May weather forecast
Machu Picchu, Peru

May's weather in Machu Picchu, Peru, is characterized by a marked decrease in rainfall compared to April, making it one of the driest months. The decrease in temperatures is even more notable with lows dropping to 11°C (51.8°F) from April's 12°C (53.6°F). The UV index remains at 11, indicating the continuous need for sun protection measures. As daylight hours slightly decrease to 11.5, sunshine remains consistent at 8 hours. With May, the dry season comes into full effect, with this pattern remaining consistent through the next month.

Temperature

The initiation of May in Machu Picchu records an average high-temperature of a still moderately hot 25°C (77°F), displaying a near consistency with the previous month. Machu Picchu's May nights see a large temperature deviation, with temperatures resting at a low of 11°C (51.8°F).

Rainfall

In Machu Picchu, in May, during 6 rainfall days, 23mm (0.91") of precipitation is typically accumulated. Throughout the year, there are 108 rainfall days, and 904mm (35.59") of precipitation is accumulated.

Daylight

The average length of the day in May is 11h and 31min.
On the first day of the month, sunrise is at 05:58 and sunset at 17:36. On the last day of May, sunrise is at 06:05 and sunset at 17:30 -05.

Sunshine

The months with the most sunshine are May through August, with an average of 8h of sunshine.

UV index

The average daily maximum UV index in May in Machu Picchu is 11. A UV Index estimate of 11, and higher, represents an extreme health hazard from exposure to the Sun's UV rays for the ordinary person.
Note: In May, a daily maximum UV index of 11 leads to the following instructions:
Undertake all critical precautions. Protection from sun harm is vital. UV radiation from the sun is at its strongest between 10 a.m. and 4 p.m. Try to limit direct exposure during these hours. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection.