St.Gallen Canton Weather in September

Average temperatures, rainfall, sunshine and the best places to visit in St.Gallen Canton, Switzerland in September.

Are you planning a trip a to St.Gallen Canton, Switzerland in September and wondering what kind of weather to expect? This page has all the details you need.

What to Expect in St.Gallen Canton in September

St.Gallen Canton, Switzerland is a region in Switzerland. September in St.Gallen Canton generally has temperatures that range from mild to pleasant, with precipitation levels ranging from high to heavy.

Temperatures

Based on our climate data spanning from 1990-2020, the average maximum temperature is mild in Bad Ragaz at 16°C (61°F) to pleasant in Wil at 20°C (68°F). Nighttime temperatures generally drop to 11°C (52°F) in Wil and 6°C (43°F) in Bad Ragaz.

For specific regional insights in St.Gallen Canton, Switzerland, refer to the map provided below.

Precipitation

In September, precipitation varies across different areas. From high rainfall in Wil with an average of 125 mm (4.9 in) to heavy rainfall in Unterterzen with 192 mm (7.6 in).

Average sunshine

Most areas see decent amounts of sunshine this month. Bad Ragaz gets around 145 hours of sunlight, providing a pleasant balance of sun and clouds. If you'd prefer more guaranteed sunshine, our weather planner can show you sunnier spots around the world.

Explore St.Gallen Canton by month

Pick a month to see the average temperature, rainfall and sunshine in St.Gallen Canton - and find the best time to visit. (based on Bad Ragaz)

Best Places to Visit in St.Gallen Canton in September

Click on a destination dot for more details. Toggle the map to compare temperatures or precipitation across St.Gallen Canton.

perfect weather
pleasant
tolerable
unpleasant
poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).

Popular Destinations in St.Gallen Canton

What is the weather like in September for some of the most popular destinations in St.Gallen Canton, Switzerland?

Temperature range in St.Gallen Canton (September)

Precipitation variation in St.Gallen Canton (September)

Bad Ragaz

In September Bad Ragaz generally has moderate temperatures with maximum daytime temperatures around 16°C (61°F), minimum nighttime temperatures around 6°C (43°F) and heavy monthly rainfall. So on average the conditions are mixed that month.

August
September
October
Max temperature
20°C (68°F)
16°C (61°F)
12°C (54°F)
Min temperature
9°C (48°F)
6°C (43°F)
2°C (36°F)
Monthly sun hours
175 hours
145 hours
115 hours
Monthly rainfall
226 mm (8.9 in)
170 mm (6.7 in)
131 mm (5.2 in)
Monthly rainy days
19 days
14 days
13 days
Weather conditions

Amden

In September Amden generally has moderate temperatures with maximum daytime temperatures around 17°C (63°F), minimum nighttime temperatures around 7°C (45°F) and heavy monthly rainfall. So on average the conditions are less favorable that month.

August
September
October
Max temperature
21°C (70°F)
17°C (63°F)
13°C (55°F)
Min temperature
11°C (52°F)
7°C (45°F)
4°C (39°F)
Monthly sun hours
170 hours
157 hours
160 hours
Monthly rainfall
257 mm (10 in)
184 mm (7.2 in)
135 mm (5.3 in)
Monthly rainy days
19 days
14 days
13 days
Weather conditions

Unterwasser

In September Unterwasser generally has moderate temperatures with maximum daytime temperatures around 17°C (63°F), minimum nighttime temperatures around 8°C (46°F) and heavy monthly rainfall. So on average the conditions are less favorable that month.

August
September
October
Max temperature
21°C (70°F)
17°C (63°F)
13°C (55°F)
Min temperature
11°C (52°F)
8°C (46°F)
4°C (39°F)
Monthly sun hours
170 hours
157 hours
160 hours
Monthly rainfall
258 mm (10 in)
182 mm (7.2 in)
134 mm (5.3 in)
Monthly rainy days
19 days
14 days
13 days
Weather conditions

Wildhaus

In September Wildhaus generally has moderate temperatures with maximum daytime temperatures around 17°C (63°F), minimum nighttime temperatures around 8°C (46°F) and heavy monthly rainfall. So on average the conditions are mixed that month.

August
September
October
Max temperature
21°C (70°F)
17°C (63°F)
13°C (55°F)
Min temperature
11°C (52°F)
8°C (46°F)
4°C (39°F)
Monthly sun hours
170 hours
157 hours
160 hours
Monthly rainfall
251 mm (9.9 in)
178 mm (7 in)
132 mm (5.2 in)
Monthly rainy days
18 days
14 days
13 days
Weather conditions

Alt Sankt Johann

In September Alt Sankt Johann generally has moderate temperatures with maximum daytime temperatures around 17°C (63°F), minimum nighttime temperatures around 8°C (46°F) and heavy monthly rainfall. So on average the conditions are less favorable that month.

August
September
October
Max temperature
21°C (70°F)
17°C (63°F)
13°C (55°F)
Min temperature
11°C (52°F)
8°C (46°F)
4°C (39°F)
Monthly sun hours
170 hours
157 hours
160 hours
Monthly rainfall
262 mm (10 in)
185 mm (7.3 in)
135 mm (5.3 in)
Monthly rainy days
19 days
14 days
13 days
Weather conditions

Is your destination not in the list? Have a look at all destinations in St.Gallen Canton, in Switzerland.

Popular cities in September

Day & night temperatures, rainfall and average weather in St.Gallen Canton in September.

City Weather Day temp Night temp Rainfall
Bad Ragaz 16°C (61°F) 6°C (43°F) 170 mm (6.7 in)
Amden 17°C (63°F) 7°C (45°F) 184 mm (7.2 in)
Unterwasser 17°C (63°F) 8°C (46°F) 182 mm (7.2 in)
Wildhaus 17°C (63°F) 8°C (46°F) 178 mm (7 in)
Alt Sankt Johann 17°C (63°F) 8°C (46°F) 185 mm (7.3 in)
Sevelen 17°C (63°F) 7°C (45°F) 168 mm (6.6 in)

St.Gallen Canton weather in September: frequently asked questions

What is the weather like in St.Gallen Canton, Switzerland in September?

St.Gallen Canton, Switzerland typically experiences mixed weather in September, part of the season. Daytime highs in Bad Ragaz average around 16°C (61°F), and temperatures drop to about 6°C (43°F) at night.

What is the average temperature in St.Gallen Canton, Switzerland in September?

Daytime temperatures in Bad Ragaz peak at roughly 16°C (61°F) in September, dropping to about 6°C (43°F) overnight.

Does St.Gallen Canton, Switzerland get a lot of rain in September?

Expect plenty of rainfall. Bad Ragaz records an average of 170 mm (6.7 in) in September, putting it among the wetter months for St.Gallen Canton, Switzerland.

Is September a Good Time to Visit St.Gallen Canton, Switzerland?

In our opinion, September is one of the best times to visit St.Gallen Canton, Switzerland, but the weather is often mixed in Bad Ragaz.

Generally speaking, the best visiting conditions can be found in July, August and September offering mostly mixed weather in Bad Ragaz.

Interested in more climate information?

We have much more information about the climate in St.Gallen Canton.

Weather and climate has detailed information for every country in the world. Are you going to Switzerland? Get detailed historical weather averages for many cities in Switzerland.

Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal travel conditions. Find out where to go with our weather planner.

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