Weather in Seattle in May 2024
Average weather
Average temperature in Seattle in May
Going from a maximum of +22°C during the day to a minimum of +5°C during the night, the temperature in May averages around +16°C.
The average maximum temperature goes up 18% by the end of the month, compared with the beginning of the month, from +17°C to +20°C.
Is Seattle warm or cold in May?
Seattle is typically mild in May.
Maximum temperatures go up compared to the previous month from +14°C to +18°C. The minimum temperature also goes up from +7°C to +10°C.
Pack a light jacket as it will be warm in the day and cool in the evenings.
Take a look at how May is compared to other months in Seattle:
Climate in Seattle in May
| April | May | June | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +14°C | +18°C | +20°C | ||||
| Min. temperature | ||||||
| +1°C | +3°C | +5°C | ||||
| Max. temperature | ||||||
| +27°C | +30°C | +40°C | ||||
| Rainfall | ||||||
| 95 mm | 71 mm | 55 mm | ||||
| Wind | ||||||
| 1 m/s | 1 m/s | 1 m/s | ||||
| Humidity | ||||||
| 75% | 74% | 72% | ||||
| Air pressure | ||||||
| 1016 HPa | 1015 HPa | 1015 HPa | ||||
| Sunny days | ||||||
| 3 | 3 | 4 | ||||
| Cloudy days | ||||||
| 16 | 19 | 19 | ||||
| Rainy days | ||||||
| 11 | 9 | 7 | ||||
| Snowy days | ||||||
| 0 | 0 | 0 | ||||
May often has better weather than April. It’s getting warmer as May arrives. The average maximum temperature goes up from +14°C to +18°C during the day. As May arrives, the amount of rainfall goes down. On average, the rainfall volume decreases from 95 mm to 71 mm. It feels drier, as humidity decreases from 75% to 74%. The average wind speed doesn’t change much during May, staying around 1 m/s. The amount of sunny days stay about the same, averaging 3 sunny days during the month.
June brings much the same weather, it remains good.
Wind
The average wind speed is 2 m/s getting up to 4 m/s which is a light breeze; barely moving the tree leaves.
The average wind speed in Seattle is gradually decreasing during May, going from 2 m/s to 1 m/s over the course of the month.
Rain
How was the weather last May in Seattle?
Climate Change over Years
The climate in Seattle in May has not changed much over the last 43 years.
The average temperature was the lowest in 2011 (+16°C) and the highest in 2019 (+22°C). The driest year was 2018 with only 17 mm of rainfall, and the wettest year was 2022 with 168 mm.
FAQ
Is May a good time to visit Seattle?
Can you sunbathe in Seattle in May?
Is Seattle rainy in May?
Is it sunny in Seattle in May?
Other cities in USA
Monthly weather in Seattle
Source of the data
For this page, we’ve looked at the typical weather in Seattle, based on historical hourly weather data from January 1, 1979, to December 31, 2022.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.