Nantucket (MA) Temperature by Month
Nantucket in Massachusetts, United States of America sees significant seasonal temperature differences, with daytime highs between 4°C (39°F) in February and 24°C (75°F) in July, averaging 14°C (57°F) annually. Explore the full monthly breakdown below.
Nantucket Monthly Temperatures
The weather in Nantucket experiences significant differences between warm and cold seasons, with big shifts in temperature. At night, minimum temperatures range from 18°C (64°F) in July to -3°C (27°F) in February.
The chart below illustrates the average maximum day and minimum night temperatures in Nantucket by month:
The minimum temperature is often recorded between 4 AM and 6 AM, while the highest temperature is usually reached at 3 PM, when the sun's heating effect is strongest. July, the warmest month, gets 301 hours of sunshine.
The chart below shows the average temperature throughout the year:
Temperature: Nantucket 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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Nantucket vs World: Temperature Compared
Nantucket's average annual maximum temperature is 14°C (57°F). To put that in context, here's how it compares to a few well-known destinations:
Seville, Spain averages 23°C (73°F) a year — one of the warmer cities in Western Europe, with long hot summers.
Interlaken, Switzerland averages 8°C (46°F) a year, with cold winters and cool summers thanks to its Alpine setting.
New York City, USA averages 17°C (63°F) a year, with hot humid summers and cold winters that bring regular snowfall.
Adelaide, Australia averages 21°C (70°F) a year, with warm summers, mild winters, and relatively low rainfall year-round.
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.
Whether a city sits on the coast or deep inland makes a significant difference to its climate. Coastal areas tend to have more stable temperatures year-round — large bodies of water absorb heat slowly in summer and release it gradually in winter, keeping extremes in check. Cities far from the sea don't benefit from that buffer, which is why continental climates tend to have hotter summers and colder winters than their coastal counterparts at the same latitude.
For more on Nantucket's weather — including monthly rainfall, sunshine hours, and humidity — visit our Nantucket climate page.
