Weather: Mt. Fuji Marathon
Typical climate in December (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
2°C
Temperature
Range: -3°C – 8°C
66%
Humidity
Moderate
17%
Rain Chance
Low chance of rain
December
Typical race month
Usually on a Sunday
Conditions
December at Lake Kawaguchi is cold: average highs are around 8°C and lows around -3°C, with relative humidity near 66% and rain or snow on about five days of the month. The 9:00 am start is typically close to freezing.
What to Wear
Gloves & hat
Essential for freezing starts
Thermal base layer
Retain body heat in cold wind
Disposable outer layer
Stay warm pre-race, toss at the start
Hydration Strategy
Before the Race
Normal hydration. Drink to thirst in the 24 hours before. Avoid over-hydrating.
During the Race
You'll sweat less in the cold but still need fluids. Take small sips at aid stations.
After the Race
Rehydrate within 30 minutes of finishing. A drink with electrolytes and some protein helps recovery.
Get Your Training Plan
Free, personalized for this race
Get alerts for Mt. Fuji Marathon
Registration openings, date changes, sell-out warnings.