UV Index in Mortlake, Australia

Last updated: July 2, 2025

In Mortlake, Australia, being aware of the UV Index is crucial for maintaining healthy skin and preventing sunburn. Understanding UV levels is essential, especially in a climate like Mortlake's Cfb zone, where annual exposure can lead to increased risks, particularly during peak hours. As the UV Index rises to moderate levels from 11 AM to 1 PM, it’s important for residents and visitors alike to protect themselves from harmful rays. By staying informed about UV levels, you can safeguard your skin and enjoy the beautiful outdoors without worry.

Hourly UV Index in Mortlake

At 07:00, the UV Index starts off at a comfortable 0, indicating safe outdoor conditions. As the sun rises, it gently climbs to 1 by 08:00 and remains steady until 09:00. By 10:00, a slight increase to 2 suggests it’s time to put on some sunscreen, especially as it peaks at 3 between 12:00 and 13:00. The afternoon sees a dip back to 2 from 14:00 to 15:00, before gradually lowering to 1 by 16:00. As the day winds down, the index returns to 0 around 18:00 and remains there until 19:00, offering a safe end to the day’s outdoor activities. Make sure to protect yourself during those midday hours when the sun is at its most intense!

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	1	low	45 min
10:00	2	low	45 min
11:00	2	low	45 min
12:00	3	moderate	30 min
13:00	3	moderate	30 min
14:00	2	low	45 min
15:00	2	low	45 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 Mortlake

Throughout the year, UV Index levels fluctuate significantly, indicating varying degrees of sun exposure risk. The high-risk months for UV exposure are January, February, March, November, and December, each exhibiting an extreme UV Index with a burn time of just 10 minutes. Following these months, April and September score a high UV Index, where a burn can occur in 25 minutes. Conversely, the UV Index drops to moderate levels in May, June, July, and August, allowing for safer outdoor activities with longer burn times of 30 minutes. October sees a shift back to a very high UV Index, with a burn time of only 15 minutes. Therefore, visitors and residents alike should exercise caution during the extreme months, ensuring adequate sun protection, and be mindful of the moderate months for prolonged outdoor enjoyment with fewer risks.

Monthly Maximum UV Index for Mortlake, Australia

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

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

Mortlake's solar exposure compared to other cities in Australia. Generated using Copernicus Atmosphere Monitoring Service information.
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Mortlake	14	12	11	7	4	3	3	5	7	9	12	14
Melbourne UVI	14	12	11	7	4	3	3	5	7	9	12	14
Adelaide UVI	14	13	12	8	5	3	4	5	7	10	12	15
Sydney UVI	14	13	11	8	5	3	4	6	8	10	12	14
Perth UVI	14	14	11	9	6	4	4	6	8	11	13	14
Brisbane UVI	15	15	13	10	7	5	5	8	9	12	14	15