The highest day temperature in January 2025 was 73°F. The lowest night temperature was 48°F. The average values for day and night temperatures during January were 64.5°F и 59.0°F respectivly.

The average sea surface temperature in January 2025 for Sanibel Island was 65.2°F. The maximum and minimum values were 59.4°F and 71.4°F respectively.

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

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

The average wind speed in January is 10.1 mph. It makes January one of the most windy months of the year for Sanibel 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 Sanibel Island in January is 6.7 hours.