Friday Harbor (WA) Rainfall & Precipitation: Monthly Averages and Year-Round Insights

This page shows the average amount of rainfall per month in Friday Harbor (WA). The numbers are calculated over a 30-year period to provide a reliable average. Let's now guide you through the details for a complete overview.

On average, Friday Harbor receives a reasonable amount of rain/snowfall, with an annual precipitation of 671 mm.

Monthly Precipitation Levels

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

Friday Harbor can be quite wet during November, receiving approximately 108 mm of precipitation over 19 rainy days.

In contrast July, experiences much drier conditions, with 14 mm of rainfall, spread across 5 rainy days.

November, the city’s wettest month, has a maximum daytime temperature of 10°C and receives 84 hours of sunshine. During the driest month July you can expect a temperature of 20°C. For more detailed insights into the city’s temperatures, visit our Friday Harbor Temperature page.

Annual Precipitation in the United States of America

The map below shows the annual precipitation across the United States of America. You can also select the different months in case you are interested in a specific month.

Amsterdam Precipitation Compared World Wide

Friday Harbor’s average annual precipitation is 671 mm. Let’s compare this to some popular worldwide tourist destinations:

In Toronto, Canada, annual precipitation averages [964 mm], with snowy winters and rainy summers.

Beijing, China, receives 560 mm of annual precipitation, concentrated in the summer months.

Perth, Australia, receives 565 mm of rainfall annually, mostly during the winter months.

Bangkok, Thailand, experiences a tropical monsoon climate with 1668 mm of annual rainfall, with the heaviest precipitation occurring during September and October.

How is Precipitation Measured?

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.

Interesting weather facts

• Mawsynram in India is noted as being the wettest place on earth, with over 11 meters of rain falling every year.
• In contrast, Antofagasta in Chile is among the driest places on the planet, getting less than 0.1mm 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 Friday Harbor (WA)’s weather, including sunshine hours, humidity levels, and temperature data, visit our Friday Harbor (WA) Climate page.