Monthly weather forecast and climate
Des Moines, WA

Average sea temperature - Des Moines, WA

The best month for swimming (with the highest average sea temperature) is August (53.7°F).
The coldest month (with the lowest average sea temperature) is February (45.8°F).

Average daylight - Des Moines, WA

The month with the longest days is June (Average daylight: 15.9h).
The month with shortest days is December (Average daylight: 8.5h).

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