Sea Temperature

Saint-Jouan-des-Guérets average December sea temperature

Max: 13.8°C / 55.3°F

Avg: 11.9°C / 53.4°F

Min: 10.1°C / 51.6°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 December 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 9.2 8.8 8.8 10.4 12.5 14.7 16.3 17.8 18.0 16.7 14.6 11.9
°F 48.6 47.8 47.8 50.7 54.5 58.5 61.3 64 64.4 62.1 58.3 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 7.5 8 7.5 9 11.2 13.2 15 16.7 16.9 15.4 12.8 10.1
Max °C 11 9.6 10.1 11.9 13.8 16.3 17.6 18.9 19.1 18.1 16.4 13.8
Min °F 46.9 47 46.5 49.3 53.2 57 60 62.9 63.3 60.8 56.5 51.6
Max °F 50.4 48.6 49.1 52.2 55.8 60.1 62.6 65.1 65.5 63.5 60.1 55.3

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