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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 4.9–13.3°C, 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 18.4–23.3°C, 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 13.0–18.2°C, 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 1.4–3.3°C, 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. 11°C / Annual rainfall: approx. 1286 mm / Summer humidity: 65%–75% / Rainiest month: September

Barnstable County monthly average temperature and precipitation

Month
Air temperature (°C)
Precipitation (mm)
January
1.4°C
118
February
1.6°C
55.7
March
4.9°C
125
April
8.8°C
133
May
13.3°C
84
June
18.4°C
52.7
July
23.3°C
119.7
August
21.9°C
129.3
September
18.2°C
168.7
October
13°C
76
November
7.9°C
80
December
3.3°C
144.3

Barnstable County weather for the next seven days

3/29
Sunday
Sunny
9°C/-2.1°C
3/30
Monday
Overcast
10.5°C/3.4°C
3/31
Tuesday
Cloudy
9.5°C/7.3°C
4/1
Wednesday
Patchy rain nearby
9.6°C/8.7°C
4/2
Thursday
Patchy rain nearby
5.6°C/3.9°C
4/3
Friday
Patchy rain nearby
5.6°C/4.1°C
4/4
Saturday
Patchy rain nearby
5.3°C/3.9°C

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.