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April Weather in San Francisco, Guatemala

Last updated: August 23, 2025

In April, the average temperature in San Francisco, Guatemala is a warm 30°C (87°F), making it an inviting destination. However, temperatures can vary significantly, with a minimum of 17°C (62°F) and a maximum soaring up to 44°C (111°F). Visitors can expect 40 mm (1.6 in) of precipitation over approximately 5 days, accompanied by an average humidity level of 52%, ensuring a tropical feel throughout the month.

April Temperature in San Francisco

In April in San Francisco, the average temperature is 30°C (87°F). Maximums can reach 44°C (111°F), while minimums can drop to as low as 17°C (62°F). Be prepared for warm to hot weather, ideal for outdoor adventures and exploring the vibrant culture of San Francisco.

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

The chart illustrates April temperature patterns in San Francisco, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In San Francisco, April typically has an average temperature of 30°C (87°F), with highs reaching up to 44°C (111°F) and lows dropping to around 17°C (62°F).
JanFebMarAprMayJunJulAugSepOctNovDec747881868783838382807775
Data source: Temperature data for San Francisco 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 Francisco

In San Francisco in April, the precipitation amount is 40 mm (1.6 in) over the course of 5 days.

April Precipitation Trends in San Francisco

The chart displays monthly precipitation patterns in San Francisco, 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 Francisco, April typically receives around 40 mm (1.6 inches) of precipitation spread over approximately 5 days.
JanFebMarAprMayJunJulAugSepOctNovDec4323314010424713615821520011055
Data source: Precipitation data for April generated using information from the Copernicus Climate Change Service.
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April Humidity in San Francisco

In San Francisco in April, humidity is 52%. With an average temperature of 30°C (87°F), this humidity feels like a warm embrace that can leave travelers feeling sticky and slightly fatigued, making it essential to stay hydrated and take breaks in the shade.

April Average Humidity in San Francisco

This chart illustrates the average monthly humidity levels in San Francisco, 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 Francisco is approximately 52%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%73%59%53%54%55%61%71%77%78%82%86%
Data source: Humidity data for April generated using information from the Copernicus Climate Change Service.

April UV Index in San Francisco

In San Francisco in April, 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 Francisco, you can check here.

Maximum UV Index Levels in San Francisco for April

The chart shows the monthly maximum UV Index (UVI) for San Francisco 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 Francisco typically reaches 14, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec9111314131313131312108
Data source: San Francisco 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 Francisco Compares to Other Months

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

This table compares monthly weather conditions in San Francisco, showing how April’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather24°C (75°F)43 mm (1.7 inches)84%very high
February Weather25°C (78°F)23 mm (0.9 inches)73%extreme
March Weather27°C (81°F)31 mm (1.2 inches)59%extreme
April Weather30°C (87°F)40 mm (1.6 inches)52%extreme
May Weather31°C (87°F)104 mm (4.1 inches)53%extreme
June Weather28°C (83°F)247 mm (9.7 inches)55%extreme
July Weather28°C (83°F)136 mm (5.4 inches)61%extreme
August Weather28°C (83°F)158 mm (6.2 inches)71%extreme
September Weather28°C (82°F)215 mm (8.4 inches)77%extreme
October Weather27°C (80°F)200 mm (7.9 inches)78%extreme
November Weather25°C (77°F)110 mm (4.3 inches)82%very high
December Weather24°C (75°F)55 mm (2.2 inches)86%very high

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