December in Seattle, WA: cool / cold season for golf — expect distance loss and stiff muscles. Best tee times: midday when temperatures are warmest.
| Average December Weather | |
|---|---|
| Avg daily high | 46°F |
| Avg daily low | 38°F |
| Rainy days | 22 / mo |
| Avg peak wind | 13.4 mph |
Based on 10 years of climate data (2015–2024), December in Seattle, WA averages 46°F highs and 38°F lows. Expect about 22 days with measurable precipitation and peak winds averaging 13.4 mph. Our playability scoring treats wind under 8 mph as ideal, temperatures of 60–80°F as optimal, and rain probability below 20% as a green light — use these averages to gauge how often December hits those thresholds.
For Seattle in December, plan to midday when temperatures are warmest. Wind typically rises through the afternoon as thermal mixing builds, so earlier rounds tend to score higher on our playability scale.
Climate normals show the long-term picture, but day-to-day weather varies. Check today's live golf weather score for Seattle, WA for the current playability rating, hourly wind, temperature, and the recommended tee time window.
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