Port-Louis Temperature by Month

The average annual maximum temperature in Port-Louis, Grande-Terre, Guadeloupe is 28°C (82°F), with little variation between seasons. This page covers monthly averages, day-night differences, and how Port-Louis compares to cities worldwide.

The temperature in Port-Louis changes very little across the seasons, maintaining a similar climate throughout the year. Maximum daytime temperatures range from a comfortable 27°C (81°F) in February to a comfortable 30°C (86°F) in September. Nighttime lows range from 26°C (79°F) in September to 24°C (75°F) in February.

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

The coolest part of the day is typically between 4 AM and 6 AM, while 3 PM is usually the warmest, when solar heating is at its peak. September, the city's warmest month, averages 218 hours of sunshine.

The chart below shows the average temperature throughout the year:

Port-Louis's average annual maximum temperature is 28°C (82°F). To put that in context, here's how it compares to a few well-known destinations:

Seville, Spain averages 23°C (73°F) a year, one of the warmer cities in Western Europe, with long hot summers.

Reykjavík, Iceland averages 9°C (48°F) a year, mild summers by Icelandic standards, but cold winters and frequent wind.

Beijing, China averages 20°C (68°F) annually, but with big seasonal swings, very cold winters and hot summers.

Adelaide, Australia averages 21°C (70°F) a year, with warm summers, mild winters, and relatively low rainfall year-round.

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 Port-Louis, February is the coolest month, with average highs of 27°C (81°F) and humidity around 77%, considered high. In September, the warmest month, temperatures average 30°C (86°F) with 82% humidity, conditions that feel very 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.

Seasonal temperature shifts influence more than just how warm it feels, they also drive changes in rainfall, cloud cover, and wind patterns throughout the year.

Warmer air holds more moisture, which tends to mean heavier or more frequent rain during the warmer months. When temperatures drop in winter, any precipitation that does fall is more likely to come as snow or sleet, though in Port-Louis this rarely lasts long on the ground.

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