Saint-Louis average September sea temperature

Max: 29.4°C / 84.3°F

Avg: 28.6°C / 83.5°F

Min: 27.8°C / 82.7°F

These figures are calculated from several years of recorded data and are the maximum, minimum and average temperatures of all the recorded years

Average September sea temperatures


Monthly Saint-Louis water temperature chart

The bar chart below shows the average monthly sea temperatures at Saint-Louis over the year.

Average monthly sea temperatures in Saint-Louis
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 21.3 19.4 18.9 19.8 21.7 24.8 26.6 28.1 28.6 28.2 25.5 23.4
°F 70.3 66.9 66 67.6 71.1 76.6 79.9 82.6 83.5 82.8 77.9 74.1

Monthly average max / min water temperatures

The graph below shows the range of monthly water temperatures over several years.

Maximum and minimum monthly sea temperatures in Saint-Louis
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C 18 17.4 17.5 18.1 18.6 22.5 24.5 26.3 27.8 26.9 22.5 21.4
Max °C 24.6 21.4 20.4 21.5 24.8 27.1 28.7 29.9 29.4 29.6 28.6 25.5
Min °F 67 64.9 64.6 65.9 68 74.3 77.8 80.8 82.7 81.5 74.9 72.1
Max °F 73.6 68.9 67.5 69.3 74.2 78.9 82 84.4 84.3 84.2 81 76.2

Saint-Louis weather & temperature averages »