UV Index in Christchurch, New Zealand

Last updated: July 2, 2025

Understanding the UV Index is crucial for residents and visitors in Christchurch, New Zealand, where our temperate climate can still expose us to harmful ultraviolet rays. Awareness of UV levels is essential for preventing sunburn and protecting skin health, particularly in the summer months when the sun's intensity can rise. Even in a climate categorized as Cfb, which features mild temperatures and ample rainfall, the UV Index can fluctuate throughout the day. During peak hours, such as from 11 AM to 2 PM, UV levels can reach up to 2—a reminder to be proactive about sun protection. Stay informed and keep your skin safe in beautiful Christchurch!

Hourly UV Index in Christchurch

The UV Index throughout the day reveals a gradual ascent as the sun climbs high in the sky. Starting at a maximum of 0 at 07:00, the index slowly advances to 1 from 08:00 to 10:00. By 11:00, it reaches 2, peaking at this level from 12:00 to 14:00, indicating a moderate risk for harm from unprotected sun exposure. As the afternoon wanes, the UV intensity begins to taper off, descending to 1 by 15:00 and then returning to 0 by 18:00. This hourly fluctuation emphasizes the importance of being sun-smart during those midday hours when the UV Index is at its peak.

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.
TimeUVICategoryTime to Burn
07:000low45 min
08:001low45 min
09:001low45 min
10:001low45 min
11:002low45 min
12:002low45 min
13:002low45 min
14:002low45 min
15:001low45 min
16:001low45 min
17:001low45 min
18:000low45 min
19:000low45 min

Monthly UV Index Trends in Christchurch

Throughout the year, the UV Index demonstrates significant seasonal fluctuations, with the highest levels occurring during the winter months of January (13) and February (12), categorized as extreme with a rapid burn time of 10 minutes. The transition to spring sees a decrease, with March at 9 (very high) and April dropping to 6 (high). May marks a notable reduction to 3 (moderate) as temperatures warm up, continuing through the summer months of June and July where the index remains low at 2. As autumn approaches, the index rises again with October and November at 9 and 10 (very high), respectively, having burn times of just 15 minutes. Visitors and residents should exercise increased caution during the high-risk months of January, February, October, and November, ensuring proper sun protection measures such as sunscreen, hats, and protective clothing to minimize skin damage.

Monthly Maximum UV Index for Christchurch, New Zealand

The monthly maximum UV Index (UVI) represents the highest UV radiation level recorded each month in Christchurch. It measures the strength of ultraviolet radiation from the sun and helps assess the risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec1312963223591012
Data source: Statistical UV Index data for Christchurch, 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 Christchurch UV Index with Other New Zealand Cities

The table above highlights how UV exposure in Christchurch 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.
Christchurch's solar exposure compared to other cities in New Zealand. Generated using Copernicus Atmosphere Monitoring Service information.
 JanFebMarAprMayJunJulAugSepOctNovDec
Christchurch1312963223591012
Wellington UVI1313974224691013
Hamilton UVI141410743357101113
Manukau City UVI141410743357101113
Auckland UVI141410743357101113