San Carlos (CA) Monthly Rainfall & Precipitation

This page shows both the average monthly rainfall and the number of rainy days in San Carlos, California, United States of America. Long-term data from 1990 to 2020 was used to calculate these averages. Now, let's explore all the details to give you a full picture.

San Carlos has a relatively dry climate with low precipitation, averaging 402 mm (16 in) of rainfall annually. It experiences a distinct dry season during certain months. Refer to our detailed charts below to see the seasonal variation.

Monthly Precipitation Levels

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

San Carlos can be quite wet during December, receiving approximately 97 mm (3.8 in) of precipitation over 12 rainy days.

In contrast July, experiences much drier conditions, with 0 mm (0 in) of rainfall, spread across 0 rainy days.

December, the wettest month, has a maximum daytime temperature of 15°C (59°F). The city receives 160 hours of sunshine in this period. During the driest month July you can expect a temperature of 26°C (79°F). For more detailed insights into the city's temperatures, visit our San Carlos Temperature page.

San Carlos's average annual precipitation is 402 mm (16 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.

Beijing, China, receives 560 mm (22 in) of annual precipitation, concentrated in the summer months.

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.

• The U.S. has a significant number of thunderstorms every year, with over 14.6 million taking place across the world annually.
• Approximately 70% of lightning bolts strike land rather than oceans.
• A storm named John was the longest-lasting Pacific tropical storm, continuing for 31 days. As it crossed the dateline twice, it changed status from a hurricane to a typhoon and back to a hurricane.

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