Climate and monthly weather forecast
Wellfleet, MA

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The climate of Wellfleet

Wellfleet is a town located in Massachusetts, USA. According to the Köppen climate categorization, this town follows a Cfa climate; also recognized as a Humid subtropical climate that undergoes no dry season. This climatic condition implies that Wellfleet experiences significant rainfall throughout the year, even in its driest months.

In terms of temperature, the town displays a considerable variance throughout the year. Monthly high temperatures range from 38.7°F (3.7°C) in January to a peak of 71.1°F (21.7°C) in August. On the other hand, monthly low temperatures show a similar pattern with the coldest month being January, at 31.6°F (-0.2°C); while the warmest months, July and August, registering an average of 66.9°F (19.4°C) and 67.6°F (19.8°C) respectively.

Examining the precipitation, Wellfleet receives a good amount of rainfall consistently, with monthly averages varying from 1.18" (30mm) to 2.17" (55mm). The town also experiences a small quantity of snowfall primarily in the winter months from December to February, with the maximum snowfall of 0.94" (24mm) in February.

Observing the sunlight, Wellfleet receives a sufficient amount of sunshine on an annual basis, with the duration of daylight fluctuating from 9.5 hours in January to 15.2 hours in June. Residents and visitors can expect about 4.2 to 10.6 hours of sunshine every day, depending on the month.

The best time to visit Wellfleet

The ideal time to visit Wellfleet would arguably be between May and September. During these months, the town experiences the highest average temperatures from 54.3°F (12.4°C) to 71.1°F (21.7°C), ideal for outdoor activities. The summertime, particularly June to August, offers the longest daylight hours, ranging from 14.9 hours to 15.2 hours, thereby providing sufficient time for sightseeing and exploration. However, note that this period also records the highest levels of humidity, between 84% to 85%.

The worst time to visit Wellfleet

The least desirable times to visit Wellfleet could be the colder months from November to March. The temperatures during this period drop to averages between 38.7°F (3.7°C) and 50.9°F (10.5°C). Although snowfall is moderate within these months, it may still deter outdoor touristic activities. The daylight during this period is also shorter in comparison to other months, with durations between 9.2 hours to 11.1 hours.

Spring weather in Wellfleet

The spring season in Wellfleet, from March to May, experiences an increase in average temperatures from a low of 35.2°F (1.8°C) in March to highs of 54.3°F (12.4°C) in May. Rainfall is consistent during these months, but relative humidity tends to rise, reaching 84% in May. As spring progresses, the town also benefits from increased daylight hours, moving from 12 hours in March to 14.6 hours in May.

Summer weather in Wellfleet

Summers in Wellfleet, stretching from June to August, are pleasantly warm with the highest average temperatures ranging between 62.4°F (16.9°C) and 71.1°F (21.7°C). Rainfall during these months varies slightly, with June recording the lowest average precipitation of 1.38" (35mm) compared to July's 1.57" (40mm).

Autumn weather in Wellfleet

Autumn, taking place from September to November in Wellfleet, is characterized by a steady drop in temperature from 66.4°F (19.1°C) in September to 43.9°F (6.6°C) in November. The weather remains relatively humid during these months but slightly less compared to the summer periods. October is the rainiest month of the season, experiencing an average of 2.17" (55mm) of rainfall.

Winter weather in Wellfleet

Winter in Wellfleet, occurring from December to February, is the coldest season with average temperatures ranging between 31.6°F (-0.2°C) and 41°F (5°C). Relative humidity decreases slightly compared to other seasons. Although snowfall is limited, the town records the majority of its snowfall during these months. Daylight during winter is significantly shorter, fluctuating from 9.2 to 10.6 hours.

