The highest day temperature in January 2026 was 71°F. The lowest night temperature was 29°F. The average values for day and night temperatures during January were 57.9°F и 50.8°F respectivly.

The average sea surface temperature in January 2026 for Bay Saint Louis was 59.2°F. The maximum and minimum values were 53.0°F and 67.6°F respectively.

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

Precipitation total in January for Bay Saint Louis is 1.3 in.

The average wind speed in January is 8.8 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 Bay Saint Louis in January is 6.0 hours.