Arch Cape (OR) Temperature by Month
The average annual maximum temperature in Arch Cape, Oregon, United States of America is 14°C (57°F), with daytime highs ranging from 8°C (46°F) in December to 21°C (70°F) in August. This page covers monthly averages, day-night differences, and how Arch Cape compares to cities worldwide.
Arch Cape Monthly Temperatures
Visitors to Arch Cape can expect significant temperature changes throughout the year. Nighttime temperatures also vary widely, ranging from 12°C (54°F) in August to 2°C (36°F) in December.
The chart below illustrates the average maximum day and minimum night temperatures in Arch Cape by month:
From around 4 AM to 6 AM temperatures are at their lowest; by 3 PM they've climbed to their daily peak. August, the warmest month, averages 299 hours of sunshine.
The chart below shows the average temperature throughout the year:
Temperature: Arch Cape vs the United States of America
The map below shows the annual temperature across the United States of America. You can also select individual months if you want to compare a specific time of year.
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Arch Cape vs World: Temperature Compared
Arch Cape's average annual maximum temperature is 14°C (57°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.
Zermatt, Switzerland averages just 4°C (39°F) annually due to its altitude, with very cold winters and cool summers even at its warmest.
Shanghai, China averages 21°C (70°F) a year, with warm summers, mild winters, and a noticeable spring and autumn.
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.
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 Arch Cape's weather — including monthly rainfall, sunshine hours, and humidity — visit our Arch Cape climate page.
