UV Index in Bulls, New Zealand

Last updated: July 2, 2025

Understanding the UV Index is crucial for residents of Bulls, New Zealand, where sun exposure can vary throughout the day. Recognizing and monitoring UV levels helps prevent sunburn and promotes long-term skin health, making it essential for outdoor activities. In Bulls' temperate climate, particularly during sunny days, even moderate UV readings—like the typical midday peak of 3—can pose risks, emphasizing the need for vigilance and proper sun protection strategies to ensure safety and well-being.

Hourly UV Index in Bulls

At dawn, the UV Index starts at a maximum of 0 at 7:00 AM, indicating minimal exposure risk. As the day progresses, the UV levels subtly rise, reaching 1 by 8:00 and 9:00 AM. By 10:00 AM, the index reaches 2, continuing at this moderate level through 11:00 AM. The peak sunshine hours arrive at 12:00 PM, where the UV Index hits 3, marking a time to take extra precautions. As the afternoon unfolds, the levels gently dip back to 2 from 1:00 PM to 3:00 PM, before declining to 1 between 4:00 PM and 5:00 PM. The UV exposure decreases significantly as evening approaches, dropping back to 0 by 6:00 PM and remaining at that safe level until sunset. Remember to stay protected during the peak hours!

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	2	low	45 min
14:00	2	low	45 min
15:00	1	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 Bulls

Throughout the year, UV Index readings fluctuate significantly, with the highest risks occurring during the extreme exposure categories in January, February, November, and December, when the UV Index reaches 13 and the burn time is as little as 10 minutes. The transition months of March and October indicate very high exposure levels, necessitating careful sun protection with burn times of just 15 minutes. As we move into the warmer months, April and September present high exposure with burn times of 25 minutes. By May, June, and July, the UV Index decreases to moderate levels, offering slightly longer burn times of 30 to 45 minutes. Residents and visitors should be especially cautious during high-risk months, ensuring they apply sunscreen regularly and seek shade when necessary, particularly during peak sunlight hours.

Monthly Maximum UV Index for Bulls, New Zealand

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

The table above highlights how UV exposure in Bulls 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.

Bulls'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
Wellington UVI	13	13	9	7	4	2	2	4	6	9	10	13
Bulls	13	13	9	7	4	2	3	4	6	9	11	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