UV Index in Vaini, Tonga

Last updated: June 2, 2025

Understanding the UV Index in Vaini, Tonga is essential for safeguarding your health and enjoying the beautiful outdoors. With high UV levels peaking at 7 around midday, awareness of UV exposure can help prevent sunburn and long-term skin damage. In this tropical Af climate, where sun exposure is frequent, being informed about UV levels allows you to take necessary precautions and enjoy the vibrant culture and stunning beaches without compromising your skin health. Stay aware, stay protected!

Hourly UV Index in Vaini

As the sun rises at 07:00, the UV Index starts off at a safe 0, perfect for those early morning routines. By 08:00, it nudges up to 1, indicating minimal risk. However, by 09:00, the intensity picks up to 2, signaling a gentle reminder to apply sunscreen if you're heading outdoors. The UV levels reach their peak at 12:00 and 13:00, soaring to a robust 7, which calls for careful sun protection measures. As the afternoon unfolds, the index gradually declines—6 at 14:00, then tapering to 4 by 15:00. The sun begins its descent, dropping back to 2 by 16:00 and further dwindling to 1 at 17:00 before finally retreating to 0 by 18:00 and into the evening. It's a beautiful day, but remember, the sun's rays are strongest during midday!

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	4	moderate	30 min
11:00	5	moderate	30 min
12:00	7	high	25 min
13:00	7	high	25 min
14:00	6	high	25 min
15:00	4	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 Vaini

The UV Index experiences significant seasonal variation, with the highest levels occurring from January to April, where the index reaches extreme levels (15-16) and a burn time of only 10 minutes. November and December also present extreme UV conditions. May marks a transition to very high levels (UV Index 9), with a burn time extending to 15 minutes, while June to August see a decrease in UV intensity yet maintain very high levels, particularly in July and August. As September through October approach extreme levels again, it’s crucial for residents and visitors to take precautions year-round. Sunscreen, protective clothing, and limited sun exposure during peak hours (10 AM to 4 PM) are highly advised, especially during the high-risk months of January to April and September to November.

Monthly Maximum UV Index for Vaini, Tonga

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

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

Vaini's solar exposure compared to other cities in Tonga. Generated using Copernicus Atmosphere Monitoring Service information.
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Vaini	16	15	14	11	9	7	8	10	11	13	15	16
Tatakamotonga UVI	16	15	14	11	9	7	8	10	11	13	15	16
Haveluloto UVI	16	15	14	11	9	7	8	10	11	13	15	16
Lapaha UVI	16	15	14	11	9	7	8	10	11	13	15	16
Nuku'alofa UVI	16	15	14	11	9	7	8	10	11	13	15	16
Neiafu UVI	16	16	15	12	9	7	8	11	12	14	15	16