Playability Score: 100/100 — Elite
Current conditions: 76°F, wind 4 mph, 0% chance of rain.
Updated July 30, 2026
Portland golf contends with Pacific Northwest rain from October through May but enjoys dry, mild summers. June through September delivers reliable playing conditions. Wind off the Columbia Gorge can be a factor on exposed courses.
Portland's daily temperature swings are the most underrated club-selection factor on local courses. In August, when the average high hits 85°F but the low drops to 59°F, a morning tee time at 7 a.m. plays 20-plus degrees cooler than an afternoon round — your ball flight, distance, and layering choices all shift meaningfully between those windows. December, by contrast, has a swing of just 9°F, so at least you know what you're getting: cold, damp, and consistent.
That summer swing matters for ball flight in particular. Cold morning air is denser, costing you yards; by afternoon the warmth thins the air and distances normalize. Portland's summers — July averaging just 3 precip days — give you plenty of chances to experience both ends of that range in the same week. The site's playability scores reflect these hourly shifts, which is exactly why checking the morning versus afternoon forecast here isn't optional.
April and May average 18 and 16 precip days respectively, so expect interrupted rounds rather than wash-outs. Highs reach 58°F in April and 66°F in May, but lows stay in the 40s — that daily swing means a 7 a.m. start requires a real jacket that you'll want to shed by the back nine. Winds ease gradually from 10.4 mph in April to 9.9 mph in May, staying just above the 8 mph calm threshold most days.
July delivers just 3 precip days and August only 5 — the clearest stretch in Portland's golf calendar. Peak winds hold steady around 10 mph all summer, but the 26°F daily swing in August means a morning round at 59°F feels nothing like a 3 p.m. tee time at 85°F. Book afternoon slots for maximum distance; book mornings for cooler comfort and lighter crowds.
September is the calmest month of the year at 9.5 mph average peak wind, and with only 9 precip days it remains a strong window. October slides back toward 14 precip days and cooler highs of 64°F, though the daily range shrinks compared to summer, making dress planning more straightforward. By November the count climbs to 20 precip days and highs average just 51°F — conditions deteriorate quickly.
January and December each log 23 precip days — the wettest months on the calendar — and January's average peak wind of 13.1 mph is the highest of the year. Highs hover around 46–47°F with lows in the mid-30s; February's average low of 35°F is the coldest reading in the data set. The silver lining is a compressed 9°F daily swing in December, so at least conditions stay predictably grim rather than swinging on you mid-round.
July and August combine the fewest precip days (3 and 5) with the warmest afternoon highs (84°F and 85°F), making them the most reliable months for uninterrupted golf. September extends the window with a drop to just 9 precip days and the year's calmest average peak wind at 9.5 mph. All three months keep peak winds in the 9–10 mph range, right at the edge of the site's calm threshold.
July is the driest month by a wide margin, averaging just 3 precip days. August is close behind at 5 precip days. Both months also see average peak winds around 10 mph, keeping conditions manageable even on exposed layouts.
In August, the average daily swing is 26°F — from a low of 59°F up to a high of 85°F. A morning tee time and a late-afternoon finish on the same day can feel like two different seasons in terms of what to wear and how far the ball flies. Checking hourly conditions rather than a single daily forecast makes a real difference here.
October marks the turn, jumping from September's 9 precip days to 14 in October, then 20 in November and 23 by December. Rounds from October onward increasingly contend with wet fairways and soft greens. If you're visiting and want to avoid rain-disrupted play, September is the last reliably dry month.