The highest day temperature in December 2025 was 73°F. The lowest night temperature was 60°F. The average values for day and night temperatures during December were 69.8°F и 61.8°F respectivly.

The average sea surface temperature in December 2025 for Antofagasta was 70.9°F. The maximum and minimum values were 67.4°F and 74.2°F respectively.

Almost all days in December are sunny. There is very low probability of clouds or gloomy days.

Precipitation total in December for Antofagasta is 0.0 in. This value is relatively stable throughout the year.

The average wind speed in December is 7.8 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 Antofagasta in December is 12.5 hours.