April Weather in San Juan, Peru

Last updated: August 27, 2025

In April, the average temperature in San Juan, Peru is a warm 26°C (79°F), with daily temperatures ranging from a comfortable 21°C (71°F) to a sizzling 35°C (95°F). Expect 305 mm (12.0 in) of precipitation spread over 26 days, contributing to a high average humidity of 87%, creating a lush and vibrant atmosphere.

April Temperature in San Juan

In April in San Juan, the average temperature is 26°C (79°F). The maximum can reach 35°C (95°F) and the minimum can be as low as 21°C (71°F). This makes it an ideal time for travelers seeking warm and pleasant weather.

April Weather in San Juan: Daily Temperature Highs, Lows, and Averages

The chart illustrates April temperature patterns in San Juan, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In San Juan, April typically has an average temperature of 26°C (79°F), with highs reaching up to 35°C (95°F) and lows dropping to around 21°C (71°F).

Data source: Temperature data for San Juan generated using information from the Copernicus Climate Change Service.

April Precipitation in San Juan

In San Juan in April, the total precipitation amount is 305 mm (12.0 in) over the course of 26 days.

April Precipitation Trends in San Juan

The chart displays monthly precipitation patterns in San Juan, with values for each month alongside April’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how April’s conditions compare to those of other months. In San Juan, April typically receives around 305 mm (12.0 inches) of precipitation spread over approximately 26 days.

Data source: Precipitation data for April generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

April Humidity in San Juan

In San Juan in April, humidity is 87%. With an average temperature of 26°C (79°F), this humidity feels like walking through a warm, thick blanket, making it essential to stay hydrated and take frequent breaks while exploring.

April Average Humidity in San Juan

This chart illustrates the average monthly humidity levels in San Juan, with April’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In April, average humidity in San Juan is approximately 87%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for April generated using information from the Copernicus Climate Change Service.

April UV Index in San Juan

In San Juan in April, the maximum UV index is 16, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, making it crucial to take protective measures. For detailed information, you can refer to the Hourly UV Index in San Juan.

Maximum UV Index Levels in San Juan for April

The chart shows the monthly maximum UV Index (UVI) for San Juan in April, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In April, the maximum UV index in San Juan typically reaches 16, which falls under the extreme exposure category.

Data source: San Juan April UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

Extreme (11+): Avoid the sun, stay in shade.
Very High (8-10): Limit sun exposure.
High (6-7): Use SPF 30+ and protective clothing.
Moderate (3-5): Midday shade recommended.
Low (0-2): No protection needed.

How April Weather in San Juan Compares to Other Months

Weather in San Juan varies notably across the year, with each month offering distinct climate conditions. This page compares April’s weather to other months in San Juan, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in San Juan, showing how April’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	26°C (79°F)	251 mm (9.9 inches)	84%	extreme
February Weather	26°C (79°F)	226 mm (8.9 inches)	82%	extreme
March Weather	26°C (79°F)	321 mm (12.7 inches)	84%	extreme
April Weather	26°C (79°F)	305 mm (12.0 inches)	87%	extreme
May Weather	26°C (79°F)	223 mm (8.8 inches)	89%	extreme
June Weather	25°C (78°F)	193 mm (7.6 inches)	82%	extreme
July Weather	25°C (78°F)	145 mm (5.7 inches)	69%	extreme
August Weather	26°C (79°F)	107 mm (4.2 inches)	58%	extreme
September Weather	26°C (80°F)	152 mm (6.0 inches)	56%	extreme
October Weather	26°C (80°F)	188 mm (7.4 inches)	62%	extreme
November Weather	26°C (80°F)	233 mm (9.2 inches)	77%	extreme
December Weather	26°C (79°F)	273 mm (10.7 inches)	88%	extreme