Olympia Weather & Climate: Best Time to Visit

Depending on the time of the year, temperatures range from very warm to moderate in Olympia. On average, daytime temperatures range from a very warm 32°C (90°F) in August to a moderate 14°C (57°F) in January.

Nighttime temperatures range from 20°C (68°F) in August to 5°C (41°F) in January.

Check out our detailed temperature page for more information.

Temperature ranges by month

Generally, Olympia has a moderate amount of precipitation, averaging 926 mm (36 in) of rainfall annually. The seasons in Olympia bring significant changes in precipitation. The wettest month, November, receives high rainfall, with an average of 135 mm (5.3 in) of precipitation. This rainfall is distributed across 12 rainy days.

In contrast, the driest month, July, experiences much less rainfall, totaling 13 mm (0.5 in) over 2 rainy days. These distinct seasonal differences provide diverse experiences throughout the year. For more details, please visit our Olympia Precipitation page.

The mean monthly precipitation over the year, including rain, hail, and snow

The average number of days each month with precipitation

In Olympia, summer days are longer and more sunny, with daily sunshine hours peaking at 11.9 hours in July. As the darker season arrives, the brightness of the sun becomes less. December sees a soft sun for only 3.6 hours per average day.

Visit our detailed sunshine hours page for more information.

Monthly hours of sunshine

Daily hours of sunshine

The relative humidity is high throughout the year in Olympia.

The city experiences its highest humidity in November, reaching 71%. In July, the humidity drops to its lowest level at 60%. What does this mean? Read our detailed page on humidity levels for further details.

Relative humidity over the year