Vashon

What is the climate like in Vashon?

The best time to visit Vashon is typically June – September, with trip comfort peaking in July (8.6/10). Vashon is warmest in August, when daily highs average 77°F (25°C), and coolest in February, when lows fall to about 39°F (4°C). The wettest month is typically December and the driest is July; the year sees roughly 48 in (1208 mm) of precipitation.

• Best time to visitJune – September — comfort peaks in July (8.6/10)
• Warmest monthAugust — average high 77°F (25°C)
• Coolest monthFebruary — average low 39°F (4°C)
• Wettest monthDecember (7.2 in (184 mm))
• Driest monthJuly (0.7 in (17 mm))
• Annual precipitation48 in (1208 mm)
• Based on2016-2025 daily ERA5 reanalysis data (10-year normals)
• Records fromKent, 17 km away (1912-2023)