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Sankt Gallen
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Switzerland weather

Weather in Sankt Gallen for May 2026

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

    Temperatures

  • The forecast for the first days of May 2026 in Sankt Gallen predicts temperatures to be around 17 °C, close to the historical average.

  • In general, the average temperature in Sankt Gallen at the beginning of May is 18.3 °C. As the month progressed, temperatures tended to slightly decrease, reaching an average of 18.1 °C by the end of May.

    • Rain 🌧️

  • Sankt 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

Sankt Gallen Weather May

Move between months or click on a day
April
June
Mon.Tue.Wed.Thu.Fri.Sat.Sun.
1
Sunny
17°
2
Patchy rain possible
20°
3
Patchy rain possible
19°
4
Patchy rain possible
18°
5
Patchy rain possible
20°
6
Patchy rain possible
16°
7
Sunny
18°
8
Patchy rain possible
20°
9
Patchy rain possible
19°
10
Patchy rain possible
14°
11
Patchy rain possible
17°
12
Moderate rain
8°
13
Moderate rain at times
15°
14
Patchy rain possible
17°
15
Light rain shower
16°
16
Moderate or heavy rain shower
13°
17
Patchy rain possible
13°
18
Partly cloudy
16°
19
Patchy rain possible
18°
20
Patchy light rain with thunder
19°
21
Light rain shower
16°
22
Light rain shower
15°
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 Sankt Gallen

See the weather trend as well as the moving average line

May weather in Sankt Gallen day by day

Click on a date for more information
April June
Date Weather Temperatures Rain UV More
1 May Sunny
Sunny
 17° /3° 0 mm 5.9
2 May Patchy rain possible
Patchy rain possible
 20° /8° 3.1 mm 5.8
3 May Patchy rain possible
Patchy rain possible
 19° /10° 1.7 mm 5.2
4 May Patchy rain possible
Patchy rain possible
 18° /11° 1.6 mm 3
5 May Patchy rain possible
Patchy rain possible
 20° /11° 4.7 mm 3
6 May Patchy rain possible
Patchy rain possible
 16° /11° 2.6 mm 3
7 May Sunny
Sunny
 18° /10° 0.1 mm 4
8 May Patchy rain possible
Patchy rain possible
 20° /9° 0.2 mm 3
9 May Patchy rain possible
Patchy rain possible
 19° /8° 1.7 mm 3
10 May Patchy rain possible
Patchy rain possible
 14° /5° 2 mm 2
11 May Patchy rain possible
Patchy rain possible
 17° /8° 0.8 mm 3
12 May Moderate rain
Moderate rain
 8° /5° 10.3 mm 2
13 May Moderate rain at times
Moderate rain at times
 15° /7° 2.1 mm 4
14 May Patchy rain possible
Patchy rain possible
 17° /6° 3.2 mm 4
15 May Light rain shower
Light rain shower
 16° /7° 6.4 mm 4
16 May Moderate or heavy rain shower
Moderate or heavy rain shower
 13° /5° 13.3 mm 4
17 May Patchy rain possible
Patchy rain possible
 13° /5° 8.8 mm 3
18 May Partly cloudy
Partly cloudy
 16° /5° 5.1 mm 4
19 May Patchy rain possible
Patchy rain possible
 18° /6° 1.3 mm 4
20 May Patchy light rain with thunder
Patchy light rain with thunder
 19° /8° 3.8 mm 4
21 May Light rain shower
Light rain shower
 16° /8° 9.1 mm 4
22 May Light rain shower
Light rain shower
 15° /8° 6.5 mm 4
23 May Moderate or heavy rain shower
Moderate or heavy rain shower
 14° /8° 4.6 mm 3
24 May Patchy rain possible
Patchy rain possible
 14° /6° 3.9 mm 3
25 May Cloudy
Cloudy
 17° /7° 4.6 mm 4
26 May Light rain shower
Light rain shower
 18° /9° 5.7 mm 4
27 May Cloudy
Cloudy
 18° /9° 5.6 mm 4
28 May Partly cloudy
Partly cloudy
 19° /9° 6.5 mm 5
29 May Overcast
Overcast
 19° /8° 2.3 mm 4
30 May Patchy rain possible
Patchy rain possible
 18° /9° 11.6 mm 4
31 May Cloudy
Cloudy
 18° /9° 10 mm 4
Next
Important Notice
Our weather forecast for Sankt 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 Sankt Gallen forecast closer to your planned date for the most up-to-date weather information.
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Sankt Gallen in May - FAQ

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

Significant rainfall exceeding 184.5 mm is expected in Sankt 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 Sankt Gallen during May?

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

May rainfall patterns in Sankt Gallen

Explore the daily rainfall trends and prepare for Sankt Gallens May weather 💧
Typically, Sankt Gallen has 31 rainy days in May with a total of 184.5 mm of rainfall.

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Location coordinates Where is Sankt Gallen?

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

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