Weather in January

Starting off the year, January in Wellfleet, Massachusetts features low temperatures and high humidity, setting a chilly stage for local inhabitants. High levels of cloud cover contribute to the cold sensation, making it one of the gloomiest months. Weather in January »

Weather in February

February ushers in a slight increase in temperature compared to January, yet does not bring substantial changes in weather. Visitors and locals may find this month slightly warmer yet frozen outdoor surroundings remain, depicting a picturesque winter scene in Wellfleet. Weather in February »

Weather in March

March is known for clearer skies and warmer temperatures, shedding off the frigid demeanor of the past winter months. During this spring precursor, daylight extends to 12 hours, hinting at the return of pleasant outdoor activities. Weather in March »

Weather in April

April defines the essence of spring in Wellfleet, embodying warmer temperatures and longer days compared to March. Sea temperatures begin to escalate, though few dare to brave the 43.5°F (6.4°C) waters. Coupled with prolonged hours of daylight, this month encourages more outdoor pursuits, heralding the start of the spring season. Weather in April »

Weather in May

May presents a remarkable leap from the cool weather of April to the pleasant warmth typical of spring. The weather conditions are ideal for exploring the outdoors with low pressure and impressive visibility of 6 miles throughout the month. Weather in May »

Weather in June

June brings forth the anticipated summer to Wellfleet, synonymous with warmer temperatures and longer daylight hours. Sea temperatures rise to a comfortable 57.7°F (14.3°C), encouraging beach activities and seaside exploration. Lighter winds, lesser cloud cover and the highest sunshine duration of about 15.2 hours summarize the June weather pattern. Weather in June »

Weather in July

July claims the title for the warmest month in Wellfleet, marking the height of summer. This month reaps the benefits of extended sunshine and the highest daylight hours of 14.9, favoring various outdoor activities. With its top temperatures averaging an enticing 70.3°F (21.3°C), July becomes the perfect time for sunbathing and water activities in the warmed sea. Weather in July »

Weather in August

As the last mere weeks of summer approach, August in Wellfleet remains blissfully warm, mimicking the prime conditions of July. Notably, sea temperature reaches the year's high of 67.5°F (19.7°C) in August, granting perfect conditions for a wide spectrum of water sports. Weather in August »

Weather in September

September introduces the early autumn season to Wellfleet, marking a departure from the summer heat. Cooler nights return along with an increase in rain incidents, signifying the start of the transition phase. However, enjoyable late summer weather persists with sea temperatures still at a pleasant 64.3°F (17.9°C), allowing water activities to continue. Weather in September »

Weather in October

October unravels the full essence of autumn in Wellfleet, featuring cooler temperatures and colorful foliage. With the sea temperatures cooling to 58.7°F (14.8°C), the flow of beach goers starts to diminish. Despite the drop in temperature, clear sunny days provide a beautiful backdrop for viewing the changing leaves. Weather in October »

Weather in November

November unveils a drastic change in weather with shorter daylight hours, increased rainfall, and colder temperatures. Commencing the winter season, snow makes a reappearance in November, contributing to a notable 0.08" (2mm) in snowfall. Weather in November »

Weather in December

By December, Wellfleet fully welcomes the winter season, characterized by consistently low temperatures and increased snowfall activity. The sea temperatures further drop to 46.1°F (7.8°C) and the daylight hours are minimized to 9.2, marking the shortest days of the year. Weather in December »
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Frequently asked questions

What is the coldest month in Wellfleet?

In Wellfleet, January is the month with the lowest recorded average temperatures, measuring a high of 38.7°F (3.7°C) and a low of 31.6°F (-0.2°C).

How much does it rain in Wellfleet?

Throughout the year, in Wellfleet, Massachusetts, there are 136.1 rainfall days, and 17.24" (438mm) of precipitation is accumulated.

When does it snow in Wellfleet?

Months with snowfall in Wellfleet, Massachusetts, are January through April, November and December.

How much does it snow in Wellfleet?

Throughout the year, in Wellfleet, Massachusetts, there are 22.1 snowfall days, and 2.95" (75mm) of snow is accumulated.

When is the lowest UV index in Wellfleet?

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

What is the driest month in Wellfleet?

The months with the least rainfall in Wellfleet are February and November Rain falls for 7.3 days and accumulates 1.18" (30mm) of rain.

