Swimming in Bar Harbor (Maine) in september 2025: Average sea temperature in september and tide times in september 2025

Average sea temperature in Bar Harbor (Maine) in september 2025.

In september, according to seasonal norms, the sea temperature in Bar Harbor (Maine) is:

Minimum: 53°F

Average: 56°F

Maximum: 59°F

Other useful seasonal weather averages in september:

  • Outside temperature: 58°F to 68°F
  • Most common weather: "Clear/Sunny"
  • The wind blows at 8.7mph
  • It rains a total of 3.8in, over 4 day(s).

Should we swim in Bar Harbor (Maine) in september?

No... The water temperature in Bar Harbor (Maine) in september is freezing

You won't be able to swim in Bar Harbor (Maine) in september! The water temperature is freezing, reaching as low as 53°F (and only 59°F at best)! Our advice: if you are going to Bar Harbor (Maine) this month, plan to sightsee and forget the beach!

Note also that in september, the climate is good with an average outside temperature of 63°F, 3.8in of precipitation (over 4 days) and 83.71 % humidity.

Water and normal seasonal temperatures in Bar Harbor (Maine) in september

September
Average sea temperature 56°F
Minimum sea temperature 53°F
Maximum sea temperature 59°F
Average outside temperature 63°F
Maximum outside temperature 68°F
Minimum outside temperature 58°F
Wind speed 10.6mph
Wind temperature 58°F
Precipitation 3.8in
Number of days of rain 4 jour(s)
(14%)
Humidity 84%
Visibility in kilometers 8.77km
Cloud cover 36%
Our opinion freezing swimming

Chart of the tides in september 2025

Tide times in september 2025 in Bar Harbor (Maine)

Swim elsewhere in the United States (USA) in september

City Average T° Max. T° Our opinion
California in september67°F70°Fcool swimming
Washington D. C. in september75°F77°Fpleasant swimming
Boston in september65°F68°Fcool swimming
Miami (Florida) in september86°F87°Fideal swimming
New York City in september70°F74°Fpleasant swimming
Seattle in september54°F56°Ffreezing swimming
Houston in september84°F88°Fideal swimming
Long Beach (Washington) in september58°F60°Ffreezing swimming
Myrtle Beach in september81°F83°Fideal swimming
Philadelphia in september72°F76°Fpleasant swimming
Portland in september56°F59°Ffreezing swimming
Atlantic City in september72°F76°Fpleasant swimming
Baltimore in september74°F77°Fpleasant swimming
Brooklyn in september71°F74°Fpleasant swimming
Cape Cod National Seashore in september65°F68°Fcool swimming
Carolina Beach in september81°F83°Fideal swimming
Gulf Shores (Alabama) in september84°F86°Fideal swimming
Hampton Beach in september63°F67°Fcold swimming
Maryland in september74°F77°Fpleasant swimming
Mobile (Alabama) in september84°F86°Fideal swimming

Swim in the United States (USA) in september: sea temperature by city

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