The climate in Portland during March can be summarized as mild and reasonably dry.
March is in the fall / autumn in Portland and is typically the 3rd warmest month of the year. Daytime maximum temperatures average around a comfortable 22°C (71°F), whilst at night 13°C (54°F) is normal.
Daytime temperature | 21.8°C 71.2°F |
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Nightly temperature | 12.5°C 54.4°F |
Average temperature | 17.1°C 62.8°F |
Daily sunshine | 7.2 hrs |
Avg rainfall | 44 mm 1.7 ins |
Rainy days | 8 days |
Sea temperature | 17.4°C 63.2°F |
Humidity | 57% |
Windspeed | 21.2kph 13 mph |
On average March is the 3rd driest month of the year in Portland with around 44mm 1.7 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 8 days, although this may vary considerably.
On the flip side this corresponds to an average of 7.2 hours of sunshine per day.
The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Portland in March 2025.
Hottest month: | February | 23.2°C 73.8°F |
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Driest month: | February | 26mm 1ins |
Sunniest month: | February | 9hrs |
Coldest month: | July | 13.1°C 55.6°F |
Wettest month: | July | 112mm 4.4ins |