Climate and monthly weather forecast
Harwich Port, MA

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Weather in January

January, like December, in Harwich Port, Massachusetts, is another cold winter month, with temperature in the range of an average low of 31.6°F (-0.2°C) and an average high of 39°F (3.9°C). January and February represent the coldest period, with an average high-temperature of 39°F (3.9°C). Weather in January »

Weather in February

The last month of the winter, February, is also a wintry month in Harwich Port, Massachusetts, with temperature in the range of an average low of 32°F (0°C) and an average high of 39°F (3.9°C). The months of January and February see the lowest levels of Harwich Port's temperatures, averaging a high of 39°F (3.9°C). Weather in February »

Weather in March

March, the first month of the spring in Harwich Port, is also a wintry month, with temperature in the range of an average low of 35.4°F (1.9°C) and an average high of 41°F (5°C). The transition from February to March sees an average high-temperature of a still cold 41°F (5°C), indicating a minor variance from the prior month. Weather in March »

Weather in April

April in Harwich Port, Massachusetts, is a frosty spring month, with an average temperature fluctuating between 42.4°F (5.8°C) and 46.9°F (8.3°C). The shift from March to April is marked by a slight increase in the average high-temperature, moving from a wintry 41°F (5°C) to a chilly 46.9°F (8.3°C). Weather in April »

Weather in May

The last month of the spring, May, is a cool month in Harwich Port, Massachusetts, with temperature in the range of an average low of 50.5°F (10.3°C) and an average high of 54.3°F (12.4°C). The onset of May brings a minor temperature shift, with the average high-temperature moving from a chilly 46.9°F (8.3°C) in April to a fresh 54.3°F (12.4°C). Weather in May »

Weather in June

The first month of the summer, June, is a comfortable month in Harwich Port, Massachusetts, with an average temperature fluctuating between 63°F (17.2°C) and 58.8°F (14.9°C). A soft shift in the average high-temperature is noticeable in June, transitioning from a cool 54.3°F (12.4°C) in May to a comfortable 63°F (17.2°C). Weather in June »

Weather in July

July in Harwich Port, Massachusetts, is an agreeable summer month, with temperature in the range of an average low of 67.1°F (19.5°C) and an average high of 70.3°F (21.3°C). The embrace of July brings a minor uplift in the average high-temperature, shifting from an enjoyable 63°F (17.2°C) in June to an agreeable 70.3°F (21.3°C). Weather in July »

Weather in August

The last month of the summer, August, is another pleasant month in Harwich Port, Massachusetts, with an average temperature varying between 68.2°F (20.1°C) and 71.6°F (22°C). In Harwich Port, August is identified by the highest average temperatures, reaching a peak of 71.6°F (22°C) and a low of 68.2°F (20.1°C). Weather in August »

Weather in September

September, the first month of the autumn in Harwich Port, is still a comfortable month, with temperature in the range of an average low of 63.3°F (17.4°C) and an average high of 66.6°F (19.2°C). On the advent of September, Harwich Port's average high-temperature exhibits a minor adjustment to a comfortable 66.6°F (19.2°C) from August's 71.6°F (22°C). Weather in September »

Weather in October

October, like September, is another refreshing autumn month in Harwich Port, Massachusetts, with an average temperature varying between 54.9°F (12.7°C) and 59.5°F (15.3°C). The beginning of October brings a minor change in the average high-temperature, shifting from a comfortable 66.6°F (19.2°C) in September to a still refreshing 59.5°F (15.3°C). Weather in October »

Weather in November

The last month of the autumn, November, is another cool month in Harwich Port, Massachusetts, with an average temperature varying between 51.3°F (10.7°C) and 45.5°F (7.5°C). The start of November involves a subtle temperature drop, shifting from a mild 59.5°F (15.3°C) in October to a cool 51.3°F (10.7°C). Weather in November »

Weather in December

December, the first month of the winter in Harwich Port, is still a chilly month, with an average temperature fluctuating between 37.6°F (3.1°C) and 44.4°F (6.9°C). December's onset introduces a mild reduction in the average high-temperature, from a cool 51.3°F (10.7°C) in November to a frosty 44.4°F (6.9°C). Weather in December »
Updated: Aug 20, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the coldest time of year?

