Interlaken or Zermatt in July?

In July, Interlaken and Zermatt are essentially level on the overall climate score (both around 48/100). The decision comes down to the individual criteria below.

This comparison focuses on July as a representative month for the pair; for any other month, use each destination's month-by-month pages. Across the whole year Interlaken averages a climate score of 33/100, Zermatt 36/100. Both profiles below are historical monthly averages, not a forecast.

The average daily high is about 16 °C in Interlaken and 15 °C in Zermatt — warmer in Interlaken. Average daily lows are around 7 °C versus 5 °C.

On rain, Interlaken sees about 19 rainy days in July and Zermatt about 16 — drier in Zermatt. Zermatt gets more sunshine (7 vs 8 hours a day).

Over a full year Interlaken records roughly 196 rainy days and Zermatt about 167 — the drier of the two overall is Zermatt. At their sunniest, Interlaken reaches about 7 hours of sun a day (July) and Zermatt about 8 (June). If dependable dry, sunny weather is your top priority, weigh these annual totals alongside the single month above.

Climatically, Interlaken has no month that stands clearly above the rest, while Zermatt has no clear standout month. If your dates are fixed, pick the destination whose strong season overlaps them; if you are flexible, plan around these windows.

Based on the July scores for each travel style:

City breaks: Interlaken scores higher in July (Interlaken 60 vs Zermatt 59).

Active & hiking: Interlaken scores higher in July (Interlaken 62 vs Zermatt 60).

Family: Zermatt scores higher in July (Interlaken 28 vs Zermatt 30).

There is no single winner — it depends on your month and your priority. For July specifically, use the head-to-head above; over the year, Zermatt carries the slightly higher overall climate score. Choose Interlaken if its strong months and profile match your plan, Zermatt if its do. The month-by-month pages for each destination give you the full picture before you book.