30YearWeather
Portland
When to avoid visiting Portland, United States
Seasonal Comparison

Least Favorable Months in Portland

Based on 30 years of NASA satellite data, Portland enjoys relatively good weather year-round. However, if you're comparing months, January, February, March are the least favorable — though still perfectly visitable.

January63/100February63/100March63/100

Good news: Portland has no truly bad months!

With a score of 63/100, even January(the "worst" month) is still a reasonable time to visit. These months are simply the least favorable compared to other months in Portland, not objectively bad. Many travelers enjoy visiting during these periods and benefit from lower prices and fewer crowds.

Why January is the Least Favorable (But Still Okay) Time to Visit Portland

Is January a Good Time to Visit Portland?

👌A reasonable choice for your trip
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

930 observations30-year historical data
Confidence: 95%

Key Challenges During These Months

Challenging Conditions

Weather conditions may limit outdoor activities and sightseeing options

Months to Avoid: Detailed Breakdown

Worst63

January

Very high humidity

View details
2nd Worst63

February

Very high humidity

View details
3rd Worst63

March

Very high humidity

View details

Looking for the Best Time Instead?

Discover the optimal months to visit Portland with ideal weather conditions, fewer crowds, and better prices.

Best Time to Visit Portland

Frequently Asked Questions

When should I avoid visiting Portland?

Based on 30 years of data, the most challenging months are January, February, March. Primary concerns include: very high humidity.

What is the worst month to visit Portland?

January is typically the most challenging month, scoring only 63/100 in our travel conditions analysis.

Can I still visit during these months?

Yes, many travelers still visit during challenging months. Come prepared with appropriate gear, flexible bookings, and backup plans. Lower prices and fewer tourists can offset the weather challenges.

Are hotels cheaper during these months?

Often yes. Low season typically means reduced hotel rates, easier reservations, and fewer crowds at popular attractions. Some travelers prefer this trade-off.