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Grandmother Mountain › Best time to climb

When to climb at Grandmother Mountain

The best months for bouldering at Grandmother Mountain are March to April and October to November: the coolest, driest spell of the year, when the rock has the best friction. On average, July to August are too wet and January is too cold.

Can you climb there today?Today's answer, hour by hour, and the week ahead.

Month by month

MonthDry daysHigh / lowRainVerdict
January18 of 312° / -7°129 mmCold
February18 of 287° / -3°90 mmGood
March20 of 3110° / -1°128 mmBest
April17 of 3014° / 4°107 mmBest
May15 of 3117° / 8°138 mmGood
June15 of 3021° / 12°88 mmGood
July12 of 3124° / 15°149 mmWet
August14 of 3122° / 13°126 mmWet
September15 of 3019° / 10°202 mmGood
October24 of 3114° / 5°46 mmBest
November23 of 309° / 0°45 mmBest
December19 of 315° / -4°125 mmGood

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Questions

When is the best time to boulder at Grandmother Mountain?

The best months for bouldering at Grandmother Mountain are March to April and October to November: the coolest, driest spell of the year, when the rock has the best friction. On average, July to August are too wet and January is too cold.

What's the weather like at Grandmother Mountain in March?

Highs around 10 °C and lows around -1 °C, with about 11 days of 1 mm of rain or more and 128 mm in all, averaged over 2023 to 2025.

Which month is wettest at Grandmother Mountain?

July, with about 19 rainy days and 149 mm on average. Most rock dries within a day after a shower, but cracks and pockets can seep for longer.