Can I climb todayIndex › Best time to climb
When to climb at Index
The best months for bouldering at Index are May to June: the coolest, driest spell of the year, when the rock has the best friction. On average, October to April are too wet. July to August are warm: climb early or late in the day.
Can you climb there today?Today's answer, hour by hour, and the week ahead.Month by month
| Month | Dry days | High / low | Rain | Verdict |
|---|---|---|---|---|
| January | 12 of 31 | 6° / -1° | 249 mm | Wet |
| February | 9 of 28 | 6° / -1° | 269 mm | Wet |
| March | 11 of 31 | 9° / 1° | 249 mm | Wet |
| April | 11 of 30 | 12° / 2° | 184 mm | Wet |
| May | 17 of 31 | 17° / 7° | 129 mm | Best |
| June | 18 of 30 | 20° / 10° | 103 mm | Best |
| July | 28 of 31 | 25° / 13° | 31 mm | Warm |
| August | 20 of 31 | 25° / 14° | 107 mm | Warm |
| September | 20 of 30 | 22° / 12° | 92 mm | Good |
| October | 14 of 31 | 15° / 7° | 251 mm | Wet |
| November | 10 of 30 | 10° / 3° | 347 mm | Wet |
| December | 9 of 31 | 8° / 1° | 525 mm | Wet |
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When is the best time to boulder at Index?
The best months for bouldering at Index are May to June: the coolest, driest spell of the year, when the rock has the best friction. On average, October to April are too wet. July to August are warm: climb early or late in the day.
What's the weather like at Index in May?
Highs around 17 °C and lows around 7 °C, with about 14 days of 1 mm of rain or more and 129 mm in all, averaged over 2023 to 2025.
Which month is wettest at Index?
December, with about 22 rainy days and 525 mm on average. Most rock dries within a day after a shower, but cracks and pockets can seep for longer.