Port Alberni (BC) Temperature by Month

The average annual maximum temperature in Port Alberni, British Columbia, Canada is 13°C (55°F), with daytime highs ranging from 6°C (43°F) in December to 22°C (72°F) in August. This page covers monthly averages, day-night differences, and how Port Alberni compares to cities worldwide.

The climate in Port Alberni is dynamic, ranging widely from chilly in winter to pleasant in summer. Nights are significantly colder, with lows dropping from 13°C (55°F) in August to 1°C (34°F) in December.

The chart below illustrates the average maximum day and minimum night temperatures in Port Alberni by month:

The coolest part of the day is typically between 4 AM and 6 AM, while 3 PM is usually the warmest, when solar heating is at its peak. August, the city's warmest month, averages 299 hours of sunshine.

The chart below shows the average temperature throughout the year:

Port Alberni's average annual maximum temperature is 13°C (55°F). To put that in context, here's how it compares to a few well-known destinations:

Seville, Spain averages 23°C (73°F) a year, one of the warmer cities in Western Europe, with long hot summers.

Queenstown, New Zealand averages 10°C (50°F) annually, remember seasons are flipped, so its coldest months fall in June and July.

Seoul, South Korea averages 18°C (64°F) a year, with four clear seasons, cold winters, and hot humid summers.

Tokyo, Japan averages 21°C (70°F) a year, with hot summers, cool winters, and a well-defined cherry blossom spring.

Climate temperature data is typically calculated as a 30-year average. This smooths out year-to-year variability and gives a more reliable picture of what a place is actually like, rather than what happened in any single unusual year.

The readings come from a range of sources, land-based weather stations, ocean buoys, ships, and satellites. That data is collected by weather services around the world, then pooled, quality-checked, and averaged to produce the climate records you see here.

Whether a city sits on the coast or deep inland makes a significant difference to its climate. Coastal areas tend to have more stable temperatures year-round, large bodies of water absorb heat slowly in summer and release it gradually in winter, keeping extremes in check. Cities far from the sea don't benefit from that buffer, which is why continental climates tend to have hotter summers and colder winters than their coastal counterparts at the same latitude.

For more on Port Alberni's weather, including monthly rainfall, sunshine hours, and humidity, visit our Port Alberni climate page.