The highest day temperature in January 2026 was 81°F. The lowest night temperature was 57°F. The average values for day and night temperatures during January were 74.2°F и 64.4°F respectivly.

The average sea surface temperature in January 2026 for Tainan was 76.9°F. The maximum and minimum values were 75.4°F and 78.8°F respectively.

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

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

The average wind speed in January is 10.6 mph. It makes January the most windy month of the year for Tainan.

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 Tainan in January is 7.9 hours.