UV index at 13.8 in Lima means extreme risk; limit outdoor time from 10 a.m. to 4 p.m., use shade, protective clothing, SPF 30+ sunscreen, and sunglasses; watch for bright surfaces like water and snow increasing UV exposure.
Read more here about the climate and sun exposure in and around Lima.
Lima, Peru experiences high UV index levels due to its location close to the equator. The UV index in Lima can reach 11 or higher (extreme) during the summer months, putting people at increased risk of sunburn and skin damage. It is important to protect yourself with sunscreen, hats, and sunglasses when spending time outdoors in Lima to minimize the harmful effects of UV radiation.
Lima has a mild and desert-like climate with two main seasons: summer and winter. Summer in Lima runs from December to April, with temperatures ranging from 20 °C to 30 °C (68 °F to 86 °F). It is characterized by high humidity, occasional fog, and little to no rain. Winter in Lima, from June to September, sees temperatures dropping to around 12 °C to 18 °C (54 °F to 64 °F) with more overcast days and an increase in both humidity and rainfall.
Compared to other cities in the region, Lima enjoys fewer hours of sunlight. The city is often covered by a thick layer of coastal fog, especially during the winter months. Lima's average annual sunlight hours range from 1,700 to 2,000 hours, while other areas in the region may receive up to 3,000 hours or more. This reduced sun exposure can have a significant impact on the overall weather patterns and temperatures experienced in Lima throughout the year.
The chart above displays the Shortwave Radiation Sum (MJ/m²) for each day of the last year in Lima. It's designed to provide you with a better understanding of the yearly weather and sun exposure.