Wil weather in August

In August, Wil sees average daytime highs of 23°C and overnight lows near 15°C, with 129 mm of rain across 14 wet days and about 14.1 hours of daylight. It is the 2nd-warmest and 3rd-wettest month of the year here.

Highs ease over the month, from about 24°C in the first days to 21°C by the end. The sky is clear or mostly clear about 33% of the time in August, and the air most often feels comfortable.

Daylight stretches from about 14 h 48 min at the start of August to 13 h 18 min by month's end. Set against the rest of the year, August is Wil's 2nd-clearest and 12th-windiest month. For the whole year in context, see Wil's year-round climate.

Daytime high
23°
2nd warmest
Overnight low
15°
11th coldest
Rainfall
129 mm
14 wet days
Daylight
14 h 06 min
5:26 AM – 7:30 PM
Cloud cover
55%
2nd clearest
Wind
6 km/h
12th windiest
Solar energy
4.83 kWh/m²
Travel score
6.3
out of 10

Wil is city and municipality in the canton of St. Gallen, Switzerland.

Density
1,151/km²
people per km²

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in August

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 24°C in the first days to 21°C by the end.

A typical August day in Wil reaches about 23°C in the afternoon and slips back to 15°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 17°C and 29°C. Set against its neighbours, August runs on par with July and about 4°C warmer than September.

10°15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
12416
22416
32416
42416
52416
62416
72416
82416
92416
102416
112316
122316
132316
142316
152315
162315
172315
182315
192315
202315
212315
222315
232215
242215
252215
262214
272214
282214
292114
302114
312114

How August really feels in Wil

Once humidity and wind are folded in, August averages 0 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

Days feeling ≥ 32°C
0
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

August sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Wil weather by month

How August compares with the rest of the year at a glance. August is the 2nd-warmest and 3rd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / -1°8212.56.58.70.0
Feb / -1°7311.36.59.90.2
Mar10° / 8813.94.611.61.9
Apr14° / 9013.21.813.33.6
May18° / 10°13115.60.214.95.0
Jun21° / 14°13215.1015.75.8
Jul23° / 15°12814.8015.46.3
Aug23° / 15°12914014.16.3
Sep18° / 12°10612.1012.45.6
Oct14° / 9111.70.410.63.7
Nov / 9512.33.29.11.2
Dec / 98146.48.30.0

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 33% of the time in August.

Beyond those clear spells, partly cloudy skies cover about 21% of August, with mostly cloudy or overcast conditions the remaining 45%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15743
25743
35743
45743
55644
65644
75644
85545
95545
105545
115545
125545
135545
145545
155545
165644
175644
185644
195644
205545
215545
225545
235446
245446
255446
265248
275248
285149
295149
305050
315050

Chance of precipitation in August

Any precipitation

Wil gets around 129 mm of rain over 14 wet days in August. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 45% and peaks near 47% on the wettest days.

0%20%40%60%151015202531
Rain chance (%)
146
246
346
446
546
647
747
847
947
1047
1147
1247
1346
1446
1545
1644
1744
1843
1943
2043
2142
2242
2342
2443
2543
2643
2744
2844
2944
3044
3144

Humidity in August

DryComfortableHumidMuggyOppressiveMiserable

Most of August feels comfortable — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, August lands in the comfortable band about 37% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
12039392
22039392
32039382
42039383
52139383
62139373
72239372
82338362
92438362
102538352
112538342
122638332
132738322
142839312
152939312
162939302
173039292
183138292
193138292
203238282
213337282
223437282
233536272
243636272
253835262
263934251
274134241
284333231
294432231
304632221
314831200

Wind in August

Winds average 6 km/h in August, the calmest month.

