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April Weather in San Miguel, Costa Rica

Last updated: August 23, 2025

In San Miguel, Costa Rica, the average temperature in April hovers around 18°C (65°F). Expect a minimum of 13°C (55°F) and a maximum of 26°C (78°F), making it a pleasant time of year. However, be prepared for 155 mm (6.1 in) of precipitation spread across 23 days, contributing to an average humidity of 67%. Enjoy the mild conditions while staying equipped for some rainy spells!

April Temperature in San Miguel

In April in San Miguel, the average temperature is 18°C (65°F). The maximum can reach 26°C (78°F), while the minimum can drop as low as 13°C (55°F). This mild weather makes it an ideal time for outdoor activities and sightseeing in San Miguel.

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

The chart illustrates April temperature patterns in San Miguel, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In San Miguel, April typically has an average temperature of 18°C (65°F), with highs reaching up to 26°C (78°F) and lows dropping to around 13°C (55°F).
JanFebMarAprMayJunJulAugSepOctNovDec636464656565656564646463
Data source: Temperature data for San Miguel 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 Miguel

In San Miguel in April, the total precipitation amount is 155 mm (6.1 in) spread over 23 days.

April Precipitation Trends in San Miguel

The chart displays monthly precipitation patterns in San Miguel, 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 Miguel, April typically receives around 155 mm (6.1 inches) of precipitation spread over approximately 23 days.
JanFebMarAprMayJunJulAugSepOctNovDec35192815553239931540350860127278
Data source: Precipitation data for April generated using information from the Copernicus Climate Change Service.
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April Humidity in San Miguel

In San Miguel in April humidity is 67%. With an average temperature of 18°C (65°F), this humidity feels like a mild blanket wrapping around you, making outdoor activities feel pleasantly refreshing, yet you may find yourself reaching for a drink more often to stay hydrated while exploring the sights.

April Average Humidity in San Miguel

This chart illustrates the average monthly humidity levels in San Miguel, 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 Miguel 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 San Miguel

In San Miguel 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 Miguel.

Maximum UV Index Levels in San Miguel for April

The chart shows the monthly maximum UV Index (UVI) for San Miguel 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 Miguel typically reaches 16, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec121415161514151414141211
Data source: San Miguel 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 Miguel Compares to Other Months

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

This table compares monthly weather conditions in San Miguel, showing how April’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather17°C (63°F)35 mm (1.4 inches)68%extreme
February Weather18°C (64°F)19 mm (0.8 inches)68%extreme
March Weather18°C (65°F)28 mm (1.1 inches)66%extreme
April Weather18°C (65°F)155 mm (6.1 inches)67%extreme
May Weather18°C (65°F)532 mm (21.0 inches)69%extreme
June Weather18°C (66°F)399 mm (15.7 inches)84%extreme
July Weather18°C (65°F)315 mm (12.4 inches)85%extreme
August Weather18°C (65°F)403 mm (15.9 inches)82%extreme
September Weather18°C (65°F)508 mm (20.0 inches)81%extreme
October Weather18°C (64°F)601 mm (23.7 inches)80%extreme
November Weather18°C (64°F)272 mm (10.7 inches)80%extreme
December Weather17°C (64°F)78 mm (3.1 inches)72%extreme

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