The highest day temperature in January 2025 was 47°F. The lowest night temperature was 15°F. The average values for day and night temperatures during January were 33.4°F и 27.5°F respectivly.

The average sea surface temperature in January 2025 for Martha's Vineyard was 39.1°F. The maximum and minimum values were 35.8°F and 44.2°F respectively.

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

Precipitation total in January for Martha's Vineyard is 1.5 in. It makes january the most rainy month of the year.

The average wind speed in January is 14.5 mph. It makes January the most windy month of the year for Martha's Vineyard.

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 Martha's Vineyard in January is 4.7 hours.