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Portland Weather and Climate: A Comprehensive Guide

Portland has relatively stable weather with mild temperatures. It receives a moderate amount of precipitation. Let’s explore the climate details in depth to provide you with a complete overview.

Average maximum day and minimum night temperature

With minimal seasonal shifts, Portland experiences a constant climate year-round. On average, daytime temperatures range from a pleasant 21°C in February to a moderate 14°C in August.

Nighttime temperatures can drop, with average lows reaching 10°C in August. Check out our detailed temperature page for more information.

Temperature ranges by month

Precipitation and rainy days

Generally, Portland receives mid-range precipitation levels, with 856 mm annually. The seasons in Portland, bring significant changes in precipitation. The wettest month, August, receives high rainfall, with an average of 116 mm of precipitation. This rainfall is distributed across 10 rainy days.

In contrast, the driest month, February, experiences much less rainfall, totaling 36 mm over 8 rainy days. These distinct seasonal differences provide diverse experiences throughout the year. For more details, please visit our Portland Precipitation page.

The mean monthly precipitation over the year, including rain, hail and snow

Forecast for Portland

Wed   Jan 15
22°C | 14°C
SW 11 m/s
7.5 mm
partly cloudy and rain

partly cloudy and rain

Thu   Jan 16
21°C | 14°C
SW 7 m/s
0.7 mm
broken clouds and  chance of rain

broken clouds and chance of rain

Fri   Jan 17
22°C | 14°C
SE 8 m/s
0.2 mm
partly cloudy and  chance of slight rain

partly cloudy and chance of slight rain

Select a Month of Interest

Check the conditions for any month of the year.

The best time of year to visit Portland in Australia

During the months of January, February and March you are most likely to experience good weather with pleasant average temperatures that fall between 20°C and 26°C.

Other facts from our historical weather data:
  • Which is the warmest month in Portland?
    February has an average maximum temperature of 21°C and is the warmest month of the year.
  • Which is the coldest month in Portland?
    The coldest month is August with an average maximum temperature of 14°C.
  • Which is the wettest month in Portland?
    August tops the wettest month list with 116 mm of rainfall.
  • Which is the driest month in Portland?
    February is the driest month with 36 mm of precipitation.

  • No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.