Tranby UV Index

Tranby, Norway experiences significant seasonal variation in UV radiation at latitude 59.8°N. The UV index ranges from 1 in January to 7 in June, with an annual average of 3.9. This variation follows the pattern typical of mid-latitude cities.

The highest UV levels in Tranby occur in June, when the UV index reaches 7 (high). 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 January, 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 Tranby, the UV index exceeds this threshold for 8 months of the year. The UV index stays in the moderate to high range for most of the year.