San Juan Cosalá Monthly Rainfall & Precipitation

This page shows both the average monthly rainfall and the number of rainy days in San Juan Cosalá, Jalisco, Mexico. These values are calculated using 30 years of data (1990–2020) to ensure accuracy. Now, let's explore all the details to give you a full picture.

Generally, San Juan Cosalá receives mid-range precipitation levels, with 727 mm (29 in) annually. The distribution varies significantly throughout the year, with a distinct dry season during certain months, as shown in our charts below.

Monthly Precipitation Levels

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

The seasons in San Juan Cosalá, bring significant changes in precipitation. The wettest month, July, receives heavy rainfall, with an average of 171 mm (6.7 in) of precipitation. This rainfall is distributed across 18 rainy days.

In contrast, the driest month, April, experiences much less rainfall, totaling 4.6 mm (0.2 in) over a single rainy day. These distinct seasonal differences provide diverse experiences throughout the year.

July, the wettest month, has a maximum daytime temperature of 28°C (82°F). The city receives 197 hours of sunshine in this period. During the driest month April you can expect a temperature of 32°C (90°F). For more detailed insights into the city's temperatures, visit our San Juan Cosalá Temperature page.

San Juan Cosalá's average annual precipitation is 727 mm (29 in). Let's compare this to some popular worldwide tourist destinations:

Seville, Spain, experiences 541 mm (21 in) of rainfall annually, with wet winters and dry summers typical of southern Spain.

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

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.

Climate change is affecting precipitation patterns worldwide, including San Juan Cosalá:

• Changing Rainfall Patterns: Global warming causes drastic changes in the patterns of rainfall. Some areas have been experiencing increased frequency and intensity of rainfall, while other areas experience longer dry spells or even droughts.
• Local Impacts: Many regions are experiencing heavier rainfall in the winter months and drier, hotter summers. This affects agriculture, water resources, and ecosystems.

• 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 Juan Cosalá's weather, including sunshine hours, humidity levels, and temperature data, visit our San Juan Cosalá Climate page.