Alt Sankt Johann Temperature by Month
Alt Sankt Johann, St.Gallen Canton, Switzerland has an average annual maximum temperature of 12°C (54°F), ranging from 2°C (36°F) in January to 21°C (70°F) in July. Below you'll find a full monthly breakdown and a comparison with cities worldwide.
Alt Sankt Johann Monthly Temperatures
Visitors to Alt Sankt Johann can expect significant temperature changes throughout the year. Nighttime temperatures also vary widely, ranging from 11°C (52°F) in July to -6°C (21°F) in January.
The chart below illustrates the average maximum day and minimum night temperatures in Alt Sankt Johann by month:
Daily lows are most common between 4 AM and 6 AM. By 3 PM temperatures reach their daily high, driven by peak solar heating. July, the warmest month of the year, receives 167 hours of sunshine.
The chart below shows the average temperature throughout the year:
Temperature: Alt Sankt Johann vs Switzerland
The map below shows the annual temperature across Switzerland. You can also select individual months if you want to compare a specific time of year.
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Alt Sankt Johann vs World: Temperature Compared
Alt Sankt Johann's average annual maximum temperature is 12°C (54°F). To put that in context, here's how it compares to a few well-known destinations:
Seville, Spain averages 23°C (73°F) a year — one of the warmer cities in Western Europe, with long hot summers.
Zermatt, Switzerland averages just 4°C (39°F) annually due to its altitude, with very cold winters and cool summers even at its warmest.
New York City, USA averages 17°C (63°F) a year, with hot humid summers and cold winters that bring regular snowfall.
Perth, Australia averages 25°C (77°F) annually, with a classic Mediterranean climate — hot dry summers and mild wet winters.
What Does the Temperature Feel Like in Alt Sankt Johann?
Temperature alone doesn't tell the whole story — humidity plays a big role in how warm or cold it actually feels. High humidity in summer makes the heat feel more intense, particularly once temperatures climb above 25°C. In winter, the same humidity can make cold air feel sharper than the thermometer suggests.
In the cooler months, when temperatures drop below 10°C, high humidity makes the cold feel more cutting than it would in dry conditions.
In Alt Sankt Johann, January is the coolest month, with average highs of 2°C (36°F) and humidity around 66% — considered high. For a full picture, see our humidity page.
Climate temperature data is typically calculated as a 30-year average. This smooths out year-to-year variability and gives a more reliable picture of what a place is actually like, rather than what happened in any single unusual year.
The readings come from a range of sources — land-based weather stations, ocean buoys, ships, and satellites. That data is collected by weather services around the world, then pooled, quality-checked, and averaged to produce the climate records you see here.
Global average temperatures have risen by around 1.2°C since the pre-industrial era, and the effects are visible across many regions. Winters are milder on average, with fewer frost days and less snow in many parts of the world. Heatwaves are more frequent and more intense, and Europe's summers of 2018, 2019, and 2020 all set records.
Summers are also getting drier in some areas, while winter rainfall has increased in others. This contributies to higher river levels and more flooding. In many countries, spring arrives earlier and autumn lasts longer. It has knock-on effects for wildlife, agriculture, and local ecosystems.
For more on Alt Sankt Johann's weather — including monthly rainfall, sunshine hours, and humidity — visit our Alt Sankt Johann climate page.
