Weather in Marthas Vineyard

Find out what weather awaits you in the town of Martha's Vineyard.

This section collects current weather reports, forecasts, and convenient charts for planning your visit.

The climate in Martha's Vineyard, USA, can be characterized as temperate, with four clearly defined seasons. Visitors can expect a noticeable change in weather conditions throughout the year, making this island attractive at different times for various types of leisure.

Summer, especially in July and August, is warm and sunny here, with average temperatures reaching a comfortable 22°C. This is the ideal time for beach holidays, water sports, and nature walks. Winters, on the contrary, are quite cool, with average temperatures in January and February around 2°C, and minimum values sometimes dropping below freezing. Spring and autumn are transitional periods with mild, gradually changing weather, offering pleasant conditions for exploring the island without the summer heat or winter cold.

As for precipitation, it is distributed relatively evenly throughout the year in Martha's Vineyard, without a pronounced rainy season. A small amount of precipitation falls monthly, averaging 3-4 mm. The number of rainy days ranges from 9 to 12 per month, which suggests that rains are generally not prolonged, allowing you to plan activities while taking into account the possible variability of the weather.

The climate in Martha's Vineyard is characterized by noticeable seasonal temperature fluctuations. The coldest months are January, with an average temperature of about 2.1°C (the minimum temperature drops to -0.2°C, and the maximum reaches 4.5°C), and February, where the average temperature is approximately 2.4°C (minimum 0.1°C, maximum 4.7°C). The warmest weather settles in July and August. In July, the average air temperature reaches 22.0°C, with fluctuations from 20.9°C at night to 23.2°C during the day. August is the hottest month, with an average temperature of 22.2°C, while daily highs can reach 23.3°C, and nightly lows hover around 21.0°C.

The summer months in Martha's Vineyard, from June to August, offer pleasantly warm weather. In June, the average temperature is 17.7°C, gradually rising towards July and August, when it consistently stays above 20°C. Day and night temperatures in summer do not have sharp drops; the difference between the maximum and minimum temperature is usually only 2-3°C. This creates comfortable conditions for both daytime activities and evening walks. For example, in August, the temperature ranges from 21.0°C to 23.3°C.

Winter, covering the period from December to February, brings cool, and at times cold, weather. Average temperatures in December are around 4.8°C, dropping to 2.1°C in January, and rising slightly to 2.4°C in February. At night, the temperature can drop to freezing or slightly below, especially in January. Daily highs in winter usually do not exceed 4-7°C. The transitional seasons, spring and autumn, are characterized by a gradual change in temperatures: spring sees a smooth warming from 4.3°C in March to 12.4°C in May, while autumn sees a gradual cooling from 19.3°C in September to 9.5°C in November. The difference between day and night temperatures in winter and the off-season is somewhat larger than in summer, amounting to about 3-5°C.

In Martha's Vineyard, precipitation is distributed quite evenly throughout the year, and there is no pronounced rainy season or drought period. The total amount of precipitation is surprisingly small, averaging just 3-4 mm per month throughout the year. This indicates that precipitation, when it occurs, is usually very light.

Months with the highest amount of precipitation (4 mm) include January, February, March, April, September, October, and December. Slightly less, 3 mm each, falls in May, June, July, August, and November. Considering the temperature regime, in the winter months, especially in January (average temperature 2.1°C, minimum -0.2°C) and February (average temperature 2.4°C, minimum 0.1°C), as well as in December, precipitation may fall as snow or mixed precipitation (rain with snow). During the rest of the year, from spring to autumn, it will be predominantly rain.

The frequency of days with precipitation in Martha's Vineyard is also relatively stable throughout the year. The highest number of such days falls in February and December (an average of 12 days each), while July, August, and November are periods with the lowest frequency of precipitation, counting about 9 "wet" days each. In other months, approximately 10-11 days with precipitation are expected. Given that the total monthly rainfall is only 3-4 mm, this suggests that it is generally very light – possibly in the form of drizzle or short-term, non-intense rains or snowfalls.

When planning a trip to Martha's Vineyard, it is important to consider the changeable weather characteristic of island territories. Comfortable walking shoes and a light waterproof jacket or umbrella will be useful year-round, as precipitation, although not abundant, happens quite often throughout the year. The principle of layering in clothing is your best friend, allowing you to easily adapt to temperature changes during the day.

In summer (June-August), the weather in Martha's Vineyard is usually warm and pleasant, with an average temperature of around 17-22°C. At this time, you will need light clothing, t-shirts, shorts, swimwear, as well as sunscreen, a hat, and sunglasses. Evenings can be cooler, so bring a light sweater or cardigan. In spring (April-May) and autumn (September-October), the temperature is more moderate, ranging from 8°C to 19°C. In these seasons, layered clothing is especially relevant: t-shirts, long-sleeved shirts, jumpers, and a windbreaker or demi-season jacket.

Winter months (December-March) bring coolness, with average temperatures from 2°C to 4°C, sometimes dropping to freezing or slightly below. For a comfortable stay during this period, be sure to take a warm jacket or coat, a hat, gloves, a scarf, and warm shoes. Do not forget about layers of clothing to feel comfortable both outdoors and indoors. Regardless of the season, it can be windy on the island, so windproof clothing will be very handy.