Seaside (OR) Temperatures: Monthly Averages and Year-Round Insights
On this page, we’ll explore Seaside’s temperature statistics in detail, including day and night variations and monthly averages. We’ll also compare the annual temperature to other cities in the United States of America.
Monthly Temperature Averages
With significant temperature fluctuations, Seaside enjoys distinct seasons year-round. On average, maximum daytime temperatures range from a pleasant 21°C in August to a chilly 9°C in December. Nighttime temperatures can drop, with averages reaching 2°C in December.
The chart below illustrates the average maximum day and minimum night temperatures in Seaside by month:
The early hours of 4 AM to 6 AM often see the lowest temperatures, while 3 PM marks the peak of the day’s heat as the sun’s impact is strongest. August, the city’s warmest month, boasts 299 hours of sunshine.
The chart below shows the average temperature throughout the year:
December, the city’s coldest month, receives about 326 mm of rainfall spread over roughly 24 days. For more information, please visit our Seaside Precipitation page.
Annual Temperatures in the United States of America Compared
The map below shows the annual temperature across the United States of America. You can also select the different months in case you are interested in a specific month.
very warm
warm
pleasant
moderate
cold
very cold
Seaside Temperatures Compared World Wide
Seaside’s average annual maximum temperature is 15°C. Let’s compare this with some popular tourist destinations:
In Lisbon, Portugal, the average annual temperature is 21°C, offering warm summers and mild, rainy winters.
In Toronto, Canada, the average annual temperature is 13°C, with snowy winters and warm summers.
Chicago, USA, has a significant seasonal range, with an average annual temperature of 15°C.
Perth, Australia, experiences a Mediterranean climate, with a pleasant average temperature of 25°C.
How are these Temperatures Measured?
Generally, temperature data depicting climate is usually given over a 30-year average in order to reduce short-term fluctuations and reveal better long-term trends in climate conditions.
This temperature data is taken from land-based thermometers, ocean buoys, ships, and satellites. These measurements are transmitted to weather stations and climate centers around the globe where they are processed, averaged, and analyzed in order to monitor the trends and create climate models.
Global Warming and Its Effects
Climate change is affecting worldwide temperatures, including in Seaside. It has massive impacts on both local and global levels:
- Global Temperature Rise: The average global land and sea temperatures have risen by about 1.2°C since pre-industrial times.
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Local Impacts: Most regions of the world are witnessing warmer winters with fewer frost and snowfall days. The global frequency and severity of heatwaves have increased. For example, Europe's summers of 2018, 2019, and 2020 all broke records. Summers are also becoming drier; however, during winter, inland regions have experienced increased rainfall. This has caused elevated river levels and more cases of flooding.
Many countries are experiencing earlier springs and later autumns. This is why some bird species have shifted their migration dates.
For more detailed information about Seaside’s weather, including monthly rainfall, sunshine hours, and humidity levels, visit our Seaside climate page.
Current temperature in Seaside (OR)
13 m/s
broken clouds and rain
9 m/s
overcast and heavy rain
10 m/s
broken clouds and rain
