Santa Rosa Rainfall & Precipitation: Monthly Averages and Year-Round Insights

This page shows the average amount of rainfall per month in Santa Rosa. The numbers are calculated over a 30-year period to provide a reliable average. Let’s explore the details in depth to provide you with a complete overview.

Santa Rosa has a relatively rainy climate with high precipitation levels, averaging 2335 mm of rainfall annually.

Monthly Precipitation Levels

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

Significant seasonal changes in precipitation occur throughout the year. During the wet season, July receives substantial rainfall, averaging 431 mm of precipitation, recorded across 19 rainy days.

In contrast, the drier season, February brings less rainfall, with 39 mm over 4 rainy days.

July, the wettest month, has a maximum daytime temperature of 31°C. The city receives 135 hours of sunshine in this period. During the driest month February you can expect a temperature of 30°C. For more detailed insights into the city’s temperatures, visit our Santa Rosa Temperature page.

Annual Precipitation in Philippines

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

Amsterdam Precipitation Compared World Wide

Santa Rosa’s average annual precipitation is 2335 mm. Let’s compare this to some popular worldwide tourist destinations:

Boston, USA, experiences 1238 mm of annual precipitation, including significant snowfall during the winter.

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

Adelaide, Australia, enjoys 511 mm of annual precipitation, with dry summers and wet winters.

Kuala Lumpur, Malaysia, receives 2529 mm of annual rainfall, characteristic of its equatorial tropical rainforest climate, with consistent rainfall throughout the year and peak months during March and November.

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.

Interesting weather facts

• 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 Santa Rosa’s weather, including sunshine hours, humidity levels, and temperature data, visit our Santa Rosa Climate page.