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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
2/3
Tuesday
Sunny
2.1°C/-11.5°C
2/4
Wednesday
Sunny
1.5°C/-7.6°C
2/5
Thursday
Cloudy
0°C/-4.9°C
2/6
Friday
Partly Cloudy
-2.9°C/-6.8°C
2/7
Saturday
Heavy snow
-2°C/-14.5°C
2/8
Sunday
Light snow
-11.1°C/-16.1°C
2/9
Monday
Blowing snow
-5.2°C/-16.6°C
