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March Weather in San Juan, Peru

Last updated: August 27, 2025

In San Juan, Peru, the average temperature in March is a pleasant 21°C (70°F). Weather enthusiasts can expect a comfortable range, with minimums dipping to 16°C (61°F) and soaring to maximums of 27°C (81°F). During this time, precipitation is minimal, with just 5 mm (0.2 in) expected over 1 day. The air remains humid, averaging 86%, creating a warm and cozy atmosphere perfect for outdoor adventures!

March Temperature in San Juan

In March in San Juan, the average temperature is 21°C (70°F). The maximum can reach 27°C (81°F), while the minimum can be as low as 16°C (61°F). This moderate climate makes it an ideal time to explore the area's outdoor attractions and enjoy various activities.

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 21°C (70°F), with highs reaching up to 27°C (81°F) and lows dropping to around 16°C (61°F).
JanFebMarAprMayJunJulAugSepOctNovDec707170666361595858606266
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 precipitation amount is 5 mm (0.2 in) over a duration of 1 day.

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 5 mm (0.2 inches) of precipitation spread over approximately 1 days.
JanFebMarAprMayJunJulAugSepOctNovDec141153691166546
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 86%. With an average temperature of 21°C (70°F), this humidity feels like walking through a warm, moist veil, making it essential to stay hydrated and take frequent breaks while exploring the area.

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 86%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec85%85%86%88%85%78%76%74%74%78%82%83%
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 14, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, so it's crucial to take precautions. For the detailed hourly UV index in San Juan, you can check here.

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 14, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec1515141310991113141515
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 Weather21°C (70°F)14 mm (0.6 inches)85%extreme
February Weather21°C (71°F)11 mm (0.4 inches)85%extreme
March Weather21°C (70°F)5 mm (0.2 inches)86%extreme
April Weather19°C (67°F)3 mm (0.1 inches)88%extreme
May Weather17°C (63°F)5 mm (0.2 inches)85%very high
June Weather16°C (61°F)9 mm (0.4 inches)78%very high
July Weather15°C (59°F)11 mm (0.4 inches)75%very high
August Weather14°C (58°F)6 mm (0.2 inches)73%extreme
September Weather15°C (58°F)6 mm (0.2 inches)74%extreme
October Weather15°C (60°F)5 mm (0.2 inches)78%extreme
November Weather17°C (63°F)4 mm (0.2 inches)82%extreme
December Weather19°C (66°F)6 mm (0.2 inches)83%extreme

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