Climate and monthly weather forecastEdgartown, MA

Climate and monthly weather forecast
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 »Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
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 in January:
30"Hg - Average pressure in February:
29.99"Hg - Average pressure in March:
30.02"Hg - Average pressure in April:
29.98"Hg - Average pressure in May:
30.02"Hg - Average pressure in June:
29.94"Hg
- Average pressure in July:
29.96"Hg - Average pressure in August:
29.98"Hg - Average pressure in September:
30.05"Hg - Average pressure in October:
30.01"Hg - Average pressure in November:
30.06"Hg - Average pressure in December:
30.03"Hg
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 in January:
16.2mph - Average wind speed in February:
15.7mph - Average wind speed in March:
15.8mph - Average wind speed in April:
14.3mph - Average wind speed in May:
12.5mph - Average wind speed in June:
11.6mph
- Average wind speed in July:
10.9mph - Average wind speed in August:
10.9mph - Average wind speed in September:
12.6mph - Average wind speed in October:
14.5mph - Average wind speed in November:
15.7mph - Average wind speed in December:
15.8mph
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
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 in January:
2.09" - Average rainfall in February:
1.77" - Average rainfall in March:
2.24" - Average rainfall in April:
2.44" - Average rainfall in May:
1.93" - Average rainfall in June:
2.17"
- Average rainfall in July:
1.89" - Average rainfall in August:
1.73" - Average rainfall in September:
1.85" - Average rainfall in October:
3.07" - Average rainfall in November:
1.73" - Average rainfall in December:
2.56"
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 in January:
9 days - Average rainfall days in February:
8.6 days - Average rainfall days in March:
11.9 days - Average rainfall days in April:
14.5 days - Average rainfall days in May:
13.9 days - Average rainfall days in June:
14.2 days
- Average rainfall days in July:
14.4 days - Average rainfall days in August:
13.3 days - Average rainfall days in September:
11.4 days - Average rainfall days in October:
12.9 days - Average rainfall days in November:
10.6 days - Average rainfall days in December:
11.7 days
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
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 in January:
5.3 days - Average snowfall days in February:
3.8 days - Average snowfall days in March:
3.8 days - Average snowfall days in April:
0.3 days - Average snowfall days in May:
0 days - Average snowfall days in June:
0 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0 days - Average snowfall days in October:
0 days - Average snowfall days in November:
0.5 days - Average snowfall days in December:
4.6 days
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
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 in January:
9h and 36min - Average daylight in February:
10h and 36min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 24min - Average daylight in May:
14h and 30min - Average daylight in June:
15h and 6min
- Average daylight in July:
14h and 48min - Average daylight in August:
13h and 48min - Average daylight in September:
12h and 30min - Average daylight in October:
11h and 6min - Average daylight in November:
9h and 54min - Average daylight in December:
9h and 12min
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).
- Average sunshine in January:
5h and 0min - Average sunshine in February:
4h and 42min - Average sunshine in March:
6h and 6min - Average sunshine in April:
8h and 24min - Average sunshine in May:
8h and 36min - Average sunshine in June:
9h and 36min
- Average sunshine in July:
10h and 30min - Average sunshine in August:
10h and 42min - Average sunshine in September:
8h and 42min - Average sunshine in October:
6h and 36min - Average sunshine in November:
5h and 12min - Average sunshine in December:
4h and 48min
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 in January:
15.1 days - Average sunshine days in February:
14.9 days - Average sunshine days in March:
15 days - Average sunshine days in April:
13.5 days - Average sunshine days in May:
15.2 days - Average sunshine days in June:
14.4 days
- Average sunshine days in July:
14.7 days - Average sunshine days in August:
15.9 days - Average sunshine days in September:
16.2 days - Average sunshine days in October:
15.8 days - Average sunshine days in November:
16.7 days - Average sunshine days in December:
15.5 days
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
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
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
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).





