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July Weather in San Isidro, Costa Rica

Last updated: August 23, 2025

In San Isidro, Costa Rica, the average temperature in July hovers around 22°C (73°F), with a minimum of 20°C (67°F) and a maximum of 25°C (78°F). Expect a substantial precipitation amount of 784 mm (30.8 in) spread over 31 days, and a notably high average humidity of 85%. This combination creates a unique and lush climate, perfect for those who enjoy vibrant, tropical surroundings!

July Temperature in San Isidro

In July in San Isidro, the average temperature is 22°C (73°F), with maximums reaching 25°C (78°F) and minimums dropping to as low as 20°C (67°F). This comfortable climate makes it an ideal destination for travelers seeking pleasant weather.

July Weather in San Isidro: Daily Temperature Highs, Lows, and Averages

The chart illustrates July temperature patterns in San Isidro, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In San Isidro, July typically has an average temperature of 22°C (73°F), with highs reaching up to 25°C (78°F) and lows dropping to around 20°C (67°F).
JanFebMarAprMayJunJulAugSepOctNovDec727273737373727272727271
Data source: Temperature data for San Isidro 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.

July Precipitation in San Isidro

In San Isidro in July, the precipitation amount is 784 mm (30.8 in) over the course of 31 days.

July Precipitation Trends in San Isidro

The chart displays monthly precipitation patterns in San Isidro, with values for each month alongside July’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how July’s conditions compare to those of other months. In San Isidro, July typically receives around 784 mm (30.8 inches) of precipitation spread over approximately 31 days.
JanFebMarAprMayJunJulAugSepOctNovDec19499120350742663784838766937885354
Data source: Precipitation data for July generated using information from the Copernicus Climate Change Service.
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July Humidity in San Isidro

In San Isidro in July, humidity is 85%. With an average temperature of 22°C (73°F), this humidity feels like an enveloping blanket of warmth, making it essential to stay hydrated while traveling and seek out shaded areas to refresh and cool down.

July Average Humidity in San Isidro

This chart illustrates the average monthly humidity levels in San Isidro, with July’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In July, average humidity in San Isidro is approximately 85%, 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 July generated using information from the Copernicus Climate Change Service.

July UV Index in San Isidro

In San Isidro in July, 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 Isidro, you can check here.

Maximum UV Index Levels in San Isidro for July

The chart shows the monthly maximum UV Index (UVI) for San Isidro in July, 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 July, the maximum UV index in San Isidro typically reaches 14, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec121415151514141414141211
Data source: San Isidro July 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 July Weather in San Isidro Compares to Other Months

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

This table compares monthly weather conditions in San Isidro, showing how July’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather22°C (72°F)194 mm (7.6 inches)68%extreme
February Weather22°C (73°F)99 mm (3.9 inches)68%extreme
March Weather23°C (73°F)120 mm (4.7 inches)66%extreme
April Weather23°C (73°F)350 mm (13.8 inches)67%extreme
May Weather23°C (73°F)742 mm (29.2 inches)69%extreme
June Weather23°C (73°F)663 mm (26.1 inches)84%extreme
July Weather22°C (73°F)784 mm (30.8 inches)85%extreme
August Weather22°C (73°F)838 mm (33.0 inches)82%extreme
September Weather22°C (72°F)766 mm (30.1 inches)81%extreme
October Weather22°C (72°F)937 mm (36.9 inches)80%extreme
November Weather22°C (72°F)885 mm (34.8 inches)80%extreme
December Weather22°C (72°F)354 mm (13.9 inches)72%extreme

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