Climate and monthly weather forecast
Falmouth, MA

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Climate and monthly weather forecast

The climate of Falmouth

Located in the state of Massachusetts, USA, Falmouth is subjected to a humid subtropical climate with no dry season, as categorized under the Köppen climate classification. The geographical positioning of Falmouth offers it a climate that sees variations in several weather parameters throughout the year.

The average high temperature in Falmouth sees an annual swing from 37.9°F (3.3°C) in January to a peak of 73.9°F (23.3°C) in August. There is a corresponding rise and fall in the minimum temperature as well, dipping to 29.8°F (-1.2°C) in January and climbing to 68.5°F (20.3°C) in August. The humidity, relatively balanced throughout the year, fluctuates slightly between a low of 74% in November and a high of 83% in July.

Falmouth witnesses light rainfalls consistently across the year, with the quantities fluctuating from 0.31" (8mm) in July, August, and September, to a maximum of 0.71" (18mm) in October. As per the number of rainy days, it varies from a minimum of 4.6 days in September to a maximum of 7.7 days in July. Snowfall is minimal and restricted to the colder months between January and March, with December recording a little snowfall.

The sea temperature varies from 38.2°F (3.4°C) in February to 68.4°F (20.2°C) in August, which corresponds to the variations in the land temperatures. The amount of daylight that Falmouth receives ranges from a minimum of 9.2 hours in December to a maximum of 15.1 hours in June. The town similarly sees a fluctuation in the sunshine hours from low 4.7 hours in December to high 10.7 hours in August.

The best time to visit Falmouth

The most favorable time to visit Falmouth is during the summer months, from June to August. During this period, the region experiences the highest temperatures, rising to 73.4°F (23°C) to 73.9°F (23.3°C), coupled with the highest sea temperatures, peaking at 68.4°F (20.2°C) in August. Also, these months offer the highest amount of daylight, up to 15.1 hours in June, and the maximum sunshine, up to 10.7 hours in August.

The worst time to visit Falmouth

Visiting Falmouth during the winter months of December to February could be unfavorable for some due to the cold weather conditions. During this time, the region experiences the lowest temperatures, dropping to 29.8°F (-1.2°C) in January, and the lowest sea temperature reaching approximately 38.2°F (3.4°C) in February. Also, these months have the shortest daylight hours, approximately 9.2 hours in December.

Spring weather in Falmouth

The spring in Falmouth, from March to May, witnesses a gradual increase in temperature from 41.5°F (5.3°C) to 57°F (13.9°C). The sea temperature also shows a similar rise, from 38.6°F (3.7°C) to 50.4°F (10.2°C). The rainfall during these months is quite consistent, between 0.39" (10mm) to 0.51" (13mm), with the number of rainy days peaking in April at 6.9 days.

Summer weather in Falmouth

The summer months from June to August in Falmouth are characterized by temperatures ranging from 65.5°F (18.6°C) to 73.9°F (23.3°C). The sea temperature also peaks during this time, reaching a high of 68.4°F (20.2°C) in August. The rainfall is relatively low, ranging from 0.31" (8mm) in July and August to slightly higher 0.47" (12mm) in June.

Autumn weather in Falmouth

In autumn, from September to November, Falmouth experiences a gradual drop in temperature, moving from 68.4°F (20.2°C) to 50.9°F (10.5°C). The sea temperature also follows a decreasing trend, shifting from 65.8°F (18.8°C) to 53.2°F (11.8°C). Rainfall is more prominent in these months, peaking at 0.71" (18mm) in October.

Winter weather in Falmouth

December to February marks the winter period in Falmouth. During these months, the temperature falls significantly, from 43.7°F (6.5°C) in December to 37.9°F (3.3°C) in January. The sea temperature also reduces and reaches the 38.2°F (3.4°C) mark in February. The rainfall is comparatively less during winter, with maximum rain recorded as 0.67" (17mm) in December. During this time, the town also witnesses snowfall with 0.24" (6mm) in December.

Weather in January

The new year in Falmouth, Massachusetts greets inhabitants with chilliness typically found in the heart of winter. The month of January showcases a characteristic sharp decline in temperature and this month is no exception with the lowest temperature recorded at 29.8°F (-1.2°C). Weather in January »

Weather in February

The grip of winter is in full force throughout February in Falmouth, Massachusetts, with the cold winds whipping across the landscapes. A slight upliftment in the temperature can be noticed, reaching 30°F (-1.1°C) at the lowest point. Weather in February »

Weather in March

The arrival of spring in March is signified by increasingly milder weather in Falmouth, Massachusetts. Rising temperatures become evident, hitting an average of 34.7°F (1.5°C) at their lowest. The last vestiges of snow can be seen in the early stages of the month, but not for long. Weather in March »

Weather in April

Facing towards the oncoming spring, April in Falmouth, Massachusetts ushers in pleasanter atmospheric conditions. The temperatures record a noticeable increase, reaching a comfortable 42.6°F (5.9°C) at their lowest. With the snow and chills of winter now a memory, spring graces the town with a significant increase in rainfall. Weather in April »

Weather in May

The embrace of spring in May brings about warm and refreshing temperatures in Falmouth, Massachusetts. The rise in temperature continues, soaring to 51.3°F (10.7°C) at the coldest, indicating a significant leap from the toddler months of the year. Weather in May »

Weather in June

Entering the magnificent summer season, June in Falmouth, Massachusetts offers inviting weather conditions. The month records temperatures shooting up to 60.1°F (15.6°C) at their lowest, paving the way to the first substantial heat of the year. Weather in June »

