The highest day temperature in January 2025 was 76°F. The lowest night temperature was 42°F. The average values for day and night temperatures during January were 63.7°F и 55.4°F respectivly.

The average sea surface temperature in January 2025 for Siesta Key was 62.8°F. The maximum and minimum values were 56.0°F and 70.6°F respectively.

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

Precipitation total in January for Siesta Key is 0.3 in. It makes january the least rainy month of the year.

The average wind speed in January is 10.4 mph. It makes January one of the most windy months of the year for Siesta Key.

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 Siesta Key in January is 6.6 hours.