UV Index
UV Index
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Today's UV index in Lyon, France 
will be up to 3.6, indicating a moderate level of sun exposure for the average person. Check the annual sun radiation in the city and our tips for today to make sure you're safe in the sun.
With a UV index reaching up to 3.6 in Lyon, stay shaded during midday when the sun is strongest; wear protective clothing, a wide-brimmed hat, UV-blocking sunglasses; apply SPF 30+ sunscreen every 2 hours, even on cloudy days; and be cautious of heightened UV on bright surfaces.
The UV index in Lyon, France, can reach high levels during the summer months, with values often exceeding 7 on a scale of 11. This is due to the city's relatively southern location and its distance from the moderating effects of the ocean.
Lyon experiences a temperate climate with four distinct seasons. Winters are cool and often foggy, while summers are warm and sunny. Spring and autumn are mild and bring occasional rainfall. Snow is possible in the winter, but it is relatively rare.
Compared to its region and neighboring countries, Lyon's weather is typically milder than the more extreme temperatures found in northern France and the UK, but it is less reliably sunny than the Mediterranean coast further south. Lyon's weather falls between the often rainy conditions of the UK and the reliably drier weather of nearby Switzerland and Italy.
The chart below displays the average Shortwave Radiation Sum (MJ/m²) for each month of the last year in Lyon. It's designed to provide you with a better understanding of the yearly weather and sun exposure.