UV Index in Tonga, Cameroon

Last updated: June 2, 2025

Understanding the UV Index is crucial for residents and visitors in Tonga, where the tropical climate brings intense sunlight and varying UV exposure throughout the day. Recognizing and monitoring UV levels not only helps in preventing sunburn but also plays a vital role in maintaining long-term skin health. With peak UV Index readings reaching 12 around noon, the risks associated with sun exposure are significant—making it essential to stay informed and take protective measures. Being aware of these levels can help you enjoy the sun while safeguarding your skin from its harmful effects.

Hourly UV Index in Tonga

The UV Index today paints a vivid picture of the sun's intensity throughout the hours. Starting at a mild 1 by 07:00, it gradually rises to 12 at 12:00, marking the peak of solar strength. As the clock strikes 11:00, sun-seekers should be cautious, with the index reaching 11. After this zenith, it begins to dip, descending to 6 by 15:00 and tapering off to a gentle 1 by 17:00. Finally, as daylight wanes, the index drops to 0 by 19:00, signaling the day's end. Stay protected during the peak hours, especially between 10:00 and 14:00, when the sun’s rays are most formidable! 🌞

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	8	very high	15 min
11:00	11	extreme	10 min
12:00	12	extreme	10 min
13:00	11	extreme	10 min
14:00	9	very high	15 min
15:00	6	high	25 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 Tonga

The UV Index shows significant seasonal fluctuations, with extreme levels persisting from January through November, indicating that precautions should be taken year-round. The months of March through May, with UV Index values reaching as high as 14, represent the peak risk for skin damage, where even short exposure can result in burns in as little as 10 minutes. While there is a slight reduction in the UV Index during the summer months of June and July, it remains high at 12, emphasizing the need for vigilance. As fall approaches, UV levels stabilize but still stay elevated, particularly in September and October, at 13. Visitors and residents are strongly advised to utilize sunscreen, wear protective clothing, and seek shade during peak sunlight hours, especially between late winter and early autumn, to reduce their risk of skin damage.

Monthly Maximum UV Index for Tonga, Cameroon

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

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

Tonga's solar exposure compared to other cities in Cameroon. Generated using Copernicus Atmosphere Monitoring Service information.
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Douala UVI	10	11	12	14	13	11	11	12	12	12	11	10
Kousseri UVI	10	12	13	12	12	12	13	13	13	11	10	9
Garoua UVI	11	12	12	13	13	12	13	13	14	12	10	10
Yaounde UVI	11	12	13	15	13	12	11	12	13	13	11	11
Tonga	11	12	13	14	14	12	12	13	13	13	11	10
Bamenda UVI	12	13	14	14	14	13	13	13	13	13	12	11