Switzerland
Zermatt in August: weather & travel advice
This month's data profile
Rain shapes the decision
Zermatt in August is climatically mixed. The average daily high is around 15 °C. With about 15 rainy days it is wet.
Historical monthly averages, not a weather forecast. Individual days and years can differ substantially.
Rank among 12 monthly averages
50/100 · #1
Warmth
#2
Dryness
#9
Sun
#3
Published best categories: City break, Active
Zermatt · AugustPhoto: flamouroux · CC BY-SA 2.0Climate facts
- Average high
- 15 °C
- Average low
- 5 °C
- Rainy days (est.)
- 15 rainy days (est.)
- Sun (est.)
- 7 h/day
- Humidity
- 74 %
Climate evidence with direct month comparison
The highlighted row is the selected month. Precipitation total and rainy days are separate monthly averages.
| Month | Avg high °C | Avg low °C | Rainy days (est.) | Precipitation mm | Sun h/day (est.) | Humidity % | Wind m/s | Score |
|---|---|---|---|---|---|---|---|---|
| July | 15 | 5 | 16 | 92 | 7.5 | 74 | 1.5 | 48 |
| August (selected) | 15 | 5 | 15 | 89 | 6.5 | 74 | 1.4 | 50 |
| September | 11 | 1 | 14 | 81 | 5.0 | 78 | 1.4 | 40 |
How do the previous and next months compare?
Baseline: August (50/100)
Positive and negative values show the change from the selected month.
| Score Δ | Average high Δ | Average low Δ | Rainy days Δ | Rain Δ | Sun Δ | Humidity Δ | Wind Δ | |
|---|---|---|---|---|---|---|---|---|
| July | -2 | ±0 °C | -0.1 °C | +0.9 | +2.8 mm | +1 h | ±0 % | +0.1 m/s |
| September | -10 | -3.8 °C | -3.5 °C | -0.8 | -7.7 mm | -1.5 h | +3.7 % | ±0 m/s |
All twelve months in context
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Useful next decisions
Frequently asked questions
How warm is Zermatt in August?
The average daily high is around 15 °C, with an average daily low of about 5 °C.
Does it rain a lot in Zermatt in August?
The curated estimate is about 15 rainy days per month, not a directly measured long-term average. Total precipitation averages around 89 mm for the month. A rainy day does not mean all-day rain.
When is the best time to visit Zermatt?
No month in Zermatt reaches the threshold for a clear recommendation in the climate score; the month comparison above shows the differences.