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May Weather in San Rafael Arriba, Costa Rica

Last updated: August 23, 2025

In May, the average temperature in San Rafael Arriba, Costa Rica hovers around 19°C (67°F). Visitors can expect a minimum of 14°C (58°F) and a comfortable maximum of 26°C (79°F). Be prepared for significant rainfall, with total precipitation reaching 425 mm (16.7 in) over 29 days. With an average humidity of 69%, it's a perfect time to experience the lush surroundings this season offers!

May Temperature in San Rafael Arriba

In May in San Rafael Arriba, the average temperature is 19°C (67°F). Maximums can reach 26°C (79°F), while minimums can drop to as low as 14°C (58°F). This mild climate makes San Rafael Arriba an ideal destination for travelers seeking comfortable weather.

May Weather in San Rafael Arriba: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in San Rafael Arriba, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In San Rafael Arriba, May typically has an average temperature of 19°C (67°F), with highs reaching up to 26°C (79°F) and lows dropping to around 14°C (58°F).
JanFebMarAprMayJunJulAugSepOctNovDec636364666666666666656564
Data source: Temperature data for San Rafael Arriba 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.

May Precipitation in San Rafael Arriba

In San Rafael Arriba in May, the total precipitation amount is 425 mm (16.7 in) spread over 29 days.

May Precipitation Trends in San Rafael Arriba

The chart displays monthly precipitation patterns in San Rafael Arriba, with values for each month alongside May’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how May’s conditions compare to those of other months. In San Rafael Arriba, May typically receives around 425 mm (16.7 inches) of precipitation spread over approximately 29 days.
JanFebMarAprMayJunJulAugSepOctNovDec934349113425341266304380517260156
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in San Rafael Arriba

In San Rafael Arriba in May, humidity is 69%. With an average temperature of 19°C (67°F), this humidity feels like a warm, tropical embrace, making travel feel both refreshing and slightly heavy, urging you to take leisurely pauses to savor the scenery.

May Average Humidity in San Rafael Arriba

This chart illustrates the average monthly humidity levels in San Rafael Arriba, with May’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In May, average humidity in San Rafael Arriba is approximately 69%, 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 May generated using information from the Copernicus Climate Change Service.

May UV Index in San Rafael Arriba

In San Rafael Arriba in May, 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 Rafael Arriba, you can check here.

Maximum UV Index Levels in San Rafael Arriba for May

The chart shows the monthly maximum UV Index (UVI) for San Rafael Arriba in May, 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 May, the maximum UV index in San Rafael Arriba typically reaches 14, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec121415161414141414151211
Data source: San Rafael Arriba May 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 May Weather in San Rafael Arriba Compares to Other Months

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

This table compares monthly weather conditions in San Rafael Arriba, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather17°C (63°F)93 mm (3.7 inches)68%extreme
February Weather17°C (64°F)43 mm (1.7 inches)68%extreme
March Weather18°C (64°F)49 mm (1.9 inches)66%extreme
April Weather19°C (66°F)113 mm (4.4 inches)67%extreme
May Weather19°C (67°F)425 mm (16.7 inches)69%extreme
June Weather19°C (67°F)341 mm (13.4 inches)84%extreme
July Weather19°C (66°F)266 mm (10.5 inches)85%extreme
August Weather19°C (66°F)304 mm (12.0 inches)82%extreme
September Weather19°C (66°F)379 mm (14.9 inches)81%extreme
October Weather19°C (66°F)517 mm (20.4 inches)80%extreme
November Weather18°C (65°F)260 mm (10.3 inches)80%extreme
December Weather18°C (64°F)156 mm (6.1 inches)72%extreme

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