UV Index in Heretaunga, New Zealand

Last updated: June 2, 2025

In Heretaunga, New Zealand, understanding the UV Index is vital for maintaining skin health and preventing sunburn. As a region with a Cfb climate, Heretaunga experiences moderate UV exposure, particularly during midday hours when UV levels can reach 2. Being aware of these levels helps residents and visitors alike make informed choices about sun protection, ensuring that outdoor activities remain safe and enjoyable. By keeping an eye on the UV Index, you can protect your skin from harmful rays and embrace the beautiful sunny days that Heretaunga has to offer!

Hourly UV Index in Heretaunga

The UV Index shows a gradual ascent throughout the morning, beginning at 0 at 07:00 and reaching a peak of 2 between 11:00 and 14:00. From 08:00 to 10:00, the index remains at 1, indicating a low risk of harm from unprotected sun exposure. As the afternoon approaches, the UV levels remain stable at 2 during the midday hours, suggesting a moderate risk, before tapering off later in the day. By 15:00, the index drops back to 1 and eventually returns to 0 by the evening, signaling a safe end to sun exposure as daylight fades. Enjoy the sun wisely!

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	1	low	45 min
11:00	2	low	45 min
12:00	2	low	45 min
13:00	2	low	45 min
14:00	2	low	45 min
15:00	1	low	45 min
16:00	1	low	45 min
17:00	0	low	45 min
18:00	0	low	45 min
19:00	0	low	45 min

Monthly UV Index Trends in Heretaunga

The UV Index shows significant seasonal changes, with the highest risk occurring from January to February and December, where the index peaks at 13 and is categorized as extreme, indicating a burn time of just 10 minutes. March and November follow closely, with a very high index of 9 to 10, suggesting a burn time of 15 minutes. The high-risk months are therefore primarily winter and late fall, making it essential for visitors and residents to exercise caution during these periods. During the spring, the index reduces to 7 in April, and moderate levels can be found in May and August, while June and July have low UV exposure, allowing for safer outdoor activities. To protect skin health, it's advisable to wear sunscreen, protective clothing, and seek shade during peak UV hours, particularly in high-risk months.

Monthly Maximum UV Index for Heretaunga, New Zealand

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

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

Heretaunga's solar exposure compared to other cities in New Zealand. Generated using Copernicus Atmosphere Monitoring Service information.
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Christchurch UVI	13	12	9	6	3	2	2	3	5	9	10	12
Heretaunga	13	13	9	7	4	2	2	4	6	9	10	13
Wellington UVI	13	13	9	7	4	2	2	4	6	9	10	13
Hamilton UVI	14	14	10	7	4	3	3	5	7	10	11	13
Manukau City UVI	14	14	10	7	4	3	3	5	7	10	11	13
Auckland UVI	14	14	10	7	4	3	3	5	7	10	11	13