Cape Cod weather and climate in 2025
January
February
March
April
May
June
July
August
September
October
November
December
Overview
July
< June
Overview
August >
Cape Cod weather and climate in 2025
January
February
March
April
May
June
July
August
September
October
November
December
Overview
July
< June
Overview
August >
Day
26 °C
Night
17 °C
Sea
18 °C
Precipitation
80 mm
in month
Rainy days
9 days
in month
Daylight
15 hours
average
Sunshine
9 hours
average
Humidity
73 %
Day
26 °C
Night
17 °C
Sea
18 °C
Precipitation
80 mm
in month
Rainy days
9 days
in month
Daylight
15 hours
average
Sunshine
9 hours
average
Humidity
73 %
Overview: Cape Cod
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We make the most from 40 years of historical weather data to predict the best weather conditions.Weather overview for Cape Cod
Weather overview
Cape Cod (United States of America) is a place with a mild continental climate. The day temperatures range from 3 °C (38 °F) in January to 26 °C (78 °F) in July. The highest sea temperatures in Cape Cod are in August with 19 °C (67 °F) and the lowest in February with 3 °C (38 °F). The least rainy month in Cape Cod is September with its 8 days of rain, the rainiest month is December, when it rains 12 days. Temperatures during the night go from -5 °C (23 °F) in January to 17 °C (63 °F) in July.
January weather
The sea temperature descents similarly to the previous month in Cape Cod, while the day temperature is on its minimum, the value of this measure is 3 °C (38 °F). The number of rainy days starts to descent, with its value being 11 days, and the beginning of the descent of the rainfall amount could be noticed as well, its value is 87 mm (3.42 in). The minimum of the night temperature is observable, the value of this measure is -5 °C (23 °F). The number of sun hours (without clouds) rise's start could be observed, its value is 5 hours.
February weather
The minimum of the sea temperature can be noticed, its value is 3 °C (38 °F) in Cape Cod, while the day temperature rise's start could be observed in February. The beginning of the rise of the night temperature could be noticed, with its value of -4 °C (24 °F). The rise of the number of sun hours (without clouds) can be observed, the value of this measure is 6 hours. The wind speed is on its maximum, with its value of 6. The humidity is on its minimum, its value is 65 %.
March weather
The rainfall amount starts to rise in March in Cape Cod. The day temperature rises similarly to the previous month, with its value being 7 °C (45 °F), and the rise of the night temperature can be observed as well, its value is -1 °C (31 °F). The number of sun hours (without clouds) continues to rise.
We aggregate data from combining multiple weather sources to ensure accuracy of the highest order.April weather
The beginning of the rise of the sea temperature could be noticed, the value of this measure is 6 °C (43 °F) in Cape Cod, while the day temperature rises similarly to the previous month. The rise of the night temperature can be observed, the value of this measure is 4 °C (39 °F). The rise of the number of sun hours (without clouds) can be observed, its value is 7 hours.
May weather
The day temperature continues to rise, with its value being 17 °C (63 °F) in Cape Cod, and the rise of the sea temperature can be observed too, its value is 10 °C (49 °F). The rainfall amount starts to descent in this month. The rise of the night temperature can be observed, with its value being 9 °C (47 °F). The rise of the number of sun hours (without clouds) can be observed, the value of this measure is 8 hours.
June weather
The rise of the day temperature can be observed, with its value being 23 °C (73 °F) in Cape Cod, and the sea temperature continues to rise too, its value is 14 °C (57 °F). The rise of the night temperature can be observed, with its value being 14 °C (57 °F). The maximum of the day length can be noticed in June. The maximum of the number of sun hours (without clouds) can be noticed in this month.
July weather
The tourist season is about to start in Cape Cod. The day temperature is on its maximum, with its value of 26 °C (78 °F), while the sea temperature continues to rise, its value is 18 °C (64 °F). The number of rainy days starts to descent, the value of this measure is 9 days, while the minimum of the rainfall amount is observable, with its value being 80 mm (3.13 in). The night temperature reaches its maximum, its value is 17 °C (63 °F).
We make the most from 40 years of historical weather data to predict the best weather conditions.August weather
The maximum of the sea temperature can be noticed, the value of this measure is 19 °C (67 °F) in Cape Cod. The tourist season is taking place. The minimum of the wind speed can be noticed in August. The number of sun hours (without clouds) descent's start could be observed in August.
September weather
The day temperature descent's start could be observed, the value of this measure is 22 °C (71 °F) in Cape Cod, and the sea temperature descent's start could be observed too. The minimum of the number of rainy days is observable, with its value of 8 days, while the beginning of the rise of the rainfall amount could be noticed, with its value being 90 mm (3.56 in). The beginning of the descent of the night temperature could be noticed, with its value of 13 °C (56 °F). The number of sun hours (without clouds) continues to descent, with its value being 7 hours.
October weather
The day temperature continues to descent, with its value of 16 °C (61 °F) in Cape Cod, and the descent of the sea temperature can be observed too, with its value of 14 °C (57 °F). The beginning of the rise of the number of rainy days could be noticed, its value is 9 days, while the rainfall amount continues to rise, its value is 100 mm (3.94 in). The night temperature continues to descent. The number of sun hours (without clouds) continues to descent, the value of this measure is 7 hours.
November weather
The sea temperature descents similarly to the previous month, with its value being 10 °C (51 °F) in Cape Cod, and the day temperature descents similarly to the previous month too, with its value being 12 °C (53 °F). The rise of the number of rainy days can be observed, with its value being 11 days, while the rainfall amount reaches its maximum, the value of this measure is 111 mm (4.36 in). The descent of the night temperature can be observed, the value of this measure is 3 °C (38 °F). The number of sun hours (without clouds) continues to descent, with its value being 5 hours.
December weather
The day temperature continues to descent, with its value being 7 °C (44 °F) in Cape Cod, and the sea temperature continues to descent as well, the value of this measure is 7 °C (45 °F). The night temperature descents similarly to the previous month, the value of this measure is -2 °C (29 °F). The number of rainy days is on its maximum in this month. The day length is on its minimum in this month. The number of sun hours (without clouds) reaches its minimum, with its value being 4 hours.
FAQs
Are there good conditions to visit in June in Cape Cod?
Cape Cod can be visited in June - the weather will be moderate. The temperature of 14 °C (57 °F) at night may make it better to dine inside or to put on more clothes for a dinner outside.
What is the sea temperature in July in Cape Cod?
The temperature of the sea in July in Cape Cod is 18 °C (64 °F). At this sea temperature, swimming probably won't be the best experience. You probably won't like to stay in water for a long time. On the other hand, there are a minority of people who seek these conditions.
Is there a wet season in August in Cape Cod?
No, there is no wet season in August in Cape Cod - you can expect 9 days of rain during the month.
What temperature can I expect during the day in September in Cape Cod?
The average daily temperature in September in Cape Cod is 22 °C (71 °F). A comfortable temperature for most people, where it is neither too cold nor too hot, and a large number of activities can be carried out comfortably, including sunbathing by the water. Lighter clothing will be suitable - shorts, skirts, t-shirts, jackets; a light sweater and long trousers may also be useful.