Portland in March
If March is your window for visiting Portland, here's what the climate data says you can expect.
Daytime highs average 21.9 degrees, dropping to 13.7 degrees overnight. That's a 8-degree swing between day and night. That's solidly pleasant territory. Great for being outdoors.
March is 4.0 degrees warmer than the yearly average here.
You're looking at 14mm of rain across 4 days in a typical March. That's barely a sprinkle.
Sunshine-wise, March delivers around 17.6 MJ/m2 of daily solar radiation. UV sits in the very high category. You'll want SPF 50+ and a decent hat.
Our Comfort Score rates March at 9.2/10. That's about as good as it gets.
Packing tip: bring a decent jumper or fleece, and serious sun protection.
Scroll down for the detailed climate data, or explore what nearby cities are like in March.
March at a Glance
Temperature Range
Daily temperature range in March. The bar shows the typical spread between overnight lows and afternoon highs.
What to Pack
- Layered clothing for mild to cool conditions
- Sunscreen (SPF 30+) and sunglasses for UV protection
Coming From Overseas?
How March in Portland stacks up against major cities around the world.
About 10 degrees warmer and considerably drier.
About 12 degrees warmer and considerably drier.
About 8 degrees warmer and considerably drier.
How March Compares
Portland's monthly climate at a glance. March is highlighted.
| Month | Max | Min | Rain | Comfort |
|---|---|---|---|---|
| Jan | 21.2 | 14.6 | 71mm | 8.2 |
| Feb | 22.2 | 13.5 | 5mm | 10.0 |
| Mar | 21.9 | 13.7 | 14mm | 9.2 |
| Apr | 16.9 | 11.3 | 54mm | 4.0 |
| May | 15.9 | 9.7 | 23mm | 3.5 |
| Jun | 13.2 | 7.6 | 37mm | 1.5 |
| Jul | 13.0 | 7.4 | 84mm | 1.0 |
| Aug | 16.2 | 9.4 | 70mm | 3.4 |
| Sep | 14.8 | 10.0 | 90mm | 2.3 |
| Oct | 17.7 | 10.4 | 68mm | 5.6 |
| Nov | 19.8 | 12.0 | 91mm | 7.1 |
| Dec | 21.5 | 13.2 | 41mm | 9.1 |