The highest day temperature in January 2026 was 52°F. The lowest night temperature was 4°F. The average values for day and night temperatures during January were 33.7°F и 27.2°F respectivly.

The average sea surface temperature in January 2026 for Martha's Vineyard was 38.1°F. The maximum and minimum values were 33.4°F and 41.2°F respectively.

You can expect various weather conditions during January. Be ready for sunny, cloudy or even gloomy days.

Precipitation total in January for Martha's Vineyard is 1.4 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 4.9 hours.