Seaview (WA) Temperature by Month

Seaview, Washington State, United States of America has an average annual maximum temperature of 14°C (57°F), with moderate seasonal shifts ranging from 9°C (48°F) in December to 19°C (66°F) in August. Below you'll find a full monthly breakdown and a comparison with cities worldwide.

The moderate changes in the climate in Seaview ensure gradual weather shifts through each season. At night, temperatures drop to between 12°C (54°F) and 3°C (37°F) depending on the time of year.

The chart below illustrates the average maximum day and minimum night temperatures in Seaview 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:

Seaview'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.

Reykjavík, Iceland averages 9°C (48°F) a year, mild summers by Icelandic standards, but cold winters and frequent wind.

Shanghai, China averages 21°C (70°F) a year, with warm summers, mild winters, and a noticeable spring and autumn.

Brisbane, Australia averages 26°C (79°F) a year, with warm winters and hot, humid summers.

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.

Seasonal temperature shifts influence more than just how warm it feels, they also drive changes in rainfall, cloud cover, and wind patterns throughout the year.

Warmer air holds more moisture, which tends to mean heavier or more frequent rain during the warmer months. When temperatures drop in winter, any precipitation that does fall is more likely to come as snow or sleet, though in Seaview this rarely lasts long on the ground.

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