Del Mar (CA) Monthly Rainfall & Precipitation

This page shows both the average monthly rainfall and the number of rainy days in Del Mar, California, United States of America. This average is based on long-term data collected between 1990 and 2020. Let's explore the details to provide you with a complete overview.

Del Mar has a dry climate with very low precipitation, averaging 238 mm (9.4 in) of rainfall annually.

Monthly Precipitation Levels

The average number of days each month with precipitation (> 0.2 mm (0.01 in))

The climate in Del Mar shows significant variation throughout the year. Expect 62 mm (2.4 in) of precipitation during the wettest month December, distributed over 7 rainy days.

In contrast, June offers drier and sunnier days, with around 0.6 mm (0.02 in) of rainfall over a single rainy day.

December, the wettest month, has a maximum daytime temperature of 18°C (64°F). The city receives 231 hours of sunshine in this period. During the driest month June you can expect a temperature of 21°C (70°F). For more detailed insights into the city's temperatures, visit our Del Mar Temperature page.

Annual Rainfall in the United States of America: City Comparison

The map below shows the annual precipitation across the United States of America. You can also select the different months in case you are interested in a specific month.

Annual

Annual

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Legend

heavy rainfall

high

moderate

low

almost none

Heavy annual rainfall has been defined as more than 1000 mm (39 in) precipitation. High: 600 mm (24 in) to 1000 mm (39 in). Moderate: 250 mm (9.8 in) to 600 mm (24 in). Low: less than 250 mm (9.8 in).

Del Mar vs World: Rainfall Compared

Del Mar's average annual precipitation is 238 mm (9.4 in). Let's compare this to some popular worldwide tourist destinations:

New York City, USA, receives 1276 mm (50 in) of rainfall annually, with precipitation evenly distributed throughout the year.

In Shanghai, China, the annual average precipitation is 1347 mm (53 in), with a humid subtropical climate.

In Brisbane, Australia, the annual precipitation is 979 mm (39 in), making it wetter than Sydney.

Bangkok, Thailand, experiences a tropical monsoon climate with 1668 mm (66 in) of annual rainfall, with the heaviest precipitation occurring during September and October.

How is Precipitation Measured?

Precipitation amounts are measured using specific gauges installed at weather stations, collecting both rain and snow and any other type of precipitation. Rainfall is measured directly in millimeters, while that from snow and ice is obtained by melting it. Automated systems often incorporate heaters to make this easier.

Information from these stations is transmitted via Wi-Fi, satellite, GPS, or telephone connections to central monitoring networks. This information is immediately updated and integrated into weather models and forecasts.

Rainy Seasons: Many parts of the world have well-defined wet seasons where precipitation is distinctly higher. These are normally accompanied by lush vegetation and temperature patterns.

Dry Seasons: In areas where the climate is either desert or Mediterranean, the amount of precipitation is drastically reduced, leading to a shortage of water and arid conditions.

Interesting weather facts

"Ginger" was the longest-lasting Atlantic tropical storm, which spun around the open ocean for 28 days in 1971.
The world's largest snowflake was recorded in the Guinness Book of Records, at 38 cm (15 inches) wide and 20 cm (7.9 inches) thick. The snowflake fell at Fort Keogh, Montana, USA, on 28 January 1887.
The greatest snowfall recorded was on Mt. Rainier, Washington State, USA—over 31.5 meters (103 feet) fell during the winter of 1972.

For more detailed information about Del Mar (CA)'s weather, including sunshine hours, humidity levels, and temperature data, visit our Del Mar (CA) Climate page.

Current rainfall in Del Mar (CA)

10-Day Forecast