Copalis Beach (WA) Monthly Rainfall & Precipitation

This page shows both the average monthly rainfall and the number of rainy days in Copalis Beach, Washington State, United States of America. The figures are based on a 30-year period (1990–2020) to provide a reliable average. Now, let's explore all the details to give you a full picture.

Copalis Beach has a relatively rain/snowy climate with high precipitation levels, averaging 2287 mm (90 in) of rain/snowfall annually. Despite the high annual total, it does experience a distinct dry and rainy season during certain months. Examine our detailed charts below to understand these seasonal patterns.

Monthly Precipitation Levels

The average number of days each month with precipitation (> 0.2 mm (0.01 in))

The climate in Copalis Beach shows significant variation throughout the year. Expect 379 mm (15 in) of precipitation during the wettest month November, distributed over 24 rainy days.

In contrast, July offers drier and sunnier days, with around 32 mm (1.3 in) of rainfall over 9 rainy days.

November, the wettest month, has a maximum daytime temperature of 11°C (52°F). During the driest month July you can expect a temperature of 20°C (68°F). For more detailed insights into the city's temperatures, visit our Copalis Beach Temperature page.

Copalis Beach's average annual precipitation is 2287 mm (90 in). Let's compare this to some popular worldwide tourist destinations:

In Lisbon, Portugal, the average annual precipitation is 774 mm (30 in), characterized by wet winters and dry summers typical of the Mediterranean climate.

In Shanghai, China, the annual average precipitation is 1347 mm (53 in), with a humid subtropical climate.

Adelaide, Australia, enjoys 511 mm (20 in) of annual precipitation, with dry summers and wet winters.

Mumbai, India, experiences a tropical monsoon climate with 1860 mm (73 in) of annual rainfall, with the majority of precipitation happening during the monsoon season from June to September.

Precipitation amounts are measured using specific gauges installed at weather stations, collecting both rain and snow and any other type of precipitation. Rainfall is measured directly in millimeters, while that from snow and ice is obtained by melting it. Automated systems often incorporate heaters to make this easier.

Information from these stations is transmitted via Wi-Fi, satellite, GPS, or telephone connections to central monitoring networks. This information is immediately updated and integrated into weather models and forecasts.

Precipitation has a very strong role in determining the local climate and ecosystem:

• Changing Rainfall Patterns: Global warming causes drastic changes in the patterns of rainfall. Some areas have been experiencing increased frequency and intensity of rainfall, while other areas experience longer dry spells or even droughts.
• Local Impacts: Many regions are experiencing heavier rainfall in the winter months and drier, hotter summers. This affects agriculture, water resources, and ecosystems.

• Mawsynram in India is noted as being the wettest place on earth, with over 11 meters (36 feet) of rain falling every year.
• In contrast, Antofagasta in Chile is among the driest places on the planet, getting less than 0.1mm (0.004 inches) per year, with some years recording virtually no rainfall.
• Nearly 1,650 thunderstorm cells are estimated over the planet at any given time.

For more detailed information about Copalis Beach (WA)'s weather, including sunshine hours, humidity levels, and temperature data, visit our Copalis Beach (WA) Climate page.