Swim in Portland in march 2025What is the temperature of the sea in in march?
Average sea temperature in Portland in march 2025.
In march, according to seasonal norms, the sea temperature in Portland is:
Minimum: 46°F
Average: 49°F
Maximum: 52°F
Other useful seasonal weather averages in march:
- Outside temperature: 41°F to 53°F
- Most common weather: "Moderate rain at times"
- The wind blows at 2.5mph
- It rains a total of 8.2in, over 12 day(s).
Should we swim in Portland in march?
No... The water temperature in Portland in march is freezing
You won't be able to swim in Portland in march! The water temperature is freezing, reaching as low as 46°F (and only 52°F at best)! Our advice: if you are going to Portland this month, plan to sightsee and forget the beach!
Note also that in march, the climate is very bad with an average outside temperature of 47°F, 8.2in of precipitation (over 12 days) and 88.33 % humidity.
Water and normal seasonal temperatures in Portland in march
| March | |||
| Average sea temperature | 49°F | ||
| Minimum sea temperature | 46°F | ||
| Maximum sea temperature | 52°F | ||
| Average outside temperature | 49°F | ||
| Maximum outside temperature | 54°F | ||
| Minimum outside temperature | 41°F | ||
| Wind speed | 7.5mph | ||
| Wind temperature | 40°F | ||
| Precipitation | 8.2in | ||
| Number of days of rain | 12 jour(s) (40%) | ||
| Humidity | 89% | ||
| Visibility in kilometers | 8.43km | ||
| Cloud cover | 55% | ||
| Our opinion | freezing swimming |
Swim elsewhere in the United States (USA) in march
| City | Average T° | Min. T° | Max. T° | Our opinion | California in march | 59°F | 62°F | freezing swimming | Washington D. C. in march | 47°F | 50°F | freezing swimming | Boston in march | 39°F | 42°F | freezing swimming | Miami (Florida) in march | 76°F | 81°F | pleasant swimming | New York City in march | 40°F | 44°F | freezing swimming | Seattle in march | 46°F | 49°F | freezing swimming | Houston in march | 63°F | 71°F | cool swimming | Long Beach (Washington) in march | 49°F | 53°F | freezing swimming | Myrtle Beach in march | 57°F | 61°F | freezing swimming | Philadelphia in march | 41°F | 45°F | freezing swimming | Atlantic City in march | 41°F | 45°F | freezing swimming | Baltimore in march | 45°F | 49°F | freezing swimming | Bar Harbor (Maine) in march | 39°F | 42°F | freezing swimming | Brooklyn in march | 41°F | 45°F | freezing swimming | Cape Cod National Seashore in march | 40°F | 42°F | freezing swimming | Carolina Beach in march | 59°F | 65°F | freezing swimming | Gulf Shores (Alabama) in march | 64°F | 71°F | cool swimming | Hampton Beach in march | 39°F | 42°F | freezing swimming | Maryland in march | 46°F | 49°F | freezing swimming | Mobile (Alabama) in march | 64°F | 71°F | cool swimming |
Swim in the United States (USA) in march: sea temperature by city