December · United States
Best time to visit Portland in December Weather, crowds & prices
Weather in Portland in December
Average temperature 5°C, 287 mm of rain, about 0 days with 6+ hours of sunshine and 93% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
December score
2.0/10
Ranked #12 of 12 months
- Avg temp
- 5°C
- Rainfall
- 287 mm
- Humidity
- 93%
- Days with 6h+ sun
- 0
- Crowd Density
- Quiet / Uncrowded
- Average Expenses
- $ · Budget Friendly ($)
December in Portland scores 2.0/10 for sightseeing and cultural travel - ranked #12 of 12. Expect around 5°C, 287 mm of rain, and roughly 0 days with 6+ hours of sunshine this month.
Portland pairs a walkable downtown of parks and bookshops with the waterfalls and wine of the Columbia gorge.
December in Portland — the hardest end of the year
December averages 5°C (40°F) — jacket weather. Comfortable for walking and museums, too cool for anything water-based.
287 mm of rain puts this in monsoon territory — almost no days with 6+ hours of sunshine across the whole month, and multi-day washouts are normal.
It scores 2/10 here, 12th of 12 months, against 10/10 in the destination's best month.
Pack a mid-weight jacket, long sleeves and shoes you can walk 15 km in, a proper rain shell rather than an umbrella.
Plan for low-season pricing, with crowds are light for this destination.
Flexible dates? August scores 8 points higher here — enough to change the trip.
Frequently asked
- What is the weather like in Portland in December?
- In December, Portland averages 5°C, 287 mm of rain, and about 0 days with 6+ hours of sunshine. Its climate-comfort score is 2.0/10.
- Is December a good time to visit Portland?
- December earns a 2.0/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in Portland in December?
- Expect about 287 mm of rain in December. Average humidity is 93% and there are about 0 days with 6+ hours of sunshine.
Curated in Portland
Tickets & experiences
Things to do in Portland
Portland, United States. Live activities and tours from GetYourGuide, matched to this destination.