Barnstable (MA) Temperature by Month
Barnstable in Massachusetts, United States of America sees significant seasonal temperature differences, with daytime highs between 4°C (39°F) in February and 27°C (81°F) in July, averaging 15°C (59°F) annually. Explore the full monthly breakdown below.
Barnstable Monthly Temperatures
With significant temperature fluctuations, Barnstable enjoys distinct seasons year-round. Nighttime lows range from 19°C (66°F) in July to -5°C (23°F) in February.
The chart below illustrates the average maximum day and minimum night temperatures in Barnstable by month:
Low temperatures are most often recorded between 4 AM and 6 AM, while highs typically occur around 3 PM. July, the city's warmest month, sees 301 hours of sunshine.
The chart below shows the average temperature throughout the year:
Temperature: Barnstable vs the United States of America
The map below shows the annual temperature across the United States of America. You can also select individual months if you want to compare a specific time of year.
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Barnstable vs World: Temperature Compared
Barnstable's average annual maximum temperature is 15°C (59°F). To put that in context, here's how it compares to a few well-known destinations:
Rome, Italy averages 20°C (68°F) annually, with reliably warm summers and comfortable winters.
Queenstown, New Zealand averages 10°C (50°F) annually — remember seasons are flipped, so its coldest months fall in June and July.
Osaka, Japan averages 22°C (72°F) annually, with hot humid summers, mild winters, and pleasant spring and autumn seasons.
Perth, Australia averages 25°C (77°F) annually, with a classic Mediterranean climate — hot dry summers and mild wet winters.
Climate temperature data is typically calculated as a 30-year average. This smooths out year-to-year variability and gives a more reliable picture of what a place is actually like, rather than what happened in any single unusual year.
The readings come from a range of sources — land-based weather stations, ocean buoys, ships, and satellites. That data is collected by weather services around the world, then pooled, quality-checked, and averaged to produce the climate records you see here.
Seasonal temperature shifts influence more than just how warm it feels — they also drive changes in rainfall, cloud cover, and wind patterns throughout the year.
Warmer air holds more moisture, which tends to mean heavier or more frequent rain during the warmer months. When temperatures drop in winter, any precipitation that does fall is more likely to come as snow or sleet, though in Barnstable this rarely lasts long on the ground.
For more on Barnstable's weather — including monthly rainfall, sunshine hours, and humidity — visit our Barnstable climate page.
