Grover Beach (CA) Monthly Rainfall & Precipitation

This page shows both the average monthly rainfall and the number of rainy days in Grover Beach, California, United States of America. The numbers reflect climate data gathered over a 30-year period, from 1990 to 2020. Let's explore the details to provide you with a complete overview.

With annual rainfall averaging 297 mm (12 in), Grover Beach maintains relatively low precipitation levels throughout the seasons. However, it does have a distinct dry season during certain months, creating distinct patterns as demonstrated in our detailed graph below.

Monthly Precipitation Levels

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

The seasons in Grover Beach, bring significant changes in precipitation. The wettest month, December, receives moderate rainfall, with an average of 69 mm (2.7 in) of precipitation. This rainfall is distributed across 8 rainy days.

December, the wettest month, has a maximum daytime temperature of 18°C (64°F). The city receives 220 hours of sunshine in this period. During the driest month August you can expect a temperature of 21°C (70°F). For more detailed insights into the city's temperatures, visit our Grover Beach Temperature page.

Grover Beach's average annual precipitation is 297 mm (12 in). Let's compare this to some popular worldwide tourist destinations:

In Barcelona, Spain, the average annual precipitation is 644 mm (25 in), evenly distributed across the year with no extreme wet or dry seasons.

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

In Tokyo, Japan, the average annual precipitation is 1528 mm (60 in), with significant summer rains due to typhoon season.

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.

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