May in Portland, OR: variable for golf — mixed conditions — check the live score. Best tee times: mid-morning through early afternoon.
| Average May Weather | |
|---|---|
| Avg daily high | 66°F |
| Avg daily low | 47°F |
| Rainy days | 16 / mo |
| Avg peak wind | 9.9 mph |
Based on 10 years of climate data (2015–2024), May in Portland, OR averages 66°F highs and 47°F lows. Expect about 16 days with measurable precipitation and peak winds averaging 9.9 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 May hits those thresholds.
For Portland in May, plan to mid-morning through early afternoon. 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 Portland, OR for the current playability rating, hourly wind, temperature, and the recommended tee time window.
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