UV index today  UV Index

UV Index in Tokyo, JP

UV index


Cloud cover



00.0 ℃


Today's UV index in Tokyo, Japan Japan will be up to 2.3, indicating low risk of harm from the sun's UV rays for the average person. Check our tips for today to make sure you're safe in the sun.


Today's tips

Today, the UV index suggests low sun danger (0-2) in Tokyo, reaching up to 2.3. Remember sunglasses and SPF 30+ on sunny days, and be cautious around reflective surfaces like sand, water, and snow for increased UV exposure.

Tokyo Weather

Read more here about the climate and sun exposure in and around Tokyo.

UV Index in Tokyo

The UV index in Tokyo varies throughout the year, with the highest levels occurring during the summer months. In July and August, the UV index can reach as high as 10, which is considered very high (or extreme). During spring and autumn, the UV index is generally moderate, ranging from 4 to 6. It is crucial to protect yourself from the sun's rays by using sunscreen, wearing hats and sunglasses, and seeking shade during peak hours.

Weather Seasons

UV index

Tokyo experiences four distinct seasons: spring, summer, autumn, and winter. Spring (March to May) in Tokyo is mild, with temperatures ranging from 10 °C (50 °F) to 20 °C (68 °F). It is a beautiful time to visit as cherry blossoms bloom across the city. Summer (June to August) is hot and humid, with temperatures averaging around 25 °C (77 °F), but often reaching over 30 °C (86 °F). Autumn (September to November) brings cooler temperatures, ranging from 15 °C (59 °F) to 25 °C (77 °F), and colorful foliage. Winter (December to February) is cold, with temperatures ranging from 0 °C (32 °F) to 10 °C (50 °F), and occasional snowfall.

Tokyo's Climate

Compared to other regions of Japan, Tokyo generally receives more sunshine throughout the year. This is partly due to its location in the Kanto region, which has a lower average annual precipitation compared to other areas. The city is also less prone to typhoons compared to western Japan. However, it is important to note that sun exposure can still be harmful, and taking proper precautions to protect your skin is essential regardless of the region you are visiting in Japan.

Annual Sun Radiation

The chart above displays the Shortwave Radiation Sum (MJ/m²) for each day of the last year in Tokyo. It's designed to provide you with a better understanding of the yearly weather and sun exposure.


* This page's content about the UV index in Tokyo (Japan) is for educational and informational purposes only. The developers and data providers are not liable for the accuracy, reliability, or availability of the information. The information is not a substitute for professional medical advice, and the developers and data providers are not medical professionals. Seek advice from a qualified health provider for any medical concerns, and do not disregard medical advice or delay seeking it based on the information provided on this site.