July weather forecast
Lyon, France

July brings to Lyon the height of summer with temperatures peaking at a TORRID 27.7°C (81.9°F). To escape the afternoon heat, citizens often retreat to the city's numerous shady parks and refreshing waterways. This month yields the most sunshine hours per day, making solar protection indispensable. Evenings provide a pleasant respite with temperatures comfortably receding after sunset. As Lyon’s populace thrives in July’s vibrant atmosphere, the city buzzes with summer festivals and events.

Temperature

July, recording an average high temperature of 27.7°C (81.9°F) and a low temperature of 16.6°C (61.9°F), is Lyon's warmest month.

Heat index

The heat index in July is estimated at a tropical 30°C (86°F). Continuous activity in exposure could lead to a feeling of fatigue and heat cramps.
When assessing, remember that heat index measurements are for light winds and shaded spots. With exposure to direct sunshine, the heat index could climb by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', is a measure that combines air temperature and relative humidity into a single value that indicates how hot the weather feels. The effect is experienced differently by individuals, hinging on unique characteristics such as body mass, stature, and level of activity. Awareness is key; direct sunlight can enhance the weather's impact, possibly boosting the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. Children often overlook the necessity for resting and fluid replenishment. Thirst is a late sign of dehydration - thus, it is critical to stay hydrated, especially during extended periods of physical activities.

Humidity

The least humid month is July, with an average relative humidity of 65%.

Rainfall

In Lyon, in July, it is raining for 6.9 days, with typically 64mm (2.52") of accumulated precipitation. Throughout the year, there are 104.1 rainfall days, and 832mm (32.76") of precipitation is accumulated.

Snowfall

In Lyon, snow does not fall in May through October.

Daylight

In July, the average length of the day is 15h and 18min.
On the first day of July in Lyon, sunrise is at 05:55 and sunset at 21:34. On the last day of the month, sunrise is at 06:23 and sunset at 21:10 CEST.

Sunshine

With an average of 9.1h of sunshine, July has the most sunshine of the year in Lyon.

UV index

June and July, with an average maximum UV index of 8, are months with the highest UV index in Lyon, France. A UV Index value of 8 to 10 symbolizes a very high health hazard from unprotected exposure to Sun's UV rays for average individuals.
Note: A maximum daily UV index of 8 during July morphs into the following directions:
Immediate precautions are necessary; otherwise, skin and eyes might get damaged quickly. Limit your direct sun exposure, especially between 10 a.m. and 4 p.m., when UV radiation is strongest. Shade structures might not provide complete sun protection. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage.