ツェルマットの月別の天気

Zermatt's forum describes January as cold but clear — mornings well below freezing, sometimes down to -20°C, but the altitude and strong alpine sun can make it feel warmer on the mountain than the thermometer suggests. Regulars call it cheaper and less crowded than the months either side, once the New Year rush has passed.

February is the month Zermatt-forum regulars name for snow: cold enough to keep it good, with the sun high enough by now to eat outside at lunch and feel genuinely warm. The same day turns quickly when the sun goes behind cloud, the wind gets up and the freezing level drops, which is why a lightweight balaclava and liner gloves get recommended alongside the obvious kit. The crowd calendar is sharp: quiet from mid-January right up to the start of February half-term, and busy everywhere after it, because this is the height of the school-holiday season. The record: 4C days, -4.7C nights, 52.8cm of snow, 11.6 precipitation days and 7.5 hours of sun.

Zermatt-forum threads on a March visit describe the first two weeks of the month as genuinely terrific for both weather and snow, posters warning conditions get considerably sloppier in the afternoons once later in March arrives. Regulars call Gornergrat a real easy warm-up area, several posters naming Klein Matterhorn's glacier terrain and the Rothorn above Sunnega as the other two zones covered by the standard pass. Posters call lift lines genuinely short even in March, several regulars naming waits rarely exceeding four or five minutes during a busy stretch. Regulars call strong sunblock genuinely essential given the glare at altitude, several threads naming this the standard March warning regardless of how cold the air feels. Posters recommend an early-March trip if scheduling allows, several regulars calling this the more reliable window before afternoon conditions soften later. The record: 6.2C days, -3.1C nights, 116.5mm across nearly 14 days and 75 percent humidity.

Zermatt-forum threads on April skiing describe conditions as genuinely variable by week and even by time of day, posters calling a hard morning crust followed by good midday conditions then afternoon slush the standard daily pattern this late in the season. Regulars call the high glacier terrain around Klein Matterhorn and Trockener Steg reliably open through the month, while Sunnegga and Gornergrat's lower runs typically close by the third week. Posters describe some April trips as warm and nearly snow-free at village level, others cold with fresh snow overnight, both entirely plausible in the same season. Regulars recommend an early lift for the best surface, corn snow and slush increasingly likely as the day warms. Posters call late March into early April a genuine sweet spot, fewer crowds than peak winter with generally still-strong cover up high. The record: 10.7C days feeling like 9C, 0.3C nights, an extraordinarily high 145.1mm across over 14 days and 79 percent humidity.

Zermatt-forum threads on May hiking are candid: this is genuinely 'mud month' in the mountains, posters calling the snow line impossible to predict weeks out as it retreats unevenly. Regulars describe hiking above roughly two thousand meters as generally still blocked by snow, plenty of lovely lower-elevation trails opening well before the higher routes clear. Posters recommend waterproof boots regardless of forecast, trail conditions genuinely muddy as the thaw progresses. Regulars call the glacier lifts toward Klein Matterhorn still running into early May, the rest of the ski area typically closed by then. Posters describe May weather as capable of running gloriously warm and sunny or properly cold with fresh snow, both possible in the same week. Regulars recommend real layering and checking current trail status locally before a higher route. The record: 14.2C days feeling like 14C, 4.1C nights, an extraordinarily high 188.1mm across nearly 20 days and 83 percent humidity.

Forum posters describe July as genuinely variable - anywhere from an overcast, rainy day in the 60sF to a bright sunny one in the 80sF, with real potential for warm sun, heavy rain or even snow within the same week. Posters point to a consistent elevation effect: temperature drops roughly 7C per 1,000m of altitude, so with Zermatt at 1,650m and the Gornergrat lookout above 3,000m, a roughly 14C gap between the valley floor and the high viewpoint is normal - pack warm layers even on a sunny valley day if a cable car ride up is planned. Weather forecasts are only considered reliable 2-3 days out, so posters recommend planning specific hikes the day before rather than in advance. Trails around 2,000m+ are usually snow-free by early-to-mid July, though north-facing slopes and narrow valleys can hold patches of snow into August.

Zermatt-forum threads on August confirm this sits among the wetter months of the year, afternoon storms a regular feature even on an otherwise sunny day, and posters recommend an early start for any Matterhorn view or high-elevation hike specifically to beat the buildup of cloud and haze that tends to thicken as the day goes on. The Gornergrat trail is repeatedly named the standout for this month, alpine meadows in full wildflower bloom against sweeping Matterhorn views, moderate difficulty that stays accessible to most visitors. A dusting can fall at higher elevations even in August mornings, typically melting away again by afternoon rather than lingering. Regulars recommend checking a Swiss weather source before committing to a specific high route, since visibility can shift meaningfully within the same day. The record: 22.7C days feeling like 24C, 10.8C nights, an extraordinarily high 192mm across over 20 days and 76 percent humidity.

Zermatt-forum threads on September weather describe conditions as generally strong for hiking, comfortable rather than intense daytime temperatures paired with genuinely cool nights. Posters are direct September isn't really a season for accumulation down in the village itself, though the Klein Matterhorn glacier area stays snow-covered year round regardless of calendar below. Regulars call an afternoon squall entirely normal even on an otherwise favorable day, real waterproof layers standing advice. Posters recommend multiple light layers with gloves in the bag for anyone heading toward higher trails. Regulars describe the Matterhorn views as the singular draw regardless of conditions, clear mornings often more reliable than afternoon cloud. Posters call September one of the better hiking months locally. The record: 17.1C days feeling like 17C, 6.8C nights, an extraordinarily high 142mm across 18 days, a notably high 16.2cm of fresh accumulation and 82 percent humidity.