Locarno weather in August

In August, Locarno sees average daytime highs of 20°C and overnight lows near 11°C, with 158 mm of precipitation across 13.6 wet days and about 14 hours of daylight. It is the 2nd-warmest and 5th-wettest month of the year here.

Highs ease over the month, from about 21°C in the first days to 19°C by the end. The sky is clear or mostly clear about 35% of the time in August, and the air most often feels dry.

Daylight stretches from about 14 h 42 min at the start of August to 13 h 12 min by month's end. Set against the rest of the year, August is Locarno's 6th-clearest and 9th-windiest month. For the whole year in context, see Locarno's year-round climate.

Daytime high
20°
2nd warmest
Overnight low
11°
11th coldest
Precipitation
158 mm
13.6 wet days
Daylight
14 hours
5:29 AM – 7:28 PM
Cloud cover
54%
6th clearest
Wind
4 km/h
9th windiest
Solar energy
4.93 kWh/m²
Travel score
5.9
out of 10
Air quality
Moderate
PM2.5 10.5 µg/m³ · 2020

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 21°C in the first days to 19°C by the end.

A typical August day in Locarno reaches about 20°C in the afternoon and slips back to 11°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 16°C and 24°C. Set against its neighbours, August runs on par with July and about 4°C warmer than September.

10°15°20°25°151015202531
Avg high (°C)Avg low (°C)
12112
22112
32112
42112
52112
62112
72112
82112
92111
102111
112011
122011
132011
142011
152011
162011
172011
182011
192011
202011
212011
222011
232011
241911
251910
261910
271910
281910
291910
301910
311810

How August really feels in Locarno

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.

Locarno weather by month

How August compares with the rest of the year at a glance. August is the 2nd-warmest and 5th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / -6°759.59.98.80.0
Feb / -5°638.88.9100.0
Mar / -2°9110.97.411.60.7
Apr10° / 14313.15.813.32.0
May14° / 16216.2214.73.7
Jun18° / 15515.50.515.55.2
Jul21° / 11°12814.20.215.25.9
Aug20° / 11°15813.60.1145.9
Sep16° / 17812.90.612.34.6
Oct11° / 18713.92.810.72.5
Nov / -1°17712.17.69.20.4
Dec / -5°8710.598.50.0

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 35% of the time in August.

Beyond those clear spells, partly cloudy skies cover about 22% of August, with mostly cloudy or overcast conditions the remaining 43%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15941
25842
35941
45842
55842
65842
75842
85743
95743
105743
115743
125644
135644
145644
155743
165842
175842
185842
195842
205842
215842
225842
235743
245842
255842
265743
275743
285743
295644
305644
315644

Chance of precipitation in August

Any precipitation

Locarno gets around 158 mm of rain and snow over 13.6 wet days in August. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 44% and peaks near 45% on the wettest days, and about 0 day brings snow.

0%20%40%60%151015202531
Rain chance (%)
142
242
343
443
544
644
744
845
945
1045
1145
1245
1345
1445
1545
1645
1745
1844
1944
2044
2143
2243
2343
2443
2543
2643
2743
2842
2942
3042
3142

Humidity in August

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, August lands in the dry band about 79% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
173261
272271
372271
472271
572271
673261
773261
874251
974251
1075241
1176231
1277221
1377221
1478211
1579201
1680191
1780191
1881181
1982180
2082180
2183170
2283170
2383170
2484160
2584160
2685150
2786140
2887130
2988120
3089110
3190100

Wind in August

Winds average 4 km/h in August.