What is the snowiest month in Wellfleet?

February is the month with the most snowfall. Snow falls for 5.2 days and accumulates 0.94" (24mm) of snow.

What is the month with the coldest ocean in Wellfleet?

March is the month with the coldest seawater in Wellfleet, with an average ocean temperature of 39°F (3.9°C).

When is Daylight Saving Time (DST) in Wellfleet?

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 in Wellfleet?

May through October are months without snowfall in Wellfleet, Massachusetts.

When are the longest days in Wellfleet?

June has the longest days of the year in Wellfleet, Massachusetts, with an average of 15h and 12min of daylight.

What is the most humid month in Wellfleet?

With an average relative humidity of 85%, July is the most humid month in Wellfleet.

When is the highest UV index in Wellfleet?

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

What month is the hottest in Wellfleet?

August, recording an average high temperature of 71.1°F (21.7°C) and a low temperature of 67.6°F (19.8°C), is Wellfleet's warmest month.

When is the ocean warmest in Wellfleet?

With an average ocean temperature of 67.5°F (19.7°C), August is the month with the warmest seawater.

What month has the most sunshine in Wellfleet?

With an average of 10.6h of sunshine, August has the most sunshine of the year.

What is the rainiest month in Wellfleet?

The month with the most rainfall is October, when the rain falls for 12.5 days and typically aggregates up to 2.17" (55mm) of precipitation.

What is the least humid month in Wellfleet?

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

What is the month with the shortest days in Wellfleet?

With an average of 9h and 12min of daylight, December has the shortest days of the year in Wellfleet.

What is the month with the least sunshine in Wellfleet?

With an average of 4.2h of sunshine, December has the least sunshine of the year.

Average temperature
Wellfleet, MA

Average temperature - Wellfleet, MA

The warmest month (with the highest average high temperature) is August (71.1°F).
The month with the lowest average high temperature is January (38.7°F).

The month with the highest average low temperature is August (67.6°F).
The coldest months (with the lowest average low temperature) are January and February (31.6°F).

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Average pressure
Wellfleet, MA

Average pressure - Wellfleet, MA

The month with the highest atmospheric pressure is November (30.06"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

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Average wind speed
Wellfleet, MA

Average wind speed - Wellfleet, MA

The windiest month (with the highest average wind speed) is January (18.5mph).
The calmest months (with the lowest average wind speed) are July and August (11.6mph).

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Average rainfall
Wellfleet, MA

Average rainfall - Wellfleet, MA

The wettest month (with the highest rainfall) is October (2.17").
The driest months (with the least rainfall) are February and November (1.18").

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Average rainfall days
Wellfleet, MA

Average rainfall days - Wellfleet, MA

The month with the highest number of rainy days is May (14.3 days).
The month with the least rainy days is February (7.3 days).

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Average snowfall
Wellfleet, MA

Average snowfall - Wellfleet, MA

The month with the highest snowfall is February (0.94").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days
Wellfleet, MA

Average snowfall days - Wellfleet, MA

The month with the highest number of snowfall days is January (6.1 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

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Average sea temperature
Wellfleet, MA

Average sea temperature - Wellfleet, MA

The best month for swimming (with the highest average sea temperature) is August (67.5°F).
The coldest month (with the lowest average sea temperature) is March (39°F).

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Average daylight / Average sunshine
Wellfleet, MA

Average daylight / Average sunshine - Wellfleet, MA

The month with the longest days is June (Average daylight: 15h and 12min).
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 36min).
The month with the least sunshine is December (Average sunshine: 4h and 12min).

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Average sunshine days
Wellfleet, MA

Average sunshine days - Wellfleet, MA

The month with the most sunshine days is August (18.2 days).
The month with the least sunshine days is December (13.1 days).

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Average UV index
Wellfleet, MA

Average UV index - Wellfleet, 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).

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Average visibility
Wellfleet, MA

Average visibility - Wellfleet, 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).

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Wellfleet, Massachusetts, USA

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