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March Weather in Monterey, United States

Last updated: June 24, 2025

In March, the average temperature in Monterey, United States hovers around 5°C (41°F), with a range that can dip to a chilly -16°C (3°F) and peak at a warm 26°C (79°F). Expect a fair amount of rainfall, as 86 mm (3.4 in) of precipitation is recorded over 13 days, contributing to an average humidity of 86%. Stay prepared for a variety of weather conditions!

March Temperature in Monterey

In March in Monterey, the average temperature is 5°C (41°F). Maximum temperatures can reach 26°C (79°F), while minimum temperatures can drop as low as -16°C (3°F). Travelers should be prepared for a wide range of weather conditions during this time.

March Weather in Monterey: Daily Temperature Highs, Lows, and Averages

The chart illustrates March temperature patterns in Monterey, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Monterey, March typically has an average temperature of 5°C (41°F), with highs reaching up to 26°C (79°F) and lows dropping to around -16°C (3°F).
JanFebMarAprMayJunJulAugSepOctNovDec303640505966706863544035
Data source: Temperature data for Monterey 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.

March Precipitation in Monterey

In Monterey, in March, the precipitation amount is 86 mm (3.4 in) over the course of 13 days.

March Precipitation Trends in Monterey

The chart displays monthly precipitation patterns in Monterey, with values for each month alongside March’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how March’s conditions compare to those of other months. In Monterey, March typically receives around 86 mm (3.4 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec7611586126151107861291171167296
Data source: Precipitation data for March generated using information from the Copernicus Climate Change Service.
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March Humidity in Monterey

In Monterey in March humidity is 86%. With an average temperature of 5°C (41°F), this humidity feels like a heavy, damp blanket wrapping around you, making outdoor activities uncomfortable and travel quite challenging due to the chill combined with the stickiness in the air.

March Average Humidity in Monterey

This chart illustrates the average monthly humidity levels in Monterey, with March’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In March, average humidity in Monterey is approximately 86%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec86%86%86%84%78%79%70%59%68%80%87%85%
Data source: Humidity data for March generated using information from the Copernicus Climate Change Service.

March UV Index in Monterey

In Monterey in March, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Monterey.

Maximum UV Index Levels in Monterey for March

The chart shows the monthly maximum UV Index (UVI) for Monterey in March, 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 March, the maximum UV index in Monterey typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec36810111111109753
Data source: Monterey March 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 March Weather in Monterey Compares to Other Months

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

This table compares monthly weather conditions in Monterey, showing how March’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-1°C (31°F)76 mm (3.0 inches)86%moderate
February Weather2°C (36°F)115 mm (4.5 inches)86%high
March Weather5°C (41°F)86 mm (3.4 inches)86%very high
April Weather10°C (50°F)126 mm (5.0 inches)84%very high
May Weather15°C (60°F)151 mm (5.9 inches)78%extreme
June Weather19°C (66°F)107 mm (4.2 inches)79%extreme
July Weather21°C (70°F)86 mm (3.4 inches)70%extreme
August Weather20°C (68°F)129 mm (5.1 inches)59%very high
September Weather17°C (64°F)117 mm (4.6 inches)68%very high
October Weather12°C (54°F)115 mm (4.5 inches)80%high
November Weather4°C (40°F)72 mm (2.8 inches)86%moderate
December Weather2°C (35°F)96 mm (3.8 inches)85%moderate

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