Weather: Rio Half Marathon
Typical climate in August (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
23°C
Temperature
Range: 19°C – 27°C
77%
Humidity
High — increase hydration
16%
Rain Chance
Low chance of rain
August
Typical race month
Usually on a Sunday
Conditions
August in Rio is mild and fairly dry: highs average about 27°C and lows about 19°C, with around five days of 1 mm or more of rain and relative humidity near 77 percent.
What to Wear
Light cap or visor
Shield from sun and heat
Sunscreen SPF 30+
23°C means sun exposure risk
Extra hydration plan
Increase fluid intake in heat
Hydration Strategy
Before the Race
Hydrate aggressively in the 24 hours before. Aim for clear urine the morning of the race.
During the Race
Take water at every aid station. Consider sports drink for electrolytes. Don't wait until you're thirsty.
After the Race
Rehydrate within 30 minutes of finishing. A drink with electrolytes and some protein helps recovery.
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