Across August, daily wind ranges from about 6 km/h on the calmest days to 6 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
16calm
26calm
36calm
46calm
56calm
66calm
76calm
86calm
96calm
106calm
116calm
126calm
136calm
146calm
156calm
166calm
176calm
186calm
196calm
206calm
216calm
226calm
236calm
246calm
256calm
266calm
276calm
286calm
296calm
306calm
316calm

Sunrise & sunset in August

DaylightNight

Daylight runs from about 14 h 48 min at the start of August to 13 h 18 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 90 minutes over August. Sunrise moves from 5:06 AM to 5:46 AM, and sunset from 7:54 PM to 7:02 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.85:067:54
214.85:077:53
314.75:087:51
414.75:107:50
514.65:117:48
614.65:127:47
714.55:137:45
814.55:157:44
914.45:167:42
1014.45:177:40
1114.35:197:39
1214.35:207:37
1314.25:217:36
1414.25:237:34
1514.15:247:32
1614.15:267:30
1714.05:277:29
1814.05:287:27
1913.95:307:25
2013.95:317:23
2113.85:327:21
2213.85:347:19
2313.75:357:17
2413.75:367:16
2513.65:387:14
2613.55:397:12
2713.55:417:10
2813.45:427:08
2913.45:437:06
3013.35:457:04
3113.35:467:02

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 4.83 kWh/m².

For context, solar energy here swings from a low near 1.02 kWh/m² to a high of 5.58 kWh/m² in June across the year — August's 4.83 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.3Bright
25.3Bright
35.2Bright
45.2Bright
55.2Bright
65.1Bright
75.1Bright
85.1Bright
95.0Bright
105.0Bright
115.0Bright
125.0Bright
135.0Bright
144.9Bright
154.9Bright
164.9Bright
174.8Bright
184.8Bright
194.8Bright
204.8Bright
214.7Bright
224.7Bright
234.6Bright
244.6Bright
254.5Bright
264.5Bright
274.4Bright
284.4Bright
294.3Bright
304.3Bright
314.2Bright
Planning a trip in August

Is August a good time to visit Wil?

Our two travel scores rate August for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

6.3
Sightseeing
1st-best month of the year
4.8
Beach & pool
2nd-best month of the year

August is a reasonable time to visit Wil for sightseeing.

What to pack for Wil in August

From August's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In August, Wil sees daytime highs around 23°C and nights near 15°C. Pack rain gear. Worth having: light clothes and sun protection. About 14 days see rain.

rain gearlight clothessun protection

UV index in Wil in August

LowModerateHighVery highExtreme

Clear-sky midday UV in August peaks around 7 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Wil peaks around July 15 at about 8 (very high) — sunscreen and a hat are worth it in the middle of the day. It bottoms out near December 22 at about 1 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 8 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highHighModerateLowJul 15UV 8Dec 22UV 1
UV index (midday)Level
Jan1Low
Feb2Low
Mar4Moderate
Apr5Moderate
May7High
Jun7Very high
Jul8Very high
Aug7High
Sep4Moderate
Oct3Moderate
Nov2Low
Dec1Low
Location & terrain

Where is Wil?

Wil sits at 47.5°N, 9.0°E, 569 m above sea level, in Switzerland. The nearest listed city is Frauenfeld, 15 km away.

HerisauSeen (Kreis 3)Oberwinterthur (Kreis 2)KreuzlingenWetzikonKonstanz

Topography around Wil

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Wil.

Within 3 km, the terrain around Wil has only modest variations in elevation — a maximum elevation change of 232 m around an average of 584 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 887 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,278 m.

The land around Wil is covered by grassland (38%) and trees (35%) within 3 km, trees (42%) and grassland (40%) within 16 km, and trees (43%) and grassland (34%) within 80 km.

3 km
232 m
16 km
887 m
80 km
3,278 m
treesgrasslandcroplandartificial surfacesbare terrainwater
August weather nearby: Frauenfeld 15 km · Gossau 17 km · Herisau 19 km · Seen (Kreis 3) 21 km · Oberwinterthur (Kreis 2) 22 km · Kreuzlingen 23 km · Wetzikon 24 km · Konstanz 24 km

Switzerland travel facts

Travel advisory
Level 1
Exercise Normal Precautions
Power plugs
Type C / J
230 V · 50 Hz
Prices
≈ 112% of US
price level, 2025
GDP per capita
$114,769
2025
Happiness
7.0 / 10
World Happiness, 2025
Safe drinking water
97%
of population, 2024
Homicide rate
0.6
per 100k, 2023
Road deaths
2.2
per 100k/yr, 2019
Income group
High
World Bank
English
High
EF EPI 564
Religion
Roman Catholic 34%none 29%Protestant 23%other Christian 6%

Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.

Data sources

Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Wil (47.4615°, 9.0455°, elevation 569 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).