Weather: Portland Half Marathon
Typical climate in October (an estimate, not measured race-day data). Use it to plan your race strategy, clothing, and hydration.
Typical climate for the race month — an estimate, not a forecast or a race-day record
13°C
Temperature
Range: 8°C – 18°C
78%
Humidity
High — increase hydration
44%
Rain Chance
Possible — check forecast
October
Typical race month
Usually on a Sunday
Conditions
Early October in Portland is mild and damp: highs average about 18°C and lows about 8°C, with measurable rain on around thirteen days of the month.
What to Wear
Singlet or short sleeve
Ideal racing temperatures
Hat with brim
Keep rain out of your eyes
Anti-chafe cream
Wet conditions increase chafing risk
Hydration Strategy
Before the Race
Normal hydration. Drink to thirst in the 24 hours before. Avoid over-hydrating.
During the Race
Drink at aid stations every 3-4km. Alternate water and sports drink.
After the Race
Rehydrate within 30 minutes of finishing. A drink with electrolytes and some protein helps recovery.
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