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March Weather in San Juan, Peru

Last updated: August 27, 2025

In San Juan, Peru, the average temperature in March hovers around 13°C (55°F), with a comfortable range between a cool 6°C (44°F) and a mild 19°C (66°F). Expect significant rainfall, with an average precipitation of 246 mm (9.7 in) spread over 31 days, and prepare for a high degree of humidity at 90%.

March Temperature in San Juan

In March in San Juan, the average temperature is 13°C (55°F). The maximum can reach 19°C (66°F) and the minimum can be as low as 6°C (44°F). This mild climate makes San Juan a pleasant destination for travelers looking to explore its sights comfortably.

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

The chart illustrates March 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, March typically has an average temperature of 13°C (55°F), with highs reaching up to 19°C (66°F) and lows dropping to around 6°C (44°F).
JanFebMarAprMayJunJulAugSepOctNovDec545555555454555555555555
Data source: Temperature data for San Juan generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

March Precipitation in San Juan

In San Juan, in March, the total precipitation amount is 246 mm (9.7 in) over the course of 31 days.

March Precipitation Trends in San Juan

The chart displays monthly precipitation patterns in San Juan, with values for each month alongside March’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how March’s conditions compare to those of other months. In San Juan, March typically receives around 246 mm (9.7 inches) of precipitation spread over approximately 31 days.
JanFebMarAprMayJunJulAugSepOctNovDec22924424612560231926729976129
Data source: Precipitation data for March generated using information from the Copernicus Climate Change Service.
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March Humidity in San Juan

In San Juan in March humidity is 90%. With an average temperature of 13°C (55°F), this humidity feels like a heavy blanket wrapping around you, making every step feel more laborious and causing a sticky discomfort that can drain your energy quickly while exploring the sights.

March Average Humidity in San Juan

This chart illustrates the average monthly humidity levels in San Juan, with March’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In March, average humidity in San Juan is approximately 90%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec89%89%90%89%83%69%56%51%53%68%82%87%
Data source: Humidity data for March generated using information from the Copernicus Climate Change Service.

March UV Index in San Juan

In San Juan in March, the maximum UV index is 18, which corresponds to an extreme exposure category. This means that the time to burn is just 10 minutes. For more detailed information, you can check the hourly UV index in San Juan.

Maximum UV Index Levels in San Juan for March

The chart shows the monthly maximum UV Index (UVI) for San Juan in March, 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 March, the maximum UV index in San Juan typically reaches 18, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec181918171411131416181818
Data source: San Juan March 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 March 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 March’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 March’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather12°C (55°F)229 mm (9.0 inches)89%extreme
February Weather13°C (55°F)244 mm (9.6 inches)89%extreme
March Weather13°C (55°F)246 mm (9.7 inches)90%extreme
April Weather13°C (55°F)125 mm (4.9 inches)89%extreme
May Weather12°C (55°F)60 mm (2.3 inches)83%extreme
June Weather12°C (55°F)23 mm (0.9 inches)69%extreme
July Weather13°C (55°F)19 mm (0.7 inches)56%extreme
August Weather13°C (55°F)26 mm (1.0 inches)50%extreme
September Weather13°C (56°F)72 mm (2.9 inches)53%extreme
October Weather13°C (55°F)99 mm (3.9 inches)68%extreme
November Weather13°C (56°F)76 mm (3.0 inches)81%extreme
December Weather13°C (55°F)129 mm (5.1 inches)87%extreme

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