Weather: Polar Night Half Marathon
Typical climate in January (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
-3°C
Temperature
Range: -5°C – -1°C
75%
Humidity
Moderate
50%
Rain Chance
Rain is likely — prepare gear
January
Typical race month
Usually on a Saturday
Conditions
Early January in Tromsø is cold: daily highs average about -1°C and lows about -5°C, with precipitation on around fifteen days of the month.
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
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
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.
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