Climate and monthly weather forecast
Edgartown, MA

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Classy and luxurious houses right on the harbor in Edgartown, Massachusetts, with long piers onto the water
Classy and luxurious houses right on the harbor in Edgartown, Massachusetts, with long piers onto the water

The climate of Edgartown

Edgartown, a town located in Massachusetts, USA, is classified within the Cfa zone of the Köppen climate classification which is known as a humid subtropical zone with no dry season. This indicates that the area experiences substantial rainfall throughout the year, maintaining an overall high level of humidity.

Throughout the year, Edgartown sees a range in temperature from a low of 30.6°F (-0.8°C) in January to a high of 73.9°F (23.3°C) in August, illustrating seasonal variations. Rainfall averages from 1.73" (44mm) in November to the highest in October with 3.07" (78mm), signifying regular precipitation patterns throughout the year. Snowfall occurs primarily during winter months, from December till February, with the highest snowfall of 1.18" (30mm) happening in March.

Moving on to Humidity, Edgartown maintains relatively consistent levels year-round, fluctuating from 74% to 83%. It is noteworthy that January and February retain a balanced humidity of 75%, offering a comfortable environment. Meanwhile, the highest humidity at 83% occurs from May to July.

Regardless of the month, in terms of daylight, this town offers from 9.2 hours as observed in December to up to 15.1 hours in June. Consequently, this yields fluctuations in UV index, primarily in range between 2 and 6. The area also predominantly experiences visibility levels of 6 miles throughout the year, maintaining consistent weather conditions in that regard.

The best time to visit Edgartown

For travelers planning to visit Edgartown, the period from June to September could be identified as the most favorable time. During this period, the town experiences high temperatures ranging from 64.9°F (18.3°C) to 73.9°F (23.3°C), coupled with the lowest cloud percentages, allowing ample sunshine and warm conditions. Aside from this, the UV index during these months maintains a moderate level of 5 to 6, providing sufficient opportunity for outdoor activities and beach visits.

The worst time to visit Edgartown

It would be advisable to avoid planning a visit to Edgartown during the winter months of December to February. The town experiences its lowest temperatures, dropping to 30.6°F (-0.8°C) in January, with snowfall beginning in December and lasting through till February. Besides, the daylight hours decline to their shortest, with barely 9.2 hours available in December, significantly limiting outdoor explorations.

Spring weather in Edgartown

Springtime in Edgartown, stretching from March to May, brings about a considerable rise in temperature from 41.9°F (5.5°C) to 56.5°F (13.6°C). Rainfall during this season ranges from 2.24" (57mm) in March to 1.93" (49mm) in May, indicating relatively consistent precipitation levels. April and May also witness increased daylight hours from 13.4 to 14.5 hours, respectively, providing plenty of daylight for outdoor activities.

Summer weather in Edgartown

The summer season in Edgartown, from June through August, is characterized by warm temperatures, peaking at 73.9°F (23.3°C) in August. The impact of the Atlantic Ocean becomes evident with sea temperatures escalating from 58.8°F (14.9°C) in June to 68.5°F (20.3°C) in August. Consequently, this period is considered ideal for water sports and beach activities. Furthermore, summer is accompanied by the highest daily sunshine duration extending to 10.7 hours.

Autumn weather in Edgartown

Autumn in Edgartown, specifically from September to November, witnesses a gradual decline in temperature, registering from 68.2°F (20.1°C) to 52.3°F (11.3°C). Rainfall levels remain quite consistent, peaking to its highest at 3.07" (78mm) in October. Despite a reduction in daylight hours from 12.5 to 9.9 hours, the sufficient sunshine maintains an enjoyable autumn experience.

Winter weather in Edgartown

Winter in Edgartown, encompassing December through February, is marked by temperature lows falling to 30.6°F (-0.8°C) in January. Notably, this period also experiences snowfall, with December recording 0.67" (17mm). Alongside this, daylight hours decrease to their weakest at 9.2 hours in December, indicating shorter days. Despite this, winter could offer unique experiences, such as winter sports and serene landscapes. Therefore, winter in Edgartown has its distinct charm, offering a different facet of this scenic town.

