The highest day temperature in January 2026 was 64°F. The lowest night temperature was 53°F. The average values for day and night temperatures during January were 59.5°F и 57.7°F respectivly.

The average sea surface temperature in January 2026 for Terceira Island was 62.0°F. The maximum and minimum values were 60.8°F and 63.4°F respectively.

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

Precipitation total in January for Terceira Island is 2.8 in. It makes january one of the most rainy months of the year.

The average wind speed in January is 16.8 mph. It makes January one of the most windy months of the year for Terceira Island.

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 Terceira Island in January is 4.4 hours.