Weather in July

Standing at the pinnacle of summer, July in Falmouth, Massachusetts presents the warmest conditions of the year. The temperatures touch an annual high, with the hottest day falling in this month at 73.4°F (23°C). Despite the heightened heat, the high relative humidity embraces the town, adding a unique characteristic to the July weather. Weather in July »

Weather in August

Bathing in the remnants of summer heat, August in Falmouth, Massachusetts provides pleasant warm conditions. Temperatures linger at peak summertime warmth, reaching previously unheard details at 68.5°F (20.3°C). Despite the prevailing heat, a subtle reduction in temperature can be noted when compared to July. Weather in August »

Weather in September

With the arrival of autumn in September, Falmouth, Massachusetts begins to feel a drop in temperature. Experiencing a notable cooling trend, the lowest temperature recedes to 62.4°F (16.9°C). The shift in climate transforms the town into a vibrant color palette as the leaves on the trees begin to change. Weather in September »

Weather in October

October in Falmouth, Massachusetts accompanies chillier season of autumn, bringing with it notable weather changes. The drop in temperature becomes more apparent as the month progresses, with the lowest recorded at 54.1°F (12.3°C). Weather in October »

Weather in November

With the winter season drawing nearer, November in Falmouth, Massachusetts witnesses a range of cooler temperatures. The fall in temperature is noticeable, declining to a chilly 44.2°F (6.8°C). The nearing colder weather sees a decrease in daylight and sunshine, signaling the impending arrival of winter. Weather in November »

Weather in December

Welcoming the frosty winter season, December in Falmouth, Massachusetts heralds a plunge in temperature. The scenario concerning temperature changes drastically with the lowest hitting 35.8°F (2.1°C). The colder winter weather leads to a contraction of daylight hours, with the town experiencing fewer hours of sunshine. Weather in December »
Updated: Jun 4, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the coldest time of year?
January, having an average high-temperature of 37.9°F (3.3°C) and an average low-temperature of 29.8°F (-1.2°C), is the coldest month.
How many days does it rain?
In Falmouth, during the entire year, the rain falls for 69.4 days and collects up to 5.31" (135mm) of precipitation.
When does it snow?
January through March and December are months with snowfall.
How many days does it snow?
Throughout the year, there are 12.8 snowfall days, and 0.67" (17mm) of snow is accumulated.
What is the month with the lowest UV index in Falmouth?
The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 2.
What month is the ocean coldest?
February is the month with the coldest seawater, with an average ocean temperature of 38.1°F (3.4°C).
What is the month with the least sunshine?
February and December, with an average of 4.7h of sunshine, are months with the least sunshine in Falmouth.
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?
In Falmouth, snow does not fall in April through November.
When are the longest days?
June has the longest days of the year in Falmouth, with an average of 15h and 6min of daylight.
What is the most humid month in Falmouth?
July is the most humid month, with an average relative humidity of 83%.
What is the driest month?
July through September are months with the least rain when the rain falls for 7.7 days and typically aggregates up to 0.31" (8mm) of rain.
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?
Falmouth notes the warmest temperatures in August, with a average high of 73.9°F (23.3°C) and a low of 68.5°F (20.3°C).
What is the month with the warmest ocean in Falmouth?
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?
With an average of 10.7h of sunshine, August has the most sunshine of the year.
What is the rainiest month?
The month with the most rainfall is October, when the rain falls for 6.2 days and typically aggregates up to 0.71" (18mm) of precipitation.
What is the least humid month?
The least humid month is November, with an average relative humidity of 74%.
When does it snow the most in Falmouth?
The month with the most snowfall is December, when snow falls for 2.5 days and typically aggregates up to 0.24" (6mm) of snow.
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.
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Average temperature - Falmouth, MA
Average temperature
Falmouth, 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 (37.9°F).

The month with the highest average low temperature is August (68.5°F).
The coldest month (with the lowest average low temperature) is January (29.8°F).

Average pressure - Falmouth, MA
Average pressure
Falmouth, 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 - Falmouth, MA
Average wind speed
Falmouth, MA

The windiest month (with the highest average wind speed) is January (15.3mph).
The calmest months (with the lowest average wind speed) are July and August (10.2mph).

Average humidity - Falmouth, MA
Average humidity
Falmouth, MA

The month with the highest relative humidity is July (83%).
The month with the lowest relative humidity is November (74%).

Average rainfall - Falmouth, MA
Average rainfall
Falmouth, MA

The wettest month (with the highest rainfall) is October (0.71").
The driest months (with the least rainfall) are July, August and September (0.31").

Average rainfall days - Falmouth, MA
Average rainfall days
Falmouth, MA

The month with the highest number of rainy days is July (7.7 days).
The month with the least rainy days is September (4.6 days).

Average snowfall - Falmouth, MA
Average snowfall
Falmouth, MA

The month with the highest snowfall is December (0.24").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").

Average snowfall days - Falmouth, MA
Average snowfall days
Falmouth, MA

The month with the highest number of snowfall days is January (4.4 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

Average sea temperature - Falmouth, MA
Average sea temperature
Falmouth, MA

The best month for swimming (with the highest average sea temperature) is August (68.4°F).
The coldest month (with the lowest average sea temperature) is February (38.2°F).

Average daylight / Average sunshine - Falmouth, MA
Average daylight / Average sunshine
Falmouth, 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 months with the least sunshine are February and December (Average sunshine: 4h and 42min).

Average sunshine days - Falmouth, MA
Average sunshine days
Falmouth, MA

The month with the most sunshine days is September (23.9 days).
The month with the least sunshine days is February (20.8 days).

Average UV index - Falmouth, MA
Average UV index
Falmouth, 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 - Falmouth, MA
Average cloud cover
Falmouth, MA

The months with the most cloud cover are February, March and December (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 28).

Average visibility - Falmouth, MA
Average visibility
Falmouth, 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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