Weather in January

The year kicks off in Edgartown with temperatures dipping to a low of 30.6°F (-0.8°C) and only as high as 38.7°F (3.7°C), making it a chilly start to the year. The town's landscape is typically white this month as it records snowfall of 0.94" (24mm) over an average of 5.3 days. Weather in January »

Weather in February

February sees a continuation of January's cold weather trends in Edgartown, with averages temperature lows and highs ranging from 30.9°F (-0.6°C) to 39°F (3.9°C). The snowfall increases slightly to 1.14" (29mm) over an average of 3.8 days. Weather in February »

Weather in March

March denotes a transition period in Edgartown's weather and sees a rise in temperatures, with lows and highs between 35.2°F (1.8°C) and 41.9°F (5.5°C). Snowfall persists into March, logging 1.18" (30mm) over approximately 4 days. Weather in March »

Weather in April

With April comes noticeable warming in Edgartown, as lows and highs range from 43.2°F (6.2°C) to 48.7°F (9.3°C). This month is marked by the absence of snow, with rainfall taking the stage at 2.44" (62mm). The lengthening days combined with increased visibility promise more opportunities for outdoor activities. Weather in April »

Weather in May

May in Edgartown marks a distinct transition into the warm season, with temperatures ranging from 51.4°F (10.8°C) to 56.5°F (13.6°C). It's a relatively dry month, with rainfall measuring at 1.93" (49mm). Wind speeds drop noticeably in May, resulting in calmer conditions. Weather in May »

Weather in June

June is a month of delightful weather in Edgartown, sports average temperatures between 60.3°F (15.7°C) and 64.9°F (18.3°C). Rainfall is slightly elevated this month, coming in at 2.17" (55mm). The length of daylight reaches its peak in June, providing ample opportunity to enjoy the outdoors and the town’s many attractions. Weather in June »

Weather in July

July takes center stage as the warmest month in Edgartown with average temperatures ranging from 68.5°F (20.3°C) to 72.9°F (22.7°C). This month can be characterized by light rainfall, measuring about 1.89" (48mm). The winds continue to soothe rather than chill, contributing to a comfortable summer. Weather in July »

Weather in August

August carries on July's warmth in Edgartown, albeit with slightly cooler averages between 69.4°F (20.8°C) and 73.9°F (23.3°C). Rainfall for the month registers at about 1.73" (44mm). Despite the slight dip in temperatures, August is still a quintessential summer month with sun, sea, and outdoor activities in full swing. Weather in August »

Weather in September

In September, Edgartown starts to cool off as autumn sets in, with temperature averages sliding from 63.7°F (17.6°C) to 68.2°F (20.1°C). This month has a rainfall measurement of 1.85" (47mm). As fall approaches, the winds pick up pace, lending a crispness to the air. Weather in September »

Weather in October

Autumn is in full swing in October in Edgartown, marked by a further dip in temperatures between 55°F (12.8°C) and 60.8°F (16°C). It is the wettest month of the year with the highest rainfall, registering at 3.07" (78mm). As the autumn leaves contribute to the scenery, wind speeds increase, adding to the season's crisp and invigorating atmosphere. Weather in October »

Weather in November

November sees Edgartown transition into winter, with a significant drop in temperatures, ranging from 45.1°F (7.3°C) to 52.3°F (11.3°C). Rainfall labels at 1.73" (44mm) in November, bringing a wet end to fall. The length of daylight diminishes significantly, marking the approach of winter. Weather in November »

Weather in December

December is undeniably winter in Edgartown, with temperatures averaging between 36.9°F (2.7°C) and 44.4°F (6.9°C). The month sees the return of snowfall, recording 0.67" (17mm) over nearly 5 days. Chill winds sweep through the town, reminding everyone that it's indeed the coldest time of the year. Weather in December »
Updated: Aug 13, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What time of the year is the coldest?

In Edgartown, January records the average lowest temperatures, peaking at 38.7°F (3.7°C) and reaching a low of 30.6°F (-0.8°C).

How many days does it rain in Edgartown?

In Edgartown, during the entire year, the rain falls for 146.4 days and collects up to 25.47" (647mm) of precipitation.

When does it snow?

Months with snowfall are January through March and December.

How many days does it snow in Edgartown?

Throughout the year, there are 18.3 snowfall days, and 3.94" (100mm) of snow is accumulated.

