UV Index in Mahajanga, Madagascar

Last updated: July 2, 2025

Understanding the UV Index is crucial for residents and visitors in Mahajanga, Madagascar, where the tropical climate can lead to intense sun exposure. The ability to gauge UV levels helps prevent sunburn and protect skin health, especially when the UV Index peaks at a striking 9 around midday. With Mahajanga's sun-soaked days typical of an Aw climate zone, being aware of these levels is essential to enjoying the beautiful outdoors safely. Whether you're basking on the beaches or exploring the local attractions, knowing how to shield yourself from harmful UV radiation will ensure a delightful and healthy experience.

Hourly UV Index in Mahajanga

As the sun rises, the UV Index begins to climb steadily, hitting a low of 1 at 7:00 AM. By 8:00 AM, it nudges up to 2, signaling the start of a brighter day. The index peaks at 9 at 12:00 PM, marking the sun’s most intense rays and urging everyone outside to take precautions. As the afternoon unfolds, the index gradually declines—dropping to 8 by 1:00 PM, then easing to 3 by 3:00 PM, before plummeting to 0 after 6:00 PM. This data highlights the crucial midday hours when UV exposure is at its highest, emphasizing the need for sun protection during this window. Be sun-smart and enjoy your day!

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

Monthly UV Index Trends in Mahajanga

The UV Index shows a consistent pattern of extreme and very high exposure from January through April and resurges towards the end of the year. The high-risk months are marked by significantly elevated UV values, particularly from January to April, with a peak UV Index of 16, indicating extreme risk and a burn time of just 10 minutes; this level of risk returns in August through November. Visitors and residents are advised to take necessary precautions such as wearing protective clothing, applying sunscreen with high SPF, and seeking shade, especially during midday hours when UV exposure is most intense. Remember, the potential harm from UV radiation remains high throughout the year, particularly in these critical months, so vigilance is essential to protect your skin health.

Monthly Maximum UV Index for Mahajanga, Madagascar

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

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

Mahajanga's solar exposure compared to other cities in Madagascar. Generated using Copernicus Atmosphere Monitoring Service information.
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Toamasina UVI	16	16	15	12	9	7	8	10	12	12	13	15
Fianarantsoa UVI	17	17	15	12	9	7	8	10	12	13	14	16
Mahajanga	16	16	15	13	10	8	9	11	12	12	13	15
Antananarivo UVI	17	17	15	12	10	8	9	11	13	13	14	16
Antsirabe UVI	17	17	16	13	10	8	9	11	13	13	14	16