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April Weather in Carlsbad, United States

Last updated: June 24, 2025

In April, the average temperature in Carlsbad, United States is a balmy 19°C (67°F). However, be prepared for a range, as temperatures can drop to a cool 2°C (35°F) or soar up to a sweltering 37°C (99°F). During this month, expect about 51 mm (2.0 in) of precipitation spread over 6 days, and enjoy the average humidity of 70% that might give you a pleasant, tropical feel!

April Temperature in Carlsbad

In April in Carlsbad, the average temperature is 19°C (67°F). Maximums can reach 37°C (99°F), while minimums can drop to as low as 2°C (35°F). Be prepared for a wide range of temperatures when traveling during this month.

April Weather in Carlsbad: Daily Temperature Highs, Lows, and Averages

The chart illustrates April temperature patterns in Carlsbad, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Carlsbad, April typically has an average temperature of 19°C (67°F), with highs reaching up to 37°C (99°F) and lows dropping to around 2°C (35°F).
JanFebMarAprMayJunJulAugSepOctNovDec465060667581848477675650
Data source: Temperature data for Carlsbad 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 Carlsbad

In Carlsbad in April, the precipitation amount is 51 mm (2.0 in) over the course of 6 days.

April Precipitation Trends in Carlsbad

The chart displays monthly precipitation patterns in Carlsbad, 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 Carlsbad, April typically receives around 51 mm (2.0 inches) of precipitation spread over approximately 6 days.
JanFebMarAprMayJunJulAugSepOctNovDec2322485110147213473512825
Data source: Precipitation data for April generated using information from the Copernicus Climate Change Service.
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April Humidity in Carlsbad

In Carlsbad in April humidity is 70%. With an average temperature of 19°C (67°F), this humidity feels like a warm blanket wrapping around you, making traveling somewhat uncomfortable and sticky, as the air feels dense and every movement requires a bit more effort.

April Average Humidity in Carlsbad

This chart illustrates the average monthly humidity levels in Carlsbad, 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 Carlsbad is approximately 70%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec74%74%69%70%77%76%66%60%67%72%84%85%
Data source: Humidity data for April generated using information from the Copernicus Climate Change Service.

April UV Index in Carlsbad

In Carlsbad in April, the maximum UV index reaches 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, you can check the Hourly UV Index in Carlsbad.

Maximum UV Index Levels in Carlsbad for April

The chart shows the monthly maximum UV Index (UVI) for Carlsbad 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 Carlsbad typically reaches 11, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec579111212121211864
Data source: Carlsbad 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 Carlsbad Compares to Other Months

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

This table compares monthly weather conditions in Carlsbad, showing how April’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather8°C (47°F)23 mm (0.9 inches)74%moderate
February Weather10°C (50°F)22 mm (0.9 inches)74%high
March Weather16°C (61°F)48 mm (1.9 inches)68%very high
April Weather19°C (67°F)51 mm (2.0 inches)70%extreme
May Weather24°C (75°F)101 mm (4.0 inches)77%extreme
June Weather27°C (82°F)47 mm (1.8 inches)76%extreme
July Weather29°C (85°F)21 mm (0.8 inches)66%extreme
August Weather29°C (84°F)34 mm (1.3 inches)60%extreme
September Weather25°C (78°F)73 mm (2.9 inches)67%extreme
October Weather19°C (67°F)51 mm (2.0 inches)72%very high
November Weather13°C (56°F)28 mm (1.1 inches)83%high
December Weather10°C (51°F)25 mm (1.0 inches)85%moderate

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