Otay Mesa (CA) Monthly Rainfall & Precipitation

This page shows both the average monthly rainfall and the number of rainy days in Otay Mesa, California, United States of America. Long-term data from 1990 to 2020 was used to calculate these averages. Now, let's break down all the details for a clearer picture.

Otay Mesa sits in an arid zone with minimal moisture, averaging 234 mm (9.2 in) of rainfall per year.

Monthly Precipitation Levels

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

The seasons in Otay Mesa, bring significant changes in precipitation. The wettest month, December, receives moderate rainfall, with an average of 61 mm (2.4 in) of precipitation. This rainfall is distributed across 8 rainy days.

In contrast, the driest month, June, experiences much less rainfall, totaling 0.5 mm (0.02 in) over 0 rainy days. These distinct seasonal differences provide diverse experiences throughout the year.

December, the wettest month, has a maximum daytime temperature of 19°C (66°F). The city receives 248 hours of sunshine in this period. During the driest month June you can expect a temperature of 24°C (75°F). For more detailed insights into the city's temperatures, visit our Otay Mesa 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.

Otay Mesa vs World: Rainfall Compared

Otay Mesa's average annual precipitation is 234 mm (9.2 in). Let's compare this to some popular worldwide tourist destinations:

Athens, Greece, receives an average annual precipitation of 400 mm (16 in), making it one of the drier Mediterranean climates with rainfall mostly in winter.

Osaka, Japan, experiences 1507 mm (59 in) of rainfall annually, spread across the year with wetter summers.

Melbourne, Australia, has 690 mm (27 in) of rainfall annually, spread fairly evenly throughout the year.

Ho Chi Minh City, Vietnam, receives 1955 mm (77 in) of annual rainfall, with a pronounced wet season from May to November, typical of its tropical monsoon climate.

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.

• "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 Otay Mesa (CA)'s weather, including sunshine hours, humidity levels, and temperature data, visit our Otay Mesa (CA) Climate page.