Harwich Port sees its lowest temperatures during January and February, with an average high-temperature of 39°F (3.9°C).

How many days does it rain?

In Harwich Port, during the entire year, the rain falls for 142.4 days and collects up to 22.09" (561mm) of precipitation.

When does it snow?

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

How much does it snow?

Throughout the year, there are 20.8 snowfall days, and 4.37" (111mm) of snow is accumulated.

When is the lowest UV index in Harwich Port?

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

What is the snowiest month?

The month with the most snowfall is February, when snow falls for 5 days and typically aggregates up to 1.38" (35mm) of snow.

What is the month with the coldest ocean?

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

When is Daylight Saving Time (DST) in Harwich Port?

On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Harwich Port, 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?

May through October are months without snowfall.

What are the most humid months?

The months with the highest humidity are June and July, with an average relative humidity of 85%.

When are the longest days?

The month with the longest days is June, with an average of 15h and 12min of daylight.

What is the month with the highest UV index?

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

What time of the year is the hottest?

With average temperatures fluctuating between a high of 71.6°F (22°C) and a low of 68.2°F (20.1°C), August stands out as the warmest month.

When is the ocean warmest?

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

What month has the most sunshine?

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

What is the rainiest month?

October is the month with the most rainfall. Rain falls for 13.4 days and accumulates 2.83" (72mm) of precipitation.

What is the least humid month?

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

What is the driest month?

The month with the least rainfall is November, when the rain falls for 11.5 days and typically collects 1.46" (37mm) of precipitation.

What is the month with the shortest days?

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

What is the month with the least sunshine?

December has the least sunshine of the year, with an average of 4.3h of sunshine.

Average temperature
Harwich Port, MA

Average temperature - Harwich Port, MA

The warmest month (with the highest average high temperature) is August (71.6°F).
The months with the lowest average high temperature are January and February (39°F).

The month with the highest average low temperature is August (68.2°F).
The coldest month (with the lowest average low temperature) is January (31.6°F).

Average pressure
Harwich Port, MA

Average pressure - Harwich Port, 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).

Average wind speed
Harwich Port, MA

Average wind speed - Harwich Port, MA

The windiest month (with the highest average wind speed) is January (18mph).
The calmest month (with the lowest average wind speed) is August (11.4mph).

Average humidity
Harwich Port, MA

Average humidity - Harwich Port, MA

The months with the highest relative humidity are June and July (85%).
The month with the lowest relative humidity is November (74%).

Average rainfall
Harwich Port, MA

Average rainfall - Harwich Port, MA

The wettest month (with the highest rainfall) is October (2.83").
The driest month (with the least rainfall) is November (1.46").

Average rainfall days
Harwich Port, MA

Average rainfall days - Harwich Port, MA

The month with the highest number of rainy days is May (14.6 days).
The month with the least rainy days is February (8.3 days).

Average snowfall
Harwich Port, MA

Average snowfall - Harwich Port, MA

The month with the highest snowfall is February (1.38").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days
Harwich Port, MA

Average snowfall days - Harwich Port, MA

The month with the highest number of snowfall days is January (6 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

Average sea temperature
Harwich Port, MA

Average sea temperature - Harwich Port, 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).

Average daylight / Average sunshine
Harwich Port, MA

Average daylight / Average sunshine - Harwich Port, 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 42min).
The month with the least sunshine is December (Average sunshine: 4h and 18min).

Average sunshine days
Harwich Port, MA

Average sunshine days - Harwich Port, MA

The month with the most sunshine days is August (17.6 days).
The month with the least sunshine days is January (13 days).

Average UV index
Harwich Port, MA

Average UV index - Harwich Port, 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 visibility
Harwich Port, MA

Average visibility - Harwich Port, 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).

Harwich Port, Massachusetts, USA

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