The highest day temperature in January 2025 was 75°F. The lowest night temperature was 42°F. The average values for day and night temperatures during January were 63.5°F и 49.2°F respectivly.

The average sea surface temperature in January 2025 for Chula Vista was 56.5°F. The maximum and minimum values were 55.6°F and 57.4°F respectively.

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

Precipitation total in January for Chula Vista is 0.8 in. It makes january one of the most rainy months of the year.

The average wind speed in January is 5.1 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 Chula Vista in January is 7.4 hours.