Westwego (LA) Monthly Rainfall & Precipitation

This page shows both the average monthly rainfall and the number of rainy days in Westwego, Louisiana, United States of America. The figures are based on a 30-year period (1990–2020) to provide a reliable average. Let's explore the details to provide you with a complete overview.

Westwego has a relatively rainy climate with high precipitation levels, averaging 1764 mm (69 in) of rainfall annually. Despite the high annual total, it does experience a distinct rainy 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 climate in Westwego shows significant variation throughout the year. Expect 228 mm (9 in) of precipitation during the wettest month July, distributed over 22 rainy days.

In contrast, November offers drier and sunnier days, with around 72 mm (2.8 in) of rainfall over 7 rainy days.

July, the wettest month, has a maximum daytime temperature of 33°C (91°F). The city receives 257 hours of sunshine in this period. During the driest month November you can expect a temperature of 22°C (72°F). For more detailed insights into the city's temperatures, visit our Westwego Temperature page.

Westwego's average annual precipitation is 1764 mm (69 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.

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

Perth, Australia, receives 565 mm (22 in) of rainfall annually, mostly during the winter months.

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.

Precipitation has a very strong role in determining the local climate and ecosystem:

• 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 Westwego (LA)'s weather, including sunshine hours, humidity levels, and temperature data, visit our Westwego (LA) Climate page.