What are the months with the lowest UV index?

January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index.

What month is the ocean coldest?

With an average ocean temperature of 37.9°F (3.3°C), February is the month with the coldest seawater.

What is the month with the least sunshine in Edgartown?

The month with the least sunshine in Edgartown is February, with an average of 4.7h of sunshine.

What is the snowiest month?

March is the month with the most snowfall. Snow falls for 3.8 days and accumulates 1.18" (30mm) of snow.

When is Daylight Saving Time (DST)?

On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from EST to EDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from EDT to EST.

When it does not snow?

April through November are months without snowfall.

What is the most humid month?

The months with the highest humidity in Edgartown are May through July, with an average relative humidity of 83%.

When are the longest days in Edgartown?

June has the longest days of the year, with an average of 15h and 6min of daylight.

What is the month with the highest UV index?

The months with the highest UV index are July and August, with an average maximum UV index of 6.

What is the warmest month?

With average high temperatures of 73.9°F (23.3°C) and lows of 69.4°F (20.8°C), August is the warmest month.

What is the driest month?

August and November are months with the least rain when the rain falls for 13.3 days and typically aggregates up to 1.73" (44mm) of rain.

When is the ocean warmest?

August is the month with the warmest seawater, with an average ocean temperature of 68.5°F (20.3°C).

What month has the most sunshine?

August has the most sunshine of the year, with an average of 10.7h of sunshine.

What is the wettest month?

October is the month with the most rainfall. Rain falls for 12.9 days and accumulates 3.07" (78mm) of precipitation.

What is the least humid month?

With an average relative humidity of 74%, November is the least humid month.

What is the month with the shortest days?

December has the shortest days of the year, with an average of 9h and 12min of daylight.
Today
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Long-term
YearJFMAMJJASOND

Average temperature
Edgartown, MA

Average temperature - Edgartown, MA

The warmest month (with the highest average high temperature) is August (73.9°F).
The month with the lowest average high temperature is January (38.7°F).

The month with the highest average low temperature is August (69.4°F).
The coldest month (with the lowest average low temperature) is January (30.6°F).

Average pressure
Edgartown, MA

Average pressure - Edgartown, MA

The month with the highest atmospheric pressure is November (30.06"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

Average wind speed
Edgartown, MA

Average wind speed - Edgartown, MA

The windiest month (with the highest average wind speed) is January (16.2mph).
The calmest months (with the lowest average wind speed) are July and August (10.9mph).

Average humidity
Edgartown, MA

Average humidity - Edgartown, MA

The months with the highest relative humidity are May, June and July (83%).
The month with the lowest relative humidity is November (74%).

Average rainfall
Edgartown, MA

Average rainfall - Edgartown, MA

The wettest month (with the highest rainfall) is October (3.07").
The driest months (with the least rainfall) are August and November (1.73").

Average rainfall days
Edgartown, MA

Average rainfall days - Edgartown, MA

The month with the highest number of rainy days is April (14.5 days).
The month with the least rainy days is February (8.6 days).

Average snowfall
Edgartown, MA

Average snowfall - Edgartown, MA

The month with the highest snowfall is March (1.18").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").

Average snowfall days
Edgartown, MA

Average snowfall days - Edgartown, MA

The month with the highest number of snowfall days is January (5.3 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

Average sea temperature
Edgartown, MA

Average sea temperature - Edgartown, MA

The best month for swimming (with the highest average sea temperature) is August (68.5°F).
The coldest month (with the lowest average sea temperature) is February (37.9°F).

Average daylight / Average sunshine
Edgartown, MA

Average daylight / Average sunshine - Edgartown, MA

The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 12min).

The month with the most sunshine is August (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).

Average sunshine days
Edgartown, MA

Average sunshine days - Edgartown, MA

The month with the most sunshine days is November (16.7 days).
The month with the least sunshine days is April (13.5 days).

Average UV index
Edgartown, MA

Average UV index - Edgartown, MA

The months with the highest UV index are July and August (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).

Average cloud cover
Edgartown, MA

Average cloud cover - Edgartown, MA

The month with the most cloud cover is December (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 27).

Average visibility
Edgartown, MA

Average visibility - Edgartown, MA

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

Edgartown, Massachusetts, USA

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