Westwego (LA) Temperature by Month

The average annual maximum temperature in Westwego, Louisiana, United States of America is 26°C (79°F), with daytime highs ranging from 17°C (63°F) in January to 33°C (91°F) in August. This page covers monthly averages, day-night differences, and how Westwego compares to cities worldwide.

The weather in Westwego experiences significant differences between warm and cold seasons, with big shifts in temperature. At night, minimum temperatures range from 25°C (77°F) in August to 7°C (45°F) in January.

The chart below illustrates the average maximum day and minimum night temperatures in Westwego by month:

The minimum temperature is often recorded between 4 AM and 6 AM, while the highest temperature is usually reached at 3 PM, when the sun's heating effect is strongest. August, the warmest month, gets 251 hours of sunshine.

The chart below shows the average temperature throughout the year:

Westwego's average annual maximum temperature is 26°C (79°F). To put that in context, here's how it compares to a few well-known destinations:

Rome, Italy averages 20°C (68°F) annually, with reliably warm summers and comfortable winters.

Glasgow, Scotland averages 13°C (55°F) a year, mild but often grey, with cold winters and rarely hot summers.

Seoul, South Korea averages 18°C (64°F) a year, with four clear seasons, cold winters, and hot humid summers.

Melbourne, Australia averages 20°C (68°F) annually, known for unpredictable weather, with four seasons sometimes happening in one day.

Temperature alone doesn't tell the whole story, humidity plays a big role in how warm or cold it actually feels. High humidity in summer makes the heat feel more intense, particularly once temperatures climb above 25°C. In winter, the same humidity can make cold air feel sharper than the thermometer suggests.

In Westwego, January is the coolest month, with average highs of 17°C (63°F) and humidity around 75%, considered high. In August, the warmest month, temperatures average 33°C (91°F) with 79% humidity, conditions that feel high. For a full picture, see our humidity page.

Climate temperature data is typically calculated as a 30-year average. This smooths out year-to-year variability and gives a more reliable picture of what a place is actually like, rather than what happened in any single unusual year.

The readings come from a range of sources, land-based weather stations, ocean buoys, ships, and satellites. That data is collected by weather services around the world, then pooled, quality-checked, and averaged to produce the climate records you see here.

For cities and regions with significant elevation, altitude is one of the biggest factors shaping local temperatures. As a rule of thumb, temperatures fall by around 6°C for every 1,000 metres gained, so a city at 2,000 metres will typically be around 12°C cooler than a city at sea level in the same region. Higher ground also tends to see more dramatic day-to-night temperature swings, since thinner air loses heat faster after sunset.

For more on Westwego's weather, including monthly rainfall, sunshine hours, and humidity, visit our Westwego climate page.