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 |
May is when Portland's tee-sheet starts to matter. After a long stretch of April rain and cool mornings, courses fill faster as the days lengthen and temperatures finally climb into the mid-60s. With an average high of 66°F and peak winds down to 9.9 mph — the third-calmest reading of the year — you'll find genuinely comfortable playing conditions, but only if you're positioned for them. The catch is that 16 precipitation days still dot the month, meaning roughly half your calendar carries some rain risk.
The 19°F daily swing between the 47°F morning low and the 66°F afternoon high is the practical detail most visitors miss. Early tee times in May can feel more like early April. Layering is non-negotiable, and afternoon windows — when temps have stabilized and dew has burned off — tend to play notably better than dawn starts.
With Portland courses transitioning from slow-season to peak demand in May, weekend tee times — especially afternoon slots in the 1–4 PM window when conditions are warmest — book out several days ahead at popular public tracks; locking in midweek afternoons is the best way to secure both favorable weather timing and open availability. Morning tee times before 8 AM remain easier to grab but carry the full brunt of that 47°F average low, so factor in the extra layer time when planning your warm-up. See how conditions rate hour by hour on our playability scale.
May sheds two rain days compared to April's 18 and warms up a full 8°F in average high, making it a meaningfully easier month to play without the full commitment to summer. June, however, drops another four rain days and adds another 8°F, so golfers who can wait will find cleaner conditions — but at the cost of heavier tee-sheet competition. May sits in between: better than April, but with more weather uncertainty than June.
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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May is workable but variable. The average high reaches 66°F and peak winds ease to 9.9 mph — the third-calmest of any month — but 16 precipitation days mean rain is a real factor on roughly half the days. Afternoon rounds in the 1–4 PM range tend to offer the most reliable window of dry, warm conditions.
Weekend afternoon slots at popular public courses can disappear three to five days out as demand picks up with the warming weather. Midweek rounds are easier to secure on shorter notice, and early-morning times (before 8 AM) generally stay open longer — though you'll be playing in near-47°F temperatures at that hour.