Santa Ana Monthly Rainfall & Precipitation
This page shows both the average monthly rainfall and the number of rainy days in Santa Ana, La Libertad Department, El Salvador. This average is based on long-term data collected between 1990 and 2020. Let's now guide you through the details for a complete overview.
Santa Ana has a relatively rainy climate with high precipitation levels, averaging 1248 mm (49 in) of rainfall annually. Despite the high annual total, it does experience a distinct dry season during certain months. Examine our detailed charts below to understand these seasonal patterns.
Monthly Precipitation Levels
The average number of days each month with precipitation (> 0.2 mm (0.01 in))
The seasons in Santa Ana, bring significant changes in precipitation. The wettest month, September, receives heavy rainfall, with an average of 267 mm (11 in) of precipitation. This rainfall is distributed across 28 rainy days.
In contrast, the driest month, January, experiences much less rainfall, totaling 3.4 mm (0.1 in) over 5 rainy days. These distinct seasonal differences provide diverse experiences throughout the year.September, the wettest month, has a maximum daytime temperature of 31°C (88°F). The city receives 202 hours of sunshine in this period. During the driest month January you can expect a temperature of 31°C (88°F). For more detailed insights into the city's temperatures, visit our Santa Ana Temperature page.
Daily Historical Precipitation
41-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in June
Explore Santa Ana's Historical Precipitation: 1976-2026
Browse day-by-day precipitation records for Santa Ana spanning 51 years. Select any month and year to see actual rainfall and snowfall recorded on each day.
Annual Rainfall in El Salvador: City Comparison
The map below shows the annual precipitation across El Salvador. You can also select the different months in case you are interested in a specific month.
heavy rainfall
high
moderate
low
almost none
Santa Ana vs World: Rainfall Compared
Santa Ana's average annual precipitation is 1248 mm (49 in). Let's compare this to some popular worldwide tourist destinations:
Boston, USA, experiences 1238 mm (49 in) of annual precipitation, including significant snowfall during the winter.
In Seoul, South Korea, the average annual precipitation is 1237 mm (49 in), with most rain falling during the summer monsoon season.
In Tokyo, Japan, the average annual precipitation is 1528 mm (60 in), with significant summer rains due to typhoon season.
Mumbai, India, experiences a tropical monsoon climate with 1860 mm (73 in) of annual rainfall, with the majority of precipitation happening during the monsoon season from June to September.
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 Santa Ana's weather, including sunshine hours, humidity levels, and temperature data, visit our Santa Ana Climate page.
