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May Weather in Carlsbad, United States

Last updated: June 24, 2025

In Carlsbad, United States, the average temperature in May reaches a warm 24°C (75°F). Throughout the month, expect a minimum of 6°C (43°F) and a scorching maximum of 42°C (107°F). With an average humidity of 77%, you'll likely feel the warmth even more. Be prepared for some rain as well, with 101 mm (4.0 in) of precipitation over 12 days.

May Temperature in Carlsbad

In May in Carlsbad, the average temperature is 24°C (75°F), with maximums reaching up to 42°C (107°F) and minimums dropping as low as 6°C (43°F). Be prepared for a wide range of temperatures if you're traveling during this time!

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

The chart illustrates May 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, May typically has an average temperature of 24°C (75°F), with highs reaching up to 42°C (107°F) and lows dropping to around 6°C (43°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.

May Precipitation in Carlsbad

In Carlsbad in May, the precipitation amount is 101 mm (4.0 in) spread over 12 days.

May Precipitation Trends in Carlsbad

The chart displays monthly precipitation patterns in Carlsbad, 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 Carlsbad, May typically receives around 101 mm (4.0 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec2322485110147213473512825
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Carlsbad

In Carlsbad in May humidity is 77%. With an average temperature of 24°C (75°F), this humidity feels like a warm, enveloping blanket that can make outdoor activities feel stifling and may require frequent breaks to stay hydrated while exploring.

May Average Humidity in Carlsbad

This chart illustrates the average monthly humidity levels in Carlsbad, 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 Carlsbad is approximately 77%, 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 May generated using information from the Copernicus Climate Change Service.

May UV Index in Carlsbad

In Carlsbad in May, the maximum UV index is 12, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, underscoring the importance of sun protection. For detailed information, you can check the Hourly UV Index in Carlsbad.

Maximum UV Index Levels in Carlsbad for May

The chart shows the monthly maximum UV Index (UVI) for Carlsbad 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 Carlsbad typically reaches 12, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec579111212121211864
Data source: Carlsbad 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 Carlsbad Compares to Other Months

Weather in Carlsbad varies notably across the year, with each month offering distinct climate conditions. This page compares May’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 May’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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