อากาศซัลทซ์บวร์ค เดือนธันวาคม

Forum posters describe December as cold with a chance of snow, though they're quick to note heavy snowfall itself is considered unusual for the city center - Salzburg sits in a relatively flat spot outside the surrounding mountains, distinct from the ski resorts nearby, so the white-Christmas expectation doesn't always hold in town even in a snowy winter. Layers you can peel off indoors are the standard packing advice. The Christmas market is the highlight regardless of snow: one big market spanning two central squares plus several smaller ones scattered through town, with the Hellbrunn palace advent market (a short bus ride out) singled out as worth the trip, and mulled punsch or gluehwein recommended for warming up between stalls.

Regulars name the city's own local term, Schnuerlregen or string rain, for the specific way rain here tends to fall - steady rather than heavy, with sunny breaks often opening between showers rather than a full day lost to it. Our row backs that mild, genuinely wet read, 19.6C over 8.5C nights feeling 7C, with a substantial 139.9mm of rain across 14.5 days and a trace of very late snow, 3cm, in the surrounding Alps. Regulars are consistent that the long, settled rainy stretches the city used to be known for have grown rarer in recent years, so even a rain-heavy forecast still leaves a real chance of catching the Salzkammergut lakes in sun. A proper rain layer over warm clothing remains the standard packing advice regardless. The record: humidity 81 percent, 10 hours of sun, a 9.4 kph wind and AQI 40.

August here belongs to the Festival, and the board's warning is unusually blunt: peak season, prices high, and even locals keep out of the old town through July and August. Their consolation is real though - a good number of the Festival's concerts are free, so the month is not only for people holding a five-hundred-euro ticket. On weather they promise nothing, listing sun, heat, thunderstorms, rain and a cool spell as equally likely, and our row leans wet: 182mm across 14.3 days at 82.8 percent humidity, which is a lot of water for a month people book a year ahead. Air is 25.8C reading as 27C over 14.8C nights, under a still 8.4 kph wind. The record: 10.1 hours of sun and AQI 37.

Regulars give the geography before the forecast: this city sits on the north side of the Alps and takes more rain than most of central Europe. Our row bears it out at 177.6mm across 16.8 days, which is a lot for a month they still describe as normally hot with good days. Their honest version is that the year varies - hot and humid in one, 15C with autumn rainfall in another - so July here is a range rather than a promise. Our average reads 25.6C over 14.9C with 11.2 hours of sun. The month is also the peak of the season with schools out, and the festival opens on the last weekend of July, so the busiest days sit at the end. The record: humidity 81 percent, an 8.9 kph wind and AQI 41.

September in Salzburg is a good month and, regulars insist, a lottery: anywhere from balmy to chilly and wet, with the standing line that the weather never behaves like the statistics. Being on the north side of the Alps, the city takes more precipitation than most of central Europe, which our row puts at 124.6mm across 10.9 days at 85 percent humidity, under a 20.9C day. They add a useful modern caveat - the long rainy spells Salzburg was once famous for have become rare - and a hard limit on planning: any Alpine forecast beyond four or five days is a dice roll. Our row also carries 4cm of September snow, which is the mountains in the grid square rather than the streets. The record: 10.5C nights and 8.5 hours of sun.