The best times to visit Portland for ideal weather are
October 15th to April 22nd
based on average temperature and humidity from NOAA (the National Oceanic and Atmospheric Administration). Read below for more weather and travel details.
Portland Travel Guide
Other Portland Travel Info
Weather in Portland
Average temperatures in Portland vary little. Considering humidity, temperatures feel nice most of the year, excluding some cold weeks in the winter, with a fair chance of precipitation about half of the year. The area is somewhat temperate — in the 56th percentile for pleasant weather — compared to tourist destinations worldwide. Weeks with ideal weather are listed above. If you’re looking for the very warmest time to visit Portland, the hottest months are February, January, and then March. See average monthly temperatures below. The warmest time of year is generally early to mid February where highs are regularly around 73.6°F (23.1°C) with temperatures rarely dropping below 60.8°F (16°C) at night.
Portland Temperatures (Fahrenheit)
Portland Temperatures (Celsius)
The way we experience weather isn’t all about temperature. Higher temperatures affect us much more at higher humidity, and colder temperatures feel piercing with high winds. Our perceived temperatures factor in humidity and wind chill to better represent how hot or cold the day feels to a person.
Portland Perceived Temperature (F)
Portland Perceived Temperature (C)
Average Portland Temperatures by Month
Daily highs (averaged for the month) usually give the best indication of the weather. A significantly lower mean and low generally just means it gets colder at night.
|Month||Avg. High (°F)||Avg. Mean (°F)||Avg. Low (°F)|
|Month||Avg. High (°C)||Avg. Mean (°C)||Avg. Low (°C)|
Precipitation (Rain or Snow)
If dry weather is what you’re after, the months with the lowest chance of significant precipitation in Portland are February, January, and then November. Note that we define “significant precipitation” as .1 inches or more in this section. The lowest chance of rain or snow occurs around late February and early March. For example, on the week of February 26th there are no days of precipitation on average. By contrast, it’s most likely to rain or snow in early August with an average of 3 days of significant precipitation the week of July 30th.
When can you find snow in Portland? Weather stations report no annual snow. Please note that a value of 0 for snow in the graph below may either mean there was no snow, or that snow is unreported.
Chance of Precipitation
The graph below shows the % chance of rainy and snowy days in Portland.
Snow on the Ground
The graph below shows the average snow on the ground in Portland (in).
Average Rain and Snow by Month
|Month||Daily Chance of Rain||Average Snow Depth (in)||Total Precipitation (in)|
|Month||Daily Chance of Rain||Average Snow Depth (cm)||Total Precipitation (cm)|
Humidity and Wind
Portland has some very humid months, and above average humidity throughout the year. The least humid month is October (66.3% relative humidity), and the most humid month is June (75.1%).
Wind in Portland is usually stronger than many places. The windiest month is August, followed by September and October. August’s average wind speed of around 13.3 knots (15.3 MPH or 24.6 KPH) is considered “a moderate breeze.” Maximum sustained winds (the highest speed for the day lasting more than a few moments) are at their highest in early August where average top sustained speeds reach 19.7 knots, which is considered a fresh breeze.
Relative Humidity (%)
The graph below shows the average % humidity by month in Portland.
The graph below shows wind speed (max and average) in knots.
Average Wind Speeds
Show Wind Speeds
All wind speeds are in knots. 1 knot = 1.15 MPH or 1.85 KPH.
|Month||Avg. Wind||Avg. Wind Feel||Sustained High Wind||High Wind Feel|
|Jan||11.5||Significant breeze||16||Significant breeze|
|Feb||12||Significant breeze||16.3||Significant breeze|
|Mar||10.9||Gentle breeze||15.7||Significant breeze|
|Apr||10.6||Gentle breeze||15.1||Significant breeze|
|May||11.3||Significant breeze||15.8||Significant breeze|
|Jun||12.1||Significant breeze||17||Strong breeze|
|Jul||12.3||Significant breeze||17.2||Significant breeze|
|Aug||13.3||Significant breeze||18.6||Strong breeze|
|Sep||12.4||Significant breeze||18||Significant breeze|
|Oct||12.3||Significant breeze||17.6||Strong breeze|
|Nov||11.8||Significant breeze||16.6||Significant breeze|
|Dec||11.6||Significant breeze||16.6||Significant breeze|
Show Relative Humidity by Month
|Month||Avg. Relative Humidity|
Is it Safe to Travel to Portland?
Our best data indicates this area is generally safe. As of Oct 07, 2019 there are no travel advisories or warnings for Australia; exercise normal security precautions. Check this page for any recent changes or regions to avoid: Travel Advice and Advisories. This advisory was last updated on Aug 22, 2019.
The Busiest and Least Crowded Months
The busiest month for tourism in Portland, VC, Australia is February, followed by June and December. Prices for hotels and flights will be most expensive during these months, though you can save if you purchase well in advance. Tourists are unlikely to visit Portland in July. Those willing to visit at these times will likely find it the least expensive month.
Estimated Tourism by Month
Most Popular Months to Visit
Overall Portland Travel Experience by Season
Fall (March through May)
Humidity and temperatures combine to make this season feel moderate. Highs range from 71.7°F (22.1°C) and 59.7°F (15.4°C) with colder temperatures in the later months. Rain is somewhat common with 4 to 8 days of significant precipitation per month. Fall is the slowest for tourism, which makes it a good time for those looking for deals.
Winter (June through August)
The middle-year months have cold weather with high temperatures that are brisk. These months see the most precipitation with 9 to 11 days of precipitation per month. June – August is the second busiest season for tourism in Portland, so lodging and other accommodations may cost slightly more.
Spring (September through November)
Spring daily highs range from 69.6°F (20.9°C) and 60.3°F (15.7°C), which will feel comfortable given the humidity and wind. It rains or snows a significant amount: 3 to 8 days per month. Tourism is fairly slow during these months due to the weather, so hotels may be lower priced.
Summer (December through February)
Weather is somewhat cool this time of year in Portland to be enjoyable for warm weather travelers. The average high during this season is between 73.6°F (23.1°C) and 67.3°F (19.6°C). On average, it rains or snows a smalll amount: 2 to 4 times per month. These times of year are the busiest with tourists.