Anacortes (WA) Temperature by Month

Anacortes in Washington State, United States of America sees significant seasonal temperature differences, with daytime highs between 7°C (45°F) in December and 23°C (73°F) in July, averaging 15°C (59°F) annually. Explore the full monthly breakdown below.

Visitors to Anacortes will encounter a climate influenced by big temperature differences across the year. Nighttime temperatures range from 12°C (54°F) in July to 2°C (36°F) in December.

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

Low temperatures are most often recorded between 4 AM and 6 AM, while highs typically occur around 3 PM. July, the city's warmest month, sees 331 hours of sunshine.

The chart below shows the average temperature throughout the year:

Anacortes's average annual maximum temperature is 15°C (59°F). To put that in context, here's how it compares to a few well-known destinations:

Rome, Italy averages 20°C (68°F) annually, with reliably warm summers and comfortable winters.

On the cooler end, Oslo, Norway averages just 10°C (50°F) annually, with pleasant summers but long, cold winters.

Osaka, Japan averages 22°C (72°F) annually, with hot humid summers, mild winters, and pleasant spring and autumn seasons.

Melbourne, Australia averages 20°C (68°F) annually, known for unpredictable weather, with four seasons sometimes happening in one day.

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.

For cities and regions with significant elevation, altitude is one of the biggest factors shaping local temperatures. As a rule of thumb, temperatures fall by around 6°C for every 1,000 metres gained, so a city at 2,000 metres will typically be around 12°C cooler than a city at sea level in the same region. Higher ground also tends to see more dramatic day-to-night temperature swings, since thinner air loses heat faster after sunset.

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