Why there is no recommendation here
No month at Huaraz and Cordillera Blanca clears every critical climate criterion. Rather than publish a weak score, we withhold the recommendation entirely.
Peru · Andes
No recommendation: Huaraz and Cordillera Blanca
Selected representative ERA5-Land grid cell at about 3,850 m; not a claim about every route across the region.
Plan with real conditions
Compare the hiking year
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| Month | Hiking-hour temperature | Wet days per month | Days with modelled snow | Daylight | Season guide |
|---|---|---|---|---|---|
| January | 10.6°C | ≈ 29.8 | 10.1% | 12 h 36 min | No recommendation |
| February | 10.5°C | ≈ 27.5 | 11.9% | 12 h 24 min | No recommendation |
| March | 10.5°C | ≈ 30.6 | 8.5% | 12 h 06 min | No recommendation |
| April | 10.9°C | ≈ 29 | 1.8% | 11 h 54 min | No recommendation |
| May | 11.0°C | ≈ 25.7 | 1% | 11 h 42 min | No recommendation |
| June | 10.7°C | ≈ 17.9 | 1.1% | 11 h 36 min | No recommendation |
| July | 10.8°C | ≈ 15.5 | 1.6% | 11 h 36 min | No recommendation |
| August | 11.1°C | ≈ 20.3 | 2.9% | 11 h 48 min | No recommendation |
| September | 11.0°C | ≈ 26.2 | 6.9% | 12 h 06 min | No recommendation |
| October | 10.9°C | ≈ 28.7 | 9.2% | 12 h 18 min | No recommendation |
| November | 11.1°C | ≈ 26.4 | 7% | 12 h 30 min | No recommendation |
| December | 10.8°C | ≈ 28.3 | 8.9% | 12 h 42 min | No recommendation |
What these numbers describe
Historical climate at one selected model cell. Higher routes, sheltered valleys and exposed ridges can differ substantially.
Model elevation: 3,850 m · Historical period: 1991–2025
Trail wind is not available here. This model does not resolve exposed ridges or gusts; check a local mountain forecast.
How to read these figures
Selected cell: -9.5, -77.5
Temperature sampling window (local time, limited to daylight): 08:00–18:00.
A wet day has at least 1 mm of total precipitation (including snow water equivalent). It may rain for only part of the day.
A snow day meets either model threshold: 10% snow cover or 2 cm snow depth.
Turn the climate into a trip
Choose a specific route and check its distance, ascent, difficulty, current access and forecast. These are not supplied by the climate model.
Provenance
Selected representative cell
This detail page remains available for data review and provenance. Because no month passes the recommendation gate, it makes no hiking-score or best-month claims.
-9.5, -77.5 · 3,850 m
representative3,800–3,900 m100% weight
Months we do not recommend
12 months do not clear the gate
The record for these months is complete. They carry no hiking score because at least one critical component is at or below 20, and we would rather say so here than publish a weak recommendation.
- January10.6°C96% wet dayswithheld
- February10.5°C97% wet dayswithheld
- March10.5°C99% wet dayswithheld
- April10.9°C97% wet dayswithheld
- May11.0°C83% wet dayswithheld
- June10.7°C60% wet dayswithheld
- July10.8°C50% wet dayswithheld
- August11.1°C65% wet dayswithheld
- September11.0°C87% wet dayswithheld
- October10.9°C93% wet dayswithheld
- November11.1°C88% wet dayswithheld
- December10.8°C91% wet dayswithheld
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More around Huaraz and Cordillera Blanca
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What the data still shows
The record itself is complete: 306,864 hourly values from 1991 to 2025 at -9.50, -77.50, at a model elevation of 3,850 metres. Mean monthly temperature runs from 11 to 11 degrees, and the wettest month is March at 99 percent rain days. This page stays available so the decision to withhold can be checked.
What these figures cover
Every figure comes from one selected ERA5-Land model grid cell at -9.50, -77.50, 3,850 metres, averaged over 1991 to 2025. It describes that point rather than every route in the region, and it is not a forecast. Wind is coarse 10 metre grid wind, not a statement about exposed paths or gusts.
Quick answers
Questions about Huaraz and Cordillera Blanca
- When should you hike Huaraz and Cordillera Blanca?
- We recommend no month for Huaraz and Cordillera Blanca. No month clears every critical climate criterion in the model.
- What do these figures describe?
- One selected ERA5-Land model grid cell at 3850 metres, averaged over 1991 to 2025. It is not a forecast and not a statement about individual trails.