Mercer Island weather in August (Washington State, United States of America)
Planning a trip to Mercer Island in August? Here's what the weather might have in store during this month.
In Mercer Island the weather in August is generally perfect, characterized by high temperatures and low rainfall. August falls within the summer season. Throughout the daytime, temperatures often hover around 25°C. However, as the sun sets and evening approaches, there's a noticeable cool-down, with temperatures gently dropping to a more temperate 14°C. On average, it is the warmest month of the year. So be prepared and pack summer clothes. Embrace the warmth, but always stay equipped with your summer essentials to make the most of this toasty month.
Mercer Island in August usually receives low rainfall, averaging around 25 mm for the month. Rain is expected on roughly 5 days.
With around 280 hours of sunshine, the days are mostly sunny. It gives a pleasant and vibrant feel to the area.
So this is a great month to visit if you prefer dry days with pleasant temperatures. June, July, August and September typically offer the most optimal weather. In contrast, January, February, March, November and December tend to have less optimal conditions.
For an in-depth look at the yearly conditions, visit our specialized Mercer Island climate page with graphs.
Mercer Island, monthly averages in August
Min Temperature
14°C
Max Temperature
25°C
Chance of Rain
17%
Precipitation
25 mm
Rainy days
5 days
Humidity
68% *
Windspeed
14 km/h *
Sunshine
280 hours *
Percentage Sunshine
64% *
Where to go in the United States of America in August
Find out more about the weather in the United States of America in August and which places have the best weather conditions in this month.
perfect weather
pleasant
tolerable
unpleasant
poor
So, what should you wear in Mercer Island in August?
It's going to be warm! Consider airy clothing, t-shirts, and other summer clothes. Shorts for men made of cotton or linen are good options for staying cool.What To Do
We rated the following activities from 1 (least suitable) to 10 (best) to do in August.
Interested in more climate information?
Weather and Climate provides you with all the information you need about the climate in Mercer Island.
Our site offers climate and forecast data for every country in the world. Are you going to the United States of America? On this website you can find historical weather averages for many cities in the United States of America. Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal climate conditions. Find out where to go with our weather planner.
