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April Weather in San Fernando, United States

Last updated: June 24, 2025

In April, the average temperature in San Fernando, United States is a pleasant 17°C (63°F), making it a great time to explore. However, prepare for a range, with minimum temperatures dipping to 6°C (44°F) and soaring as high as 36°C (96°F). Expect some rain, too, with 20 mm (0.8 in) of precipitation over about 3 days. The air remains comfortably humid, with an average humidity of 68%.

April Temperature in San Fernando

In April in San Fernando, the average temperature is 17°C (63°F). Maximums can reach 36°C (96°F), while minimums can drop as low as 6°C (44°F). Be prepared for a wide range of temperatures when traveling during this month.

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

The chart illustrates April temperature patterns in San Fernando, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In San Fernando, April typically has an average temperature of 17°C (63°F), with highs reaching up to 36°C (96°F) and lows dropping to around 6°C (44°F).
JanFebMarAprMayJunJulAugSepOctNovDec545557636571777774686154
Data source: Temperature data for San Fernando 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 Fernando

In San Fernando in April, the precipitation amount is 20 mm (0.8 in) accumulated over a period of 3 days.

April Precipitation Trends in San Fernando

The chart displays monthly precipitation patterns in San Fernando, 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 Fernando, April typically receives around 20 mm (0.8 inches) of precipitation spread over approximately 3 days.
JanFebMarAprMayJunJulAugSepOctNovDec7762852015211392084
Data source: Precipitation data for April generated using information from the Copernicus Climate Change Service.
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April Humidity in San Fernando

In San Fernando in April humidity is 68%. With an average temperature of 17°C (63°F), this humidity feels like a warm, gentle embrace, making it perfect for exploring local attractions but slightly challenging for outdoor activities during the hottest parts of the day.

April Average Humidity in San Fernando

This chart illustrates the average monthly humidity levels in San Fernando, 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 Fernando is approximately 68%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec78%82%76%68%58%52%46%39%48%59%72%76%
Data source: Humidity data for April generated using information from the Copernicus Climate Change Service.

April UV Index in San Fernando

In San Fernando in April, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in San Fernando.

Maximum UV Index Levels in San Fernando for April

The chart shows the monthly maximum UV Index (UVI) for San Fernando 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 Fernando typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec468101111121110754
Data source: San Fernando 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 Fernando Compares to Other Months

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

This table compares monthly weather conditions in San Fernando, showing how April’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather12°C (54°F)77 mm (3.0 inches)78%moderate
February Weather13°C (55°F)62 mm (2.5 inches)82%high
March Weather14°C (57°F)85 mm (3.3 inches)75%very high
April Weather17°C (63°F)20 mm (0.8 inches)68%very high
May Weather18°C (65°F)15 mm (0.6 inches)57%extreme
June Weather22°C (71°F)2 mm (0.1 inches)52%extreme
July Weather25°C (77°F)1 mm (0.0 inches)46%extreme
August Weather25°C (78°F)1 mm (0.0 inches)39%extreme
September Weather23°C (75°F)3 mm (0.1 inches)48%very high
October Weather20°C (69°F)9 mm (0.4 inches)59%high
November Weather16°C (62°F)20 mm (0.8 inches)72%moderate
December Weather12°C (54°F)84 mm (3.3 inches)76%moderate

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