Castro-Urdiales average September sea temperature

Max: 22.2°C / 70.5°F

Avg: 20.4°C / 68.7°F

Min: 18.7°C / 67°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 Castro-Urdiales water temperature chart

The bar chart below shows the average monthly sea temperatures at Castro-Urdiales over the year.

Average monthly sea temperatures in Castro-Urdiales
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 12.8 12.5 12.6 13.7 15.8 18.4 20.0 21.1 20.4 18.8 16.5 14.3
°F 55 54.5 54.7 56.7 60.4 65.1 68 70 68.7 65.8 61.7 57.7

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 Castro-Urdiales
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C 12.2 11.8 11.4 12 13.8 15.3 17.3 19.7 18.7 16.5 14.7 12.5
Max °C 13.5 13.2 13.8 15.4 17.9 21.5 22.7 22.6 22.2 21.1 18.4 16.2
Min °F 54.4 53.8 53.5 55 58.4 62 65.3 68.6 67 63.5 59.9 55.9
Max °F 55.7 55.2 55.9 58.4 62.5 68.2 70.7 71.5 70.5 68.1 63.6 59.6

Castro-Urdiales weather & temperature averages »