UV Index in Sentani, Indonesia

Last updated: June 2, 2025

In Sentani, Indonesia, staying informed about the UV Index is crucial for protecting your skin from harmful ultraviolet rays. Understanding UV levels can significantly aid in sunburn prevention and overall skin health, especially during peak hours when UV exposure reaches its highest at an index of 11 between 10:00 AM and 1:00 PM. With Sentani's tropical climate characterized by its warm temperatures and abundant sunshine, being aware of daily UV risks helps residents and visitors alike enjoy the outdoors safely while minimizing the potential for skin damage.

Hourly UV Index in Sentani

The UV Index varies significantly throughout the day, peaking during the late morning to early afternoon. Starting at a mild 1 at 07:00, it quickly climbs to reach a notable 4 by 08:00. As the sun rises higher, the index escalates sharply, hitting a stunning 10 at 10:00 and reaching its zenith at dangerous 11 at both 11:00 and 12:00. By 13:00, it slightly dips to 10, before gradually declining to 6 at 14:00. The late afternoon sees a rapid reduction, plunging to 4 at 15:00 and dropping to a safe 1 by 16:00. As evening approaches, the UV Index returns to 0 by 18:00, signaling a decrease in solar intensity. Thus, maximizing sun protection during the peak hours is essential!

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	4	moderate	30 min
09:00	7	high	25 min
10:00	10	very high	15 min
11:00	11	extreme	10 min
12:00	11	extreme	10 min
13:00	10	very high	15 min
14:00	6	high	25 min
15:00	4	moderate	30 min
16:00	1	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 Sentani

Throughout the year, the UV Index exhibits consistently high levels, remaining in the extreme exposure category from January through November, with January and February peaking at 17. Notably, the high-risk months for UV exposure are from January to April, where the UV Index remains between 15 and 17, indicating a very short burn time of just 10 minutes. Even in the summer months of June and July, when the Index is slightly lower at 12, caution is still essential. Visitors and residents are strongly advised to take protective measures, including wearing sunscreen, protective clothing, and sunglasses when outdoors, especially during these high-risk months, to avoid harmful skin exposure.

Monthly Maximum UV Index for Sentani, Indonesia

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

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

Sentani's solar exposure compared to other cities in Indonesia. Generated using Copernicus Atmosphere Monitoring Service information.
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Surabaya UVI	13	15	14	12	12	10	11	12	14	13	13	13
Bekasi UVI	14	16	16	14	11	10	10	11	13	15	14	13
Jakarta UVI	14	16	16	14	11	10	10	11	13	15	14	13
Medan UVI	13	15	15	15	14	12	12	13	14	14	13	12
Bandung UVI	15	16	16	15	12	11	11	12	14	15	15	14
Sentani	15	17	17	16	14	12	12	14	15	15	14	14