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Saint Gallen (Sankt Gallen)
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Switzerland weather

Weather in Saint Gallen for May 2026

Your guide to Saint Gallen weather in May - trends and predictions

    Snow Forecast ❄️

  • Snowfall in Saint Gallen during May is quite rare, with fewer than 2 snowy days on average.
    According to Saint Gallen snow forecast for May 2026, 1 snowy day is expected in the next 2 weeks at Tuesday, 12 May.

    • Temperatures

  • So far, May 2026 in Saint Gallen is slightly warmer than the historical average by 1.3 °C.

  • Expect cooler weather in the next days in Saint Gallen with the forecast suggesting a temperature of 11.6 °C, lower than the historical average.

  • In general, the average temperature in Saint Gallen at the beginning of May is 15.6 °C. As the month progressed, temperatures tended to noticeably warm up, reaching an average of 18.1 °C by the end of May.

    • Rain 🌧️

  • Saint Gallen experiences heavy rainfall in May, with over 20 rainy days and an average total precipitation 184.5 mm.

Average dry days
0
Dry days
Average rainy days
31
Rainy days
Average snowy days
0
Snow days
Average temperatures
16°/7°
Temperatures
Average wind speed
12 km/h
Avg max wind
Average humidity
80 %
Avg humidity

Saint Gallen Weather May

Move between months or click on a day
April
June
Mon.Tue.Wed.Thu.Fri.Sat.Sun.
1
Moderate or heavy rain shower
17°
2
Sunny
17°
3
Cloudy
17°
4
Partly cloudy
17°
5
Patchy rain possible
14°
6
Light rain shower
14°
7
Patchy rain possible
13°
8
Moderate or heavy rain shower
13°
9
Patchy rain possible
19°
10
Moderate rain
17°
11
Moderate rain
17°
12
Heavy rain
11°
13
Overcast
14°
14
Patchy rain possible
7°
15
Patchy rain possible
10°
16
Moderate rain
6°
17
Patchy rain possible
13°
18
Moderate rain
14°
19
Patchy rain possible
9°
20
Patchy rain possible
8°
21
Patchy rain possible
9°
22
Moderate rain
9°
23
Moderate or heavy rain shower
14°
24
Patchy rain possible
14°
25
Cloudy
17°
26
Light rain shower
18°
27
Cloudy
18°
28
Partly cloudy
19°
29
Overcast
19°
30
Patchy rain possible
18°
31
Cloudy
18°

Temperatures trend during May in Saint Gallen

See the weather trend as well as the moving average line

May weather in Saint Gallen day by day

Click on a date for more information
April June
Date Weather Temperatures Rain Snow More
1 May Moderate or heavy rain shower
Moderate or heavy rain shower
 17° /6° 2.1 mm 0 cm
2 May Sunny
Sunny
 17° /7° 3.5 mm 0 cm
3 May Cloudy
Cloudy
 17° /7° 3 mm 0 cm
4 May Partly cloudy
Partly cloudy
 17° /7° 7.8 mm 0 cm
5 May Patchy rain possible
Patchy rain possible
 14° /7° 7.1 mm 0 cm
6 May Light rain shower
Light rain shower
 14° /7° 6 mm 0 cm
7 May Patchy rain possible
Patchy rain possible
 13° /6° 4.8 mm 0 cm
8 May Moderate or heavy rain shower
Moderate or heavy rain shower
 13° /6° 9 mm 0 cm
9 May Patchy rain possible
Patchy rain possible
 19° /7° 1 mm 0 cm
10 May Moderate rain
Moderate rain
 17° /8° 12.1 mm 0 cm
11 May Moderate rain
Moderate rain
 17° /8° 10.2 mm 0 cm
12 May Heavy rain
Heavy rain
 11° /3° 23 mm 1.8 cm
13 May Overcast
Overcast
 14° /0° 0 mm 0 cm
14 May Patchy rain possible
Patchy rain possible
 7° /6° 3.3 mm 0 cm
15 May Patchy rain possible
Patchy rain possible
 10° /5° 1 mm 0 cm
16 May Moderate rain
Moderate rain
 6° /5° 6 mm 0 cm
17 May Patchy rain possible
Patchy rain possible
 13° /4° 0.1 mm 0 cm
18 May Moderate rain
Moderate rain
 14° /4° 5.9 mm 0 cm
19 May Patchy rain possible
Patchy rain possible
 9° /5° 2.9 mm 0 cm
20 May Patchy rain possible
Patchy rain possible
 8° /6° 2.2 mm 0 cm
21 May Patchy rain possible
Patchy rain possible
 9° /7° 3 mm 0 cm
22 May Moderate rain
Moderate rain
 9° /7° 6.8 mm 0 cm
23 May Moderate or heavy rain shower
Moderate or heavy rain shower
 14° /8° 4.6 mm 0 cm
24 May Patchy rain possible
Patchy rain possible
 14° /6° 3.9 mm 0 cm
25 May Cloudy
Cloudy
 17° /7° 4.6 mm 0 cm
26 May Light rain shower
Light rain shower
 18° /9° 5.7 mm 0 cm
27 May Cloudy
Cloudy
 18° /9° 5.6 mm 0 cm
28 May Partly cloudy
Partly cloudy
 19° /9° 6.5 mm 0 cm
29 May Overcast
Overcast
 19° /8° 2.3 mm 0 cm
30 May Patchy rain possible
Patchy rain possible
 18° /9° 11.6 mm 0 cm
31 May Cloudy
Cloudy
 18° /9° 10 mm 0 cm
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Important Notice
Our weather forecast for Saint Gallen in May is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Saint Gallen forecast closer to your planned date for the most up-to-date weather information.
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Saint Gallen in May - FAQ

What are the expected maximum and minimum temperatures in Saint Gallen during May?

Enjoy moderate daytime temperatures of up to 16° and cooler nights around 7°. Ideal for a range of outdoor activities, from hiking to city tours.

How much rainfall should be expected in Saint Gallen during May?

Significant rainfall exceeding 184.5 mm is expected in Saint Gallen during May, occurring over more than 31 days. Preparing for wet conditions is recommended in your planning.

What are the typical wind conditions in Saint Gallen during May?

The average wind speed in Saint Gallen during May is 12 km/h, suggesting breezy to windy conditions, depending on your activities.

Saint Gallen snow forecast May 2026

Track daily snowfall levels and discover Saint Gallen’s snowy potential this May ❄️

May rainfall patterns in Saint Gallen

Explore the daily rainfall trends and prepare for Saint Gallens May weather 💧
Typically, Saint Gallen has 31 rainy days in May with a total of 184.5 mm of rainfall.
Provinces in Saint Gallen
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Wahlkreis St. Gallen
Top locations in Saint Gallen
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Sankt Gallen
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Location coordinates Where is Saint Gallen?

Get accurate weather forecasts for Saint Gallen, located at latitude 47.424 and longitude 9.375. Stay updated with localized weather information tailored for Saint Gallen.

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