Saint-Jouan-des-Guérets average September sea temperature

Max: 19.3°C / 65.8°F

Avg: 18.1°C / 64.6°F

Min: 17°C / 63.5°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-Jouan-des-Guérets water temperature chart

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

Average monthly sea temperatures in Saint-Jouan-des-Guérets
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 9.0 8.6 8.7 10.4 12.6 14.8 16.4 17.9 18.1 16.7 14.8 11.9
°F 48.2 47.5 47.7 50.7 54.7 58.6 61.5 64.2 64.6 62.1 58.6 53.4

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-Jouan-des-Guérets
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C 7.2 7.7 7.5 9 11.4 13.1 15 16.8 17 15.4 13.1 10
Max °C 10.8 9.6 9.9 11.9 13.9 16.6 17.9 19.1 19.3 18.1 16.6 13.9
Min °F 46.4 46.6 46.5 49.3 53.5 56.9 60.1 63.1 63.5 60.8 56.9 51.5
Max °F 50 48.5 48.9 52.2 56 60.4 63 65.4 65.8 63.5 60.4 55.4

Saint-Jouan-des-Guérets weather & temperature averages »