The highest day temperature in January 2025 was 47°F. The lowest night temperature was 17°F. The average values for day and night temperatures during January were 32.0°F и 27.1°F respectivly.

The average sea surface temperature in January 2025 for Dennis Port was 34.8°F. The maximum and minimum values were 31.2°F and 41.0°F respectively.

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

Precipitation total in January for Dennis Port is 1.3 in. It makes january one of the most rainy months of the year.

The average wind speed in January is 14.0 mph. It makes January one of the most windy months of the year for Dennis Port.

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 Dennis Port in January is 4.5 hours.