Mercer Island weather in May (Washington State, United States of America)
What does the weather outlook for Mercer Island look like in May? This guide provides the necessary weather information for your travel plans.
Temperatures
The month of May in Mercer Island typically brings pleasant temperatures and moderate rainfall. Daytime temperatures generally settle around 18°C, while nighttime can see a dip to about 9°C.
Precipitation
Mercer Island in May usually receives moderate rainfall, averaging around 56 mm for the month. Delving into the climate records from the past 30 years, one can predict that nearly 12 days of the month will see rainfall.Average sunshine
The city usually sees around 254 hours of sunlight, indicating many sunny days.If you prefer dry days with pleasant temperatures, June, July, August and September typically offer the best circumstances. While January, February, March, November and December tend to showcase 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 May
Min Temperature
9°C
Max Temperature
18°C
Chance of Rain
40%
Precipitation
56 mm
Rainy days
12 days
Humidity
68% *
Windspeed
14 km/h *
Sunshine
254 hours *
Percentage Sunshine
54% *
Where to go in the United States of America in May
Find out more about the weather in the United States of America and which places have the best travel conditions in this month.
perfect weather
pleasant
tolerable
unpleasant
poor
So, what should you wear in this month?
For visitors traveling to Mercer Island, we recommend wearing layers. So maybe a skirt, t-shirt, shorts for during the day and jeans and a warm jacket for some days and evenings. Bring a rain jacket in case it rains during your stay. Plan on layering your clothes.What To Do
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Interested in more climate information?
This site 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 travel conditions. Find out where to go with our weather planner.
