What is the weather like in Portland in January?

Expect temperatures between 2°C and 8°C with 48% average rain probability and about 8 hours of sunshine daily.

What is the weather like in Portland in January?

Portland in January scores 63/100 based on 30 years of climate data. A reasonable choice for your trip.

Who should visit Portland in January?

January in Portland is ideal for: Cultural tourists, Business travelers.

Portland Weather in January | 30-Year Forecast

Avg High

8°C

Hottest around day 29

Avg Low

2°C

Coolest around day 15

Rainy Days

31days

48% avg rain chance

Sunshine

8hrs/day

Winter season

Essential Travel Info for Portland

🗓️ Best Time to Visit 📖 Travel Guide 🍴 Food Guide

Currency

USD

$ United States dollar

Language

English

Driving

Right side

Safety

Moderate Safety

GPI: 2.44

Travel Intelligence

Exclusive flight analytics & health data for Portland

Smart Flight Estimator

Airport-to-Airport Logistics

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Flight Connectivity Analysis

Airport traffic data & seasonal patterns

Well Connected

62/ 100

Traffic Index

Popular destination

Peak Daily Arrivals

slots per day

Peak

Aug

Low

Jan

Monthly Traffic Distribution

203

Jan

204

Feb

225

Mar

256

Apr

287

May

297

Jun

324

Jul

326

Aug

305

Sep

275

Oct

209

Nov

253

Dec

Traffic Level

Low Season

Key Connections

Seattle Tacoma (SEA)

Los Angeles (LAX)

Denver (DEN)

Phoenix Sky Harbor (PHX)

San Francisco (SFO)

Health & Safety Advisory

CDC travel health recommendations

No Requirements

No Special Vaccinations Required

Standard travel precautions apply

Source: CDC Travelers' Health

View Complete Health Guide

Is January a Good Time to Visit Portland?

👌A reasonable choice for your trip(63/100)

Short Answer

January falls in Portland's wet season: 48% rain probability with average 5mm rainfall. Pack waterproofs and plan flexible indoor alternatives.

Decision Factors

Very high humidity

85% average humidity

Frequent rainfall expected

48% chance of rain - pack waterproofs

Near active volcano: Mount St. Helens

Medium volcanic risk

Shoulder season - balanced conditions

62% of peak - good value with moderate crowds

Good For

🏛️
Cultural tourists
Comfortable conditions for exploring museums and sites
💼
Business travelers
Climate-controlled meetings unaffected by weather

Who Should Avoid

👴
Elderly travelers
85% humidity creates difficult conditions
📸
Photographers
78% cloud cover limits natural light opportunities
💑
Honeymoon couples
Wedding score only 42/100 - better months available

"According to 30YearWeather's analysis of 30 years of NASA POWER satellite data,Portland in January averages 8°C with 48% precipitation probability."

📊 Source: 30YearWeather.com🛰️ Data: NASA POWER (1991-2021)View Methodology →

Frequently Asked Questions: Portland in January

What are the temperatures in Portland in January?

Daytime highs average 8°C, nights drop to 2°C. Temperatures remain fairly consistent.

How many rainy days in Portland in January?

Expect around 31 days with measurable rainfall. An umbrella is advisable.

What to wear in Portland in January?

Warm winter clothing: insulated jacket, boots, gloves.

Is January peak season in Portland?

This is off-peak season. Expect lower prices and fewer crowds.

Portland Weather in January

Portland January Weather Calendar