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April Weather in Santiago, Costa Rica

Last updated: August 23, 2025

In April, the average temperature in Santiago, Costa Rica hovers around 24°C (76°F). Expect a comfortable range, with lows dipping to 18°C (64°F) and highs soaring to 31°C (89°F). Be prepared for a splash of rain, as 118 mm (4.6 in) of precipitation is likely over 24 days, accompanied by an average humidity of 67%.

April Temperature in Santiago

In April in Santiago, the average temperature is 24°C (76°F). The maximum can reach 31°C (89°F) and the minimum can be as low as 18°C (64°F). This makes it an ideal time for travelers looking to enjoy mild and pleasant weather.

April Weather in Santiago: Daily Temperature Highs, Lows, and Averages

The chart illustrates April temperature patterns in Santiago, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Santiago, April typically has an average temperature of 24°C (76°F), with highs reaching up to 31°C (89°F) and lows dropping to around 18°C (64°F).
JanFebMarAprMayJunJulAugSepOctNovDec747576767575757473737374
Data source: Temperature data for Santiago 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 Santiago

In Santiago in April, the precipitation amount is 118 mm (4.6 in) spread over 24 days.

April Precipitation Trends in Santiago

The chart displays monthly precipitation patterns in Santiago, 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 Santiago, April typically receives around 118 mm (4.6 inches) of precipitation spread over approximately 24 days.
JanFebMarAprMayJunJulAugSepOctNovDec28131811841239729739346163925172
Data source: Precipitation data for April generated using information from the Copernicus Climate Change Service.
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April Humidity in Santiago

In Santiago in April humidity is 67%. With an average temperature of 24°C (76°F), this humidity feels like a warm, steamy embrace, making travel slightly more challenging as you navigate through the thick air.

April Average Humidity in Santiago

This chart illustrates the average monthly humidity levels in Santiago, 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 Santiago is approximately 67%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec68%68%66%67%69%84%85%82%81%80%80%73%
Data source: Humidity data for April generated using information from the Copernicus Climate Change Service.

April UV Index in Santiago

In Santiago in April, the maximum UV index reaches an alarming 15, which falls into the extreme Exposure Category. With a time to burn of just 10 minutes, it's crucial to take precautions. For detailed information, you can check the Hourly UV Index in Santiago.

Maximum UV Index Levels in Santiago for April

The chart shows the monthly maximum UV Index (UVI) for Santiago 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 Santiago typically reaches 15, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec121315151414141313141210
Data source: Santiago 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 Santiago Compares to Other Months

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

This table compares monthly weather conditions in Santiago, showing how April’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather23°C (74°F)28 mm (1.1 inches)68%extreme
February Weather24°C (76°F)13 mm (0.5 inches)68%extreme
March Weather25°C (77°F)18 mm (0.7 inches)66%extreme
April Weather24°C (76°F)118 mm (4.6 inches)67%extreme
May Weather24°C (75°F)412 mm (16.2 inches)69%extreme
June Weather24°C (75°F)397 mm (15.6 inches)84%extreme
July Weather24°C (75°F)296 mm (11.7 inches)85%extreme
August Weather23°C (74°F)393 mm (15.5 inches)82%extreme
September Weather23°C (74°F)461 mm (18.2 inches)81%extreme
October Weather23°C (73°F)639 mm (25.2 inches)80%extreme
November Weather23°C (74°F)251 mm (9.9 inches)80%extreme
December Weather23°C (74°F)72 mm (2.8 inches)72%very high

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