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April Weather in San Mateo, Peru

Last updated: August 27, 2025

In April, the average temperature in San Mateo, Peru hovers around 3°C (38°F), making it a chilly time of year. Temperatures can dip as low as -6°C (22°F) and can rise to a maximum of 11°C (52°F). Be prepared for frequent rain, as the area experiences about 164 mm (6.5 in) of precipitation across 26 days. With an average humidity level of 89%, it’s a good idea to dress warmly and stay dry!

April Temperature in San Mateo

In April in San Mateo, the average temperature is 3°C (38°F). The maximum can reach 11°C (52°F), and the minimum can be as low as -6°C (22°F). Travelers should be prepared for chilly conditions and dress in layers to stay warm during their visit.

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

The chart illustrates April temperature patterns in San Mateo, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In San Mateo, April typically has an average temperature of 3°C (38°F), with highs reaching up to 11°C (52°F) and lows dropping to around -6°C (22°F).
JanFebMarAprMayJunJulAugSepOctNovDec383838383736353637373839
Data source: Temperature data for San Mateo 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.

April Precipitation in San Mateo

In San Mateo in April, the precipitation amount is 164 mm (6.5 in) spread over 26 days.

April Precipitation Trends in San Mateo

The chart displays monthly precipitation patterns in San Mateo, 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 Mateo, April typically receives around 164 mm (6.5 inches) of precipitation spread over approximately 26 days.
JanFebMarAprMayJunJulAugSepOctNovDec220251291164124504459120174232244
Data source: Precipitation data for April generated using information from the Copernicus Climate Change Service.
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April Humidity in San Mateo

In San Mateo in April, humidity is 89%. With an average temperature of 3°C (38°F), this humidity feels like a chilly blanket wrapping around you, making travel uncomfortable as the dampness seeps into your clothes and lingers in the air, leaving you feeling cold and clammy.

April Average Humidity in San Mateo

This chart illustrates the average monthly humidity levels in San Mateo, 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 Mateo is approximately 89%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec91%90%91%89%85%65%47%38%40%56%76%90%
Data source: Humidity data for April generated using information from the Copernicus Climate Change Service.

April UV Index in San Mateo

In San Mateo in April, 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 Mateo.

Maximum UV Index Levels in San Mateo for April

The chart shows the monthly maximum UV Index (UVI) for San Mateo 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 Mateo typically reaches 18, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec201920181413141517182018
Data source: San Mateo 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 Mateo Compares to Other Months

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

This table compares monthly weather conditions in San Mateo, showing how April’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather3°C (38°F)220 mm (8.7 inches)91%extreme
February Weather3°C (39°F)251 mm (9.9 inches)90%extreme
March Weather3°C (38°F)291 mm (11.5 inches)91%extreme
April Weather3°C (38°F)164 mm (6.5 inches)89%extreme
May Weather3°C (37°F)124 mm (4.9 inches)85%extreme
June Weather2°C (36°F)50 mm (2.0 inches)65%extreme
July Weather2°C (35°F)44 mm (1.7 inches)47%extreme
August Weather2°C (36°F)59 mm (2.3 inches)38%extreme
September Weather3°C (37°F)120 mm (4.7 inches)40%extreme
October Weather3°C (38°F)174 mm (6.8 inches)56%extreme
November Weather4°C (39°F)232 mm (9.1 inches)76%extreme
December Weather4°C (39°F)244 mm (9.6 inches)90%extreme

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