The highest day temperature in August 2026 was 62°F. The lowest night temperature was 43°F. The average values for day and night temperatures during August were 57.3°F и 52.6°F respectivly.

The average sea surface temperature in August 2026 for Cartagena was 57.0°F. The maximum and minimum values were 55.4°F and 57.8°F respectively.

Most of the days in August are sunny but you can also expect cloudy and gloomy days.

Precipitation total in August for Cartagena is 0.8 in. It makes august one of the most rainy months of the year.

The average wind speed in August is 8.3 mph. This value is relatively stable throughout the year.

We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Cartagena in August is 7.5 hours.