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Barnstable County

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Barnstable County Weather, Climate and Best Time to Visit

Data source：Meteostat
Update date：2025-09

Barnstable County year round climate

  • Spring (March–May): Average 40–55°F, mild and rainy with occasional showers. March and April experience more rainfall. Common activities: Coastal walks, flower viewing. Suggested attire: Light jacket, comfortable long pants or skirt, rain gear.
  • Summer (June–August): Average 65–73°F, warm and humid with occasional showers. July is the warmest month. Common activities: Beach activities, water sports, outdoor picnics. Suggested attire: Light and breathable short-sleeved clothing, shorts, swimwear, sun hat.
  • Autumn (September–November): Average 55–64°F, comfortable and pleasant. September has the most rainfall. Common activities: Maple leaf viewing, hiking, seaside strolls. Suggested attire: Comfortable long-sleeved shirts, light jacket, comfortable pants.
  • Winter (December–February): Average 34–37°F, cold and dry with low probability of snowfall. December and January experience more rainfall. Common activities: Indoor activities, museum visits. Suggested attire: Warm coat, hat, scarf, gloves.

Barnstable County climatological average

Annual average temperature: approx. 51.8°F / Annual rainfall: approx. 1286 mm / Summer humidity: 65%–75% / Rainiest month: September

Barnstable County monthly average temperature and precipitation

Month
Air temperature (°F)
Precipitation (mm)
January
34.5°F
118
February
34.9°F
55.7
March
40.8°F
125
April
47.8°F
133
May
55.9°F
84
June
65.1°F
52.7
July
73.9°F
119.7
August
71.4°F
129.3
September
64.8°F
168.7
October
55.4°F
76
November
46.2°F
80
December
37.9°F
144.3

Barnstable County weather for the next seven days

12/19
Friday
Heavy rain
51.4°F/37°F
12/20
Saturday
Sunny
37.9°F/29.3°F
12/21
Sunday
Overcast
44.4°F/31.6°F
12/22
Monday
Sunny
30.4°F/27.2°F
12/23
Tuesday
Light freezing rain
38.8°F/28.7°F
12/24
Wednesday
Sunny
35°F/28.8°F
12/25
Thursday
Sunny
37.5°F/28.6°F

Barnstable County Frequently Asked Questions and Useful Information for Travel

What is the best time to visit?

The best time to visit is usually in spring and autumn, when the weather is mild and the scenery is beautiful.

What are the must-visit attractions?

Must-visit attractions include Bonstableshire's ancient castles, stunning hills and lush green meadows.