Across August, daily wind ranges from about 4 km/h on the calmest days to 5 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
15calm
25calm
35calm
45calm
55calm
64calm
74calm
84calm
94calm
104calm
114calm
124calm
134calm
144calm
154calm
164calm
174calm
184calm
194calm
204calm
214calm
224calm
234calm
244calm
254calm
264calm
275calm
285calm
295calm
305calm
315calm

Sunrise & sunset in August

DaylightNight

Daylight runs from about 14 h 42 min at the start of August to 13 h 12 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 5:11 AM to 5:49 AM, and sunset from 7:51 PM to 7:01 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.75:117:51
214.65:127:50
314.65:137:48
414.55:147:47
514.55:157:46
614.55:177:44
714.45:187:43
814.45:197:41
914.35:207:40
1014.35:227:38
1114.25:237:37
1214.25:247:35
1314.15:257:33
1414.15:277:32
1514.05:287:30
1614.05:297:28
1713.95:317:27
1813.95:327:25
1913.85:337:23
2013.85:347:22
2113.75:367:20
2213.75:377:18
2313.65:387:16
2413.65:407:14
2513.55:417:12
2613.55:427:11
2713.45:447:09
2813.45:457:07
2913.35:467:05
3013.35:477:03
3113.25:497:01

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 4.93 kWh/m².

For context, solar energy here swings from a low near 1.32 kWh/m² to a high of 5.8 kWh/m² in June across the year — August's 4.93 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.4Bright
25.4Bright
35.4Bright
45.3Bright
55.3Bright
65.3Bright
75.2Bright
85.2Bright
95.2Bright
105.1Bright
115.1Bright
125.1Bright
135.0Bright
145.0Bright
155.0Bright
165.0Bright
174.9Bright
184.9Bright
194.9Bright
204.8Bright
214.8Bright
224.8Bright
234.8Bright
244.7Bright
254.7Bright
264.6Bright
274.6Bright
284.6Bright
294.5Bright
304.5Bright
314.4Bright
Planning a trip in August

Is August a good time to visit Locarno?

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

5.9
Sightseeing
1st-best month of the year
3.1
Beach & pool
2nd-best month of the year

August is a reasonable time to visit Locarno for sightseeing.

What to pack for Locarno in August

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

In August, Locarno sees daytime highs around 20°C and nights near 11°C. Worth packing: rain gear and sun protection. About 14 days see rain.

rain gearsun protection

UV index in Locarno 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 Locarno peaks around July 16 at about 8 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 21 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 16UV 8Dec 21UV 1
UV index (midday)Level
Jan1Low
Feb2Moderate
Mar4Moderate
Apr6High
May7High
Jun7Very high
Jul8Very high
Aug7Very high
Sep5Moderate
Oct3Moderate
Nov2Low
Dec1Low

Air quality in Locarno in August

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where August falls, not just the annual average.

Air quality in Locarno is worst in June — around 16 µg/m³ PM2.5 (moderate), about 2.4× the cleanest month (November, 6 µg/m³).

Seasonal pattern from CAMS reanalysis, scaled to Locarno's WHO annual average of 10.5 µg/m³.

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJun 1615 µg/m³Nov 217 µg/m³
PM2.5 (µg/m³)Level
Jan9Good
Feb9Good
Mar13Moderate
Apr14Moderate
May12Moderate
Jun16Moderate
Jul13Moderate
Aug11Good
Sep9Good
Oct8Good
Nov6Good
Dec7Good
Location & terrain

Where is Locarno?

Locarno sits at 46.2°N, 8.8°E, 206 m above sea level, in Switzerland. The nearest listed city is Bellinzona, 17 km away.

LuganoPallanza-Intra-SunaVerbaniaVareseDomodossolaMalnateComo

Topography around Locarno

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

Within 3 km, the terrain around Locarno has very significant variations in elevation — a maximum elevation change of 1,412 m around an average of 433 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 2,216 m; within 80 km, extreme variations in elevation — a maximum elevation change of 4,405 m.

The land around Locarno is covered by trees (48%) and water (31%) within 3 km, trees (72%) within 16 km, and trees (48%) and grassland (27%) within 80 km.

3 km
1,412 m
16 km
2,216 m
80 km
4,405 m
treesgrasslandcroplandartificial surfacesbare terrainsnow and icewatermoss and lichen
August weather nearby: Bellinzona 17 km · Lugano 22 km · Pallanza-Intra-Suna 31 km · Verbania 34 km · Varese 39 km · Domodossola 39 km · Malnate 42 km · Como 46 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 Locarno (46.1709°, 8.7995°, elevation 206 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. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).