Weather: Guam Marathon
Typical climate in April (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
28°C
Temperature
Range: 25°C – 31°C
82%
Humidity
High — increase hydration
63%
Rain Chance
Rain is likely — prepare gear
April
Typical race month
Usually on a Sunday
Conditions
April in Tumon is hot and humid: average highs are about 31°C and lows about 25°C, with rain on roughly 19 days of the month.
What to Wear
Light cap or visor
Shield from sun and heat
Sunscreen SPF 30+
28°C means sun exposure risk
Extra hydration plan
Increase fluid intake in heat
Hat with brim
Keep rain out of your eyes
Anti-chafe cream
Wet conditions increase chafing risk
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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