Portland · April
Run in the morning.
Cool month: average high 59°F, low 42°F. Humidity averages 77% — the limiting factor on most runs. Expect 19 rain days — plan around the radar. Cool, runnable conditions throughout — morning still has the steadiest air and lightest wind.
Avg high / low
59° / 42°F
Humidity
77%
Rain days
19/mo
Wind
10 mph
What April feels like in Portland
Sunrise
06:23
Mid-month average
Sunset
19:57
Mid-month average
Time-of-day breakdown
Morning
Coolest, driest air of the day. The window before sunrise is the most reliable comfortable hour.
Midday
Mild but UV and traffic peak. Workable if you don't mind shifting your pace.
Evening
Warm and runnable. Crowded routes but the air's typically calm.
What to wear running in Portland in April
The kit for April in Portland: a long-sleeve or light jacket for the first mile, a water-resistant cap or jacket on standby.
April vs the surrounding months
vs March
+6° avg high
-1 rain days
Portland in March →
April
59°F avg high
19 rain days
Best: morning
vs May
-8° avg high
+5 rain days
Portland in May →
Frequently Asked Questions
What is the best time of day to run in Portland in April?+
Morning. Cool, runnable conditions throughout — morning still has the steadiest air and lightest wind.
What's the average temperature in Portland in April?+
Average high 59°F, average low 42°F.
How does April compare to surrounding months in Portland?+
Compared to March (avg high 54°F), April is warmer. Compared to May (avg high 68°F), April is cooler.
Does it rain often in Portland in April?+
Expect about 19 measurable rain days in April, on average.