Bar Harbor (ME) Temperature by Month
Bar Harbor, Maine, United States of America has an average annual maximum temperature of 13°C (55°F), ranging from 0°C (32°F) in January to 25°C (77°F) in July. Below you'll find a full monthly breakdown and a comparison with cities worldwide.
Bar Harbor Monthly Temperatures
The climate in Bar Harbor is dynamic, ranging widely from very cold in winter to comfortable in summer. Nights are significantly colder, with lows dropping from 16°C (61°F) in July to -9°C (16°F) in January.
The chart below illustrates the average maximum day and minimum night temperatures in Bar Harbor 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.
The chart below shows the average temperature throughout the year:
Daily Historical Temperatures
48-year average (1976-2025)
Average high and low temperatures for each day of the month based on long-term records.
Average temperatures in July
Historical Bar Harbor Temperatures: 1976-2026
Browse day-by-day temperature records for Bar Harbor spanning 51 years. Select any month and year to see actual high and low temperatures recorded on each day.
Temperature: Bar Harbor 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.
very warm
warm
pleasant
moderate
cold
very cold
Bar Harbor vs World: Temperature Compared
Bar Harbor's average annual maximum temperature is 13°C (55°F). To put that in context, here's how it compares to a few well-known destinations:
Barcelona, Spain has an annual average of around 21°C (70°F), with warm summers and mild, fairly short winters.
Toronto, Canada averages 13°C (55°F) annually, with cold snowy winters balanced by genuinely warm summers.
New York City, USA averages 17°C (63°F) a year, with hot humid summers and cold winters that bring regular snowfall.
Brisbane, Australia averages 26°C (79°F) a year, with warm winters and hot, humid summers.
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 Bar Harbor this rarely lasts long on the ground.
For more on Bar Harbor's weather — including monthly rainfall, sunshine hours, and humidity — visit our Bar Harbor climate page.
