Slidell (LA) Rainfall & Precipitation: Monthly Averages and Year-Round Insights

This page shows the average amount of rainfall per month in Slidell (LA). The numbers are calculated over a 30-year period to provide a reliable average. Now, let’s explore all the details to give you a full picture.

Slidell has a notably wet climate with abundant precipitation, recording 1498 mm of rainfall per year.

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, August receives substantial rainfall, averaging 197 mm of precipitation, recorded across 17 rainy days.

In contrast, the drier season, November brings less rainfall, with 69 mm over 7 rainy days.

August, the city’s wettest month, has a maximum daytime temperature of 33°C. During the driest month November you can expect a temperature of 21°C. For more detailed insights into the city’s temperatures, visit our Slidell Temperature page.

Annual Precipitation in the United States of America

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

Amsterdam Precipitation Compared World Wide

Slidell’s average annual precipitation is 1498 mm. Let’s compare this to some popular worldwide tourist destinations:

The city of Rome, Italy, has an average annual precipitation of 832 mm, spread fairly evenly throughout the year.

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

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

Mumbai, India, experiences a tropical monsoon climate with 1860 mm of annual rainfall, with the majority of precipitation happening during the monsoon season from June to September.

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.

Sea vs. Land Precipitation

The proximity of a location to a large body of water can significantly affect its rainfall patterns:

• Ocean Influence: Coastal regions typically receive more rainfall due to the presence of moisture-laden winds from the ocean. These regions tend to have more humid climates and experience more frequent precipitation, especially in winter.
• Continental Climates: Areas further from the sea, such as inland or continental regions, experience less frequent rainfall and more extreme seasonal variations in precipitation.

For more detailed information about Slidell (LA)’s weather, including sunshine hours, humidity levels, and temperature data, visit our Slidell (LA) Climate page.