May weather forecast
Peru

May signifies the onset of the dry season in certain regions of Peru, bringing changes to the overall weather conditions.

In the coastal region, comprising cities like Lima and Trujillo, May experiences further cooling from the summer heat. Daytime temperatures typically fall between 16°C (60.8°F) to 24°C (75.2°F). As is characteristic of this region, rainfall is practically non-existent.

The Andean highlands, where cities such as Cusco and Arequipa are located, usher in the dry season in May. The rainfall decreases significantly compared to April, with average precipitation levels dropping to 30mm (1.18"). Despite the drier conditions, daytime temperatures remain fairly consistent, fluctuating between 10°C (50°F) to 18°C (64.4°F), while nighttime temperatures can reach freezing at higher altitudes.

Meanwhile, in the Amazon rainforest, cities like Iquitos and Puerto Maldonado begin experiencing a reduction in rainfall. Average precipitation in May is around 160mm (6.3"), a decrease from April. Despite the reduction in rainfall, temperatures remain consistently high, usually above 30°C (86°F), keeping the climate hot and humid.

In comparison to April, May sees a decrease in rainfall in both the Andean and Amazon regions, marking the beginning of the dry season. Temperatures in the coastal region continue to drop slightly. Looking forward to June, the dry conditions in the Andean and Amazon regions continue to prevail, while coastal temperatures maintain a similar range.

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• Lima - May »
  On the last day of May, in Lima, sunrise is at 06:22 and sunset at 17:49 -05. The months with the lowest UV index are May through October, with an average maximum UV index of 5.
• Arequipa - May »
  January through December, with an average maximum UV index of 4, are months with the lowest UV index in Arequipa, Peru. January through December, with an average maximum UV index of 4, are months with the highest UV index in Arequipa, Peru.
• Cusco - May »
  May rings in the full onset of the dry season in Cusco carrying along elevated sunshine hours and significantly reduced rainfall. On the first day of May in Cusco sunrise is at 05:56 and sunset at 17:33.
• Trujillo - May »
  The months with the most sunshine in Trujillo are January, February, April, May, November and December, with an average of 6h of sunshine. January, February, April, May, November and December, with an average of 6h of sunshine, are months with the most sunshine in Trujillo, Peru.
• Chiclayo - May »
  The months with the highest UV index in Chiclayo, Peru, are January through June, November and December, with an average maximum UV index of 6. On the first day of May in Chiclayo, sunrise is at 06:20 and sunset at 18:12.
• Iquitos - May »
  On the last day of the month, in Iquitos sunrise is at 05:53 and sunset at 17:48 -05. The heat index, also known as 'real feel' or 'felt air temperature', is derived by integrating air temperature with the existing relative humidity to express the perceived warmth.
• Callao - May »
  The months with the least rainfall in Callao are January, April, May, September through December Rain falls for 1.1 days and accumulates 1mm (0.04") of rain. On the last day of the month, in Callao sunrise is at 06:22 and sunset at 17:50 -05.
• Pucallpa - May »
  On the first day of May in Pucallpa, sunrise is at 06:01 and sunset at 17:49. Pucallpa's shift from April to May is accompanied by an average high-temperature of a still tropical 31.8°C (89.2°F), a slight deviation from 31.7°C (89.1°F).
• Tacna - May »
  In Tacna, Peru, in May, during 3.7 rainfall days, 3mm (0.12") of precipitation is typically accumulated. Throughout the year, in Tacna, there are 63.2 rainfall days, and 83mm (3.27") of precipitation is accumulated.
• Chimbote - May »
  May, June, November and December, with an average relative humidity of 82%, are most humid months in Chimbote, Peru. Chimbote, Peru experiences further cooling during the month of May, reflected by the lowest sea temperature in the year, 19.3°C (66.7°F).
• Ica - May »
  On the last day of the month, sunrise is at 06:20 and sunset at 17:41 -05. On the last day of the month, sunrise is at 06:20 and sunset at 17:41 -05.