Portland Weather in March

Portland in March sees low daytime temperatures of 6°C (43°F) and nighttime lows of -4°C (25°F). Rainfall is fairly high this month at around 109 mm (4.3 in), so pack a rain jacket to stay dry.

Rainfall in Portland in March

Records from the past 30 years suggest around 11 days of snow/rain, with 109 mm (4.3 in) average for the month. When showers do arrive, they tend to be on the heavier side. Worth being prepared even if rain days are not that numerous.

Temperature in Portland in March

In March, Portland sees low temperatures, with highs of 6°C (43°F). Nights drop to around -4°C (25°F). It stays cool throughout the day, so warm layers are a good idea from morning to evening. With overnight lows of -4°C (25°F), temperatures fall below freezing at night. An extra thick blanket can make a real difference if your accommodation runs cold.

Sunshine in Portland in March

The days are predominantly sunny, with an estimated total of around 205 hours of sunshine. Despite the cool temperatures, these sun-filled days are perfect for playing sports, visiting parks, or going for a bike ride.

Average water temperature in March

With water temperatures around 3°C (37°F), swimming isn't really an option for most visitors. The cold sets in quickly and a wetsuit won't fully solve it.

Our weather planner can help you find worldwide destinations with pleasant weather during this period. June, July, August and September typically offer the best weather for Portland.