Climate and monthly weather forecast
Harwich Port, MA

Weather in January

January, like December, in Harwich Port, Massachusetts, is a wintry winter month, with average temperature ranging between min 31.6°F (-0.2°C) and max 39°F (3.9°C). The coldest months are January and February, with an average high-temperature of 39°F (3.9°C). Weather in January »

Weather in February

February, the last month of the winter, in Harwich Port, is another cold month, with average temperature ranging between min 32°F (0°C) and max 39°F (3.9°C). The coldest months are January and February, with an average high-temperature of 39°F (3.9°C). Weather in February »

Weather in March

The first month of the spring, March, is also a wintry month in Harwich Port, Massachusetts, with average temperature varying between 41°F (5°C) and 35.4°F (1.9°C). In March, the average high-temperature is almost the same as in February - a still cold 41°F (5°C). Weather in March »

Weather in April

April is a frosty spring month in Harwich Port, Massachusetts, with average temperature varying between 46.9°F (8.3°C) and 42.4°F (5.8°C). In Harwich Port, the average high-temperature slightly increases, from a cold 41°F (5°C) in March, to a chilly 46.9°F (8.3°C). Weather in April »

Weather in May

May, the last month of the spring, in Harwich Port, is a fresh month, with average temperature fluctuating between 54.3°F (12.4°C) and 50.5°F (10.3°C). In May, the average high-temperature slightly increases, 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 an enjoyable month in Harwich Port, Massachusetts, with average temperature varying between 63°F (17.2°C) and 58.8°F (14.9°C). In June, the average high-temperature slightly increases, from a fresh 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 a pleasant 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). In July, the average high-temperature marginally rises, from an enjoyable 63°F (17.2°C) in June, to a pleasant 70.3°F (21.3°C). Weather in July »

Weather in August

August, the last month of the summer, in Harwich Port, is another pleasant month, with average temperature ranging between min 68.2°F (20.1°C) and max 71.6°F (22°C). August is the warmest month, with an average high-temperature of 71.6°F (22°C) and an average low-temperature of 68.2°F (20.1°C). Weather in August »

Weather in September

September, the first month of the autumn, in Harwich Port, is also an enjoyable month, with average temperature varying between 66.6°F (19.2°C) and 63.3°F (17.4°C). In September, the average high-temperature is almost the same as in August - a comfortable 66.6°F (19.2°C). Weather in September »

Weather in October

October, like September, is another mild autumn month in Harwich Port, Massachusetts, with temperature in the range of an average high of 59.5°F (15.3°C) and an average low of 54.9°F (12.7°C). In October, the average high-temperature marginally drops, from an enjoyable 66.6°F (19.2°C) in September, to a mild 59.5°F (15.3°C). Weather in October »

Weather in November

November, the last month of the autumn, in Harwich Port, is also a fresh month, with average temperature ranging between max 51.3°F (10.7°C) and min 45.5°F (7.5°C). In Harwich Port, Massachusetts, the average high-temperature marginally drops, from a mild 59.5°F (15.3°C) in October, to a fresh 51.3°F (10.7°C). Weather in November »

Weather in December

The first month of the winter, December, is still a chilly month in Harwich Port, Massachusetts, with average temperature ranging between min 37.6°F (3.1°C) and max 44.4°F (6.9°C). In Harwich Port, the average high-temperature marginally drops, from a cool 51.3°F (10.7°C) in November, to a frosty 44.4°F (6.9°C). Weather in December »
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FAQ

What are the coldest months in Harwich Port?

January and February, with an average high-temperature of 39°F (3.9°C), are the coldest months in Harwich Port.

How much does it rain in Harwich Port?

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 in Harwich Port?

January through April, November and December are months with snowfall in Harwich Port, Massachusetts.

How much does it snow in Harwich Port?

Throughout the year, in Harwich Port, 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 in Harwich Port, Massachusetts.

What is the snowiest month in Harwich Port?

February is the month with the most snowfall. Snow falls for 5 days and accumulates 1.38" (35mm) of snow.

What month is the ocean coldest in Harwich Port?

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

When it does not snow in Harwich Port?

May through October are months without snowfall in Harwich Port, Massachusetts.

What are the most humid months in Harwich Port?

June and July, with an average relative humidity of 85%, are most humid months in Harwich Port, Massachusetts.

When are the longest days in Harwich Port?

With an average of 15.2h of daylight, June has the longest days of the year.

What is the month with the highest UV index in Harwich Port?

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

What is the warmest month in Harwich Port?

The warmest month in Harwich Port, Massachusetts, is August, with an average high-temperature of 71.6°F (22°C) and an average low-temperature of 68.2°F (20.1°C).

When is the ocean warmest in Harwich Port?

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

What month has the most sunshine in Harwich Port?

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

What is the rainiest month in Harwich Port?

The month with the most rainfall in Harwich Port, Massachusetts, is October when the rain falls for 13.4 days and typically aggregates up to 2.83" (72mm) of precipitation.

What is the least humid month in Harwich Port?

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

What is the driest month in Harwich Port?

The month with the least rainfall in Harwich Port 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 in Harwich Port?

December has the shortest days of the year in Harwich Port, Massachusetts, with an average of 9.2h of daylight.

What is the month with the least sunshine in Harwich Port?

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

Average temperature
Harwich Port, MA

Average temperature - Harwich Port, MA

The warmest month (with the highest average high temperature) is August (71.6°F).
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).

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Average pressure
Harwich Port, MA

Average pressure - Harwich Port, MA

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

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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).

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Average humidity
Harwich Port, MA

Average humidity - Harwich Port, MA

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

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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").

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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).

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Average snowfall
Harwich Port, MA

Average snowfall - Harwich Port, MA

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

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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).
Months with the least snowfall days are May, June, July, August, September and October (0 days).

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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).

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Average daylight / Average sunshine
Harwich Port, MA

Average daylight / Average sunshine - Harwich Port, MA

The month with the longest days is June (Average daylight: 15.2h).
The month with the shortest days is December (Average daylight: 9.2h).

The month with the most sunshine is August (Average sunshine: 10.7h).
The month with the least sunshine is December (Average sunshine: 4.3h).

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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).

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Average UV index
Harwich Port, MA

Average UV index - Harwich Port, MA

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

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Average visibility
Harwich Port, MA

Average visibility - Harwich Port, MA

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

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