UV Index
UV Index
Today's UV index in Naha, Japan 
will be up to 12, indicating a extreme level of sun exposure for the average person. Check our tips for today to make sure you're safe in the sun.
Last checked: 2025-05-09
UV index at 12 in Naha means extreme risk: limit outdoor time especially from 10 a.m. to 4 p.m., actively seek shade, wear protective clothing, broad-brimmed hat, apply SPF 30+ sunscreen every 2 hours, and wear UV-blocking sunglasses. Watch for bright surfaces like water and snow increasing UV exposure.
Naha, Japan, has a UV index that can reach very high levels, especially during the summer months. It often ranges from moderate to very high, with peaks typically in May and June.
Naha experiences a warm climate year-round, with hot, humid summers and mild winters. The rainy season occurs from May to June, and typhoons are common from July to October, bringing heavy rain and strong winds.
Compared to the rest of Japan, Naha is warmer and more tropical. It has milder winters than northern cities like Tokyo or Sapporo. Compared to nearby countries like South Korea or China, Naha is generally warmer and wetter, especially during the summer.
See the UV index hour by hour for Naha, along with the temperature and how cloudy it is. If the UV level is higher than moderate, it's best to avoid direct sunlight.