Seattle weather in June
Temperature, sea and sunshine in June: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in June
Excellent
Best time to visit: July – September
What is the weather like in Seattle in June?
In June, Seattle is mild: daytime highs average 20 °C, and nights cool down to about 11 °C. The sea averages 10.7 °C – swimming is only for the hardy. The sun shines for around 8 hours a day. Rain is frequent, with about 11 rainy days and 68 mm in total. All in all, June is an excellent month for a holiday in Seattle.
June compared
How the weather changes from May to July. Tap a month to open it.
More details for June
- Daylight
- 15 h 57 min05:11 – 21:08
- UV index
- 8 · very highclear sky, noon (estimate)All months
- Muggy days
- 0 daysdew point 18 °C or moreAll months
- Wind
- 13 km/haverage daily peakAll months
- Cloud cover
- 61 %on averageAll months
- Hot days
- 1 day30 °C or moreAll months
- Snow days
- 0 days1 cm or more of fresh snowAll months
- Time zone
- UTC−7America/Los_Angeles
How the score comes together
- Temperatureweight 50 %100 %
- Sunshineweight 20 %75 %
- Few rainy daysweight 30 %52 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in June
- Sunscreen
- Sunglasses & sun hat
- A jumper for the evenings
- Rain jacket or umbrella
Seattle in June: quick answers
Is Seattle hot in June?
No. In June, Seattle is mild: daytime highs average 20 °C and nights drop to about 11 °C.
Can you swim in Seattle in June?
Only if you don't mind cold water: in June the sea averages just 10.7 °C. Comfortable swimming temperatures are not reached at any time of year.
Does it rain much in Seattle in June?
Rain is frequent, with about 11 rainy days and 68 mm in total.
Seattle month by month
The whole year in SeattleAll destinations: USAWhere to go in JuneSea temperature in June
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences