Cool
Average highs are around 18°C, so pack for cooler days.
Weather Guide
Olympic National Park, United States Average Monthly Weather
Weather score15Poor annual avg
Best months: July, August, June
Across the year, average daytime temperatures are around 10°C, sunshine averages 4.8h per day, and rainfall totals about 2974mm. Sea temperatures average 11°C across the year.
Annual weather
Annual averages
Temp
10°C
Rain
2974mm
Annual total
Sun
4.8h
Sea
11°C
Weather score
15
Poor avg
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Drier
Rainfall averages 80mm, which is relatively low for holiday planning.
Some sun
Sunshine averages 7.3h per day, enough for a balanced month.
Cool sea
Sea temperatures average 14°C, so the water can feel cool.
Map
Weather map
Compare Olympic National Park, United States with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
August18°C average high
August is one of Olympic National Park's hottest months, so shade and slower afternoons matter.
Warmest monthsJuly to September
This stretch sets the upper range for average daytime heat.
Rain
August80mm average rain
August is one of Olympic National Park's driest months, making outdoor days easier to plan than in wetter parts of the year.
Driest monthsApril to September
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
August7.3 hours average sun
August is brighter than Olympic National Park's yearly average, though the strongest sunshine usually sits closer to the peak months.
Brightest monthsMay to August
This stretch has the strongest sunshine in the monthly averages.
Sea temperature
August14°C average sea
August is one of Olympic National Park's warmest sea months, when swimming comfort is usually strongest.
Warmest seaJune to October
Sea temperatures are usually near 13°C in this stretch, so swimming comfort is at its strongest.
Weather score
August37 weather score
August is one of Olympic National Park's best weather-score months, combining the strongest overall balance in the yearly averages.
Best weather monthsJuly to August
These months have the strongest weather score in the monthly averages.
Hotels near Olympic National Park, United States
Marriott
Fairfield Inn & Suites Seattle PoulsboPoulsbo, Washington, USA
Fairfield Inn & Suites Seattle BremertonBremerton, Washington, USA
TownePlace Suites by Marriott OlympiaOlympia, Washington, USA
Courtyard OlympiaOlympia, Washington, USA
Courtyard Seattle NorthgateSeattle, Washington, USA
TownePlace Suites by Marriott TumwaterTumwater, Washington, USA