March Weather in Monterey, United States

Last updated: June 24, 2025

In March, the average temperature in Monterey, United States hovers around 1°C (34°F), with lows plunging to -18°C (-1°F) and highs reaching up to 22°C (72°F). Expect a fair amount of rain, as 87 mm (3.4 in) of precipitation typically falls over 11 days. Moreover, the humidity remains high at an average of 86%, adding to the chilly atmosphere.

March Temperature in Monterey

In March in Monterey, the average temperature is 1°C (34°F). The maximum can reach 22°C (72°F) and the minimum can be as low as -18°C (-1°F). Be prepared for a wide range of temperatures and pack accordingly for your visit.

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 1°C (34°F), with highs reaching up to 22°C (72°F) and lows dropping to around -18°C (-1°F).

Data source: Temperature data for Monterey generated using information from the Copernicus Climate Change Service.

March Precipitation in Monterey

In Monterey in March, the precipitation amount is 87 mm (3.4 in) over the course of 11 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 87 mm (3.4 inches) of precipitation spread over approximately 11 days.

Data source: Precipitation data for March generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

March Humidity in Monterey

In Monterey in March, humidity is 86%. With an average temperature of 1°C (34°F), this humidity feels like a chilling embrace, making outdoor adventures brisk and invigorating but challenging for travel.

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.

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 6, which corresponds to a high Exposure Category. The time to burn is approximately 25 minutes. To find the hourly UV index in Monterey, you can refer to this 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 6, which falls under the high exposure category.

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.
	Temperature	Precipitation	Humidity	UV
January Weather	-4°C (26°F)	81 mm (3.2 inches)	89%	moderate
February Weather	-2°C (29°F)	98 mm (3.9 inches)	88%	moderate
March Weather	1°C (34°F)	87 mm (3.4 inches)	86%	high
April Weather	8°C (46°F)	132 mm (5.2 inches)	84%	very high
May Weather	14°C (57°F)	115 mm (4.5 inches)	76%	very high
June Weather	19°C (66°F)	85 mm (3.4 inches)	72%	very high
July Weather	22°C (72°F)	136 mm (5.4 inches)	66%	very high
August Weather	21°C (70°F)	107 mm (4.2 inches)	64%	very high
September Weather	17°C (64°F)	111 mm (4.4 inches)	72%	very high
October Weather	11°C (53°F)	152 mm (6.0 inches)	81%	high
November Weather	4°C (39°F)	101 mm (4.0 inches)	87%	moderate
December Weather	-1°C (30°F)	113 mm (4.4 inches)	84%	low