The highest day temperature in January 2026 was 87°F. The lowest night temperature was 46°F. The average values for day and night temperatures during January were 71.7°F и 54.6°F respectivly.

The average sea surface temperature in January 2026 for Irvine was 62.9°F. The maximum and minimum values were 62.0°F and 63.6°F respectively.

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

Precipitation total in January for Irvine is 0.6 in. It makes january one of the most rainy months of the year.

The average wind speed in January is 4.9 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 Irvine in January is 7.5 hours.