosphere Monitoring Service information.
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Al Hudaydah UVI	9	10	11	13	12	10	9	9	9	9	8	8
Hays	10	11	12	13	12	10	10	12	10	10	9	9
Aden UVI	10	11	13	14	13	10	11	12	10	10	9	9
Taiz UVI	10	12	13	14	13	10	12	12	11	11	10	9
Mukalla UVI	11	12	13	14	14	12	12	12	12	11	10	9
Sanaa UVI	12	13	15	16	15	14	13	13	14	13	11	10