The highest day temperature in December 2025 was 73°F. The lowest night temperature was 50°F. The average values for day and night temperatures during December were 65.2°F и 55.6°F respectivly.

The average sea surface temperature in December 2025 for Talcahuano was 58.7°F. The maximum and minimum values were 54.0°F and 62.4°F respectively.

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

Precipitation total in December for Talcahuano is 0.1 in. It makes december one of the least rainy months of the year.

The average wind speed in December is 9.9 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 Talcahuano in December is 12.6 hours.