McMurdo Station UV Index

McMurdo Station, Antarctica has relatively mild UV levels throughout the year at latitude 77.8°S. The annual average UV index is 2.3. While UV radiation stays generally low to moderate, protection is still advisable during the summer months.

The highest UV levels in McMurdo Station occur in December, when the UV index reaches 5 (moderate). During this period, unprotected skin can burn in as little as 25-30 minutes during peak hours (11am to 3pm). SPF 30+ sunscreen and a hat are recommended for extended outdoor activities.

The lowest UV levels occur in April, with an average UV index of 1 (low). During this period, the risk of sunburn is minimal for most skin types, though some UV exposure still occurs.

The World Health Organization recommends sun protection measures when the UV index is 3 or above. In McMurdo Station, the UV index exceeds this threshold for 5 months of the year. The UV index stays in the moderate to high range for most of the year.