Arlon weather in August

In August, Arlon sees average daytime highs of 22°C and overnight lows near 13°C, with 77 mm of rain across 12.4 wet days and about 14.2 hours of daylight. It is the 2nd-warmest and 3rd-wettest month of the year here.

Highs ease over the month, from about 23°C in the first days to 20°C by the end. The sky is clear or mostly clear about 21% of the time in August, and the air most often feels dry.

Daylight stretches from about 15 hours at the start of August to 13 h 24 min by month's end. Set against the rest of the year, August is Arlon's 1st-clearest and 12th-windiest month. For the whole year in context, see Arlon's year-round climate.

Daytime high
22°
2nd warmest
Overnight low
13°
11th coldest
Rainfall
77 mm
12.4 wet days
Daylight
14 h 18 min
5:33 AM – 7:48 PM
Cloud cover
63%
1st clearest
Wind
11 km/h
12th windiest
Solar energy
4.61 kWh/m²
Travel score
6.2
out of 10

Arlon is town in Arlon municipality, Belgium.

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 23°C in the first days to 20°C by the end.

A typical August day in Arlon reaches about 22°C in the afternoon and slips back to 13°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 17°C and 27°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)
12314
22314
32314
42314
52314
62313
72213
82213
92213
102213
112213
122213
132213
142213
152213
162213
172213
182113
192113
202113
212112
222112
232112
242112
252112
262012
272012
282012
292012
302011
312011

How August really feels in Arlon

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.

Arlon 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°8212.748.40.0
Feb / -1°6811.14.69.80.1
Mar / 7112.62.211.51.6
Apr13° / 6312.10.613.43.3
May17° / 7613.9015.14.7
Jun20° / 11°7612.20165.7
Jul22° / 13°7612.9015.76.2
Aug22° / 13°7712.4014.26.2
Sep18° / 10°6910.5012.45.4
Oct13° / 7411.70.110.53.3
Nov / 7512.81.58.80.9
Dec / 98144.280.0

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 21% of the time in August, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 19% of August, with mostly cloudy or overcast conditions the remaining 60%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14555
24357
34357
44456
54258
64258
74159
84159
94159
104060
114060
123961
134060
144060
154060
164060
174060
183961
193961
203862
213862
223862
233961
243961
253961
263862
273862
283862
293763
303763
313763

Chance of precipitation in August

Any precipitation

Arlon gets around 77 mm of rain over 12.4 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 40% and peaks near 41% on the wettest days.

0%10%20%30%40%50%151015202531
Rain chance (%)
140
240
340
440
540
640
740
840
940
1041
1141
1241
1341
1441
1541
1641
1741
1841
1941
2040
2140
2240
2340
2440
2539
2639
2738
2838
2938
3037
3137

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 55% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
1493813
2493913
3493912
4493912
5493911
6494011
7504011
8504010
9504010
10504010
11504010
1252399
1352399
1453389
15523810
16533710
17533710
18543610
19553510
20563410
21573310
22583210
23593110
24603010
25612910
2663289
2764279
2866268
2966268
3068257
3169256

Wind in August

Winds average 11 km/h in August, the calmest month.

Across August, daily wind ranges from about 11 km/h on the calmest days to 12 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
111calm
211calm
311calm
411calm
511calm
611calm
711calm
811calm
911calm
1011calm
1111calm
1211calm
1311calm
1411calm
1511calm
1611calm
1712calm
1812calm
1912calm
2012calm
2112calm
2212calm
2312calm
2412calm
2512calm
2612calm
2712calm
2812light breeze
2912light breeze
3012light breeze
3112light breeze

Sunrise & sunset in August

DaylightNight

Daylight runs from about 15 hours at the start of August to 13 h 24 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 96 minutes over August. Sunrise moves from 5:11 AM to 5:56 AM, and sunset from 8:14 PM to 7:18 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
115.05:118:14
215.05:138:13
314.95:148:11
414.95:168:10
514.85:178:08
614.85:198:06
714.75:208:05
814.75:218:03
914.65:238:01
1014.65:247:59
1114.55:267:58
1214.55:277:56
1314.45:297:54
1414.45:307:52
1514.35:327:50
1614.35:337:48
1714.25:357:47
1814.15:367:45
1914.15:387:43
2014.05:397:41
2114.05:417:39
2213.95:427:37
2313.85:447:35
2413.85:457:33
2513.75:477:30
2613.75:487:28
2713.65:507:26
2813.55:517:24
2913.55:537:22
3013.45:547:20
3113.45:567:18

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 4.61 kWh/m².

For context, solar energy here swings from a low near 0.66 kWh/m² to a high of 5.46 kWh/m² in June across the year — August's 4.61 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.2Bright
25.1Bright
35.1Bright
45.1Bright
55.0Bright
65.0Bright
75.0Bright
84.9Bright
94.9Bright
104.9Bright
114.8Bright
124.8Bright
134.8Bright
144.7Bright
154.7Bright
164.6Bright
174.6Bright
184.5Bright
194.5Bright
204.4Bright
214.4Bright
224.3Bright
234.3Bright
244.2Bright
254.2Bright
264.1Bright
274.1Bright
284.0Bright
294.0Moderate
303.9Moderate
313.9Moderate
Planning a trip in August

Is August a good time to visit Arlon?

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

6.2
Sightseeing
1st-best month of the year
4.0
Beach & pool
2nd-best month of the year

August is a reasonable time to visit Arlon for sightseeing.

What to pack for Arlon in August

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

In August, Arlon sees daytime highs around 22°C and nights near 13°C. Worth packing: rain gear and sun protection. About 12 days see rain.

rain gearsun protection

UV index in Arlon in August

LowModerateHighVery highExtreme

Clear-sky midday UV in August peaks around 6 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Arlon peaks around July 16 at about 7 (very high) — sunscreen and a hat are worth it in the middle of the day. It bottoms out near January 1 at about 1 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 7 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highHighModerateLowJul 16UV 7Jan 1UV 1
UV index (midday)Level
Jan1Low
Feb1Low
Mar3Moderate
Apr5Moderate
May6High
Jun7High
Jul7Very high
Aug6High
Sep4Moderate
Oct3Moderate
Nov1Low
Dec1Low

Air quality in Arlon 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 Arlon is worst in April — around 16 µg/m³ PM2.5 (moderate), about 1.8× the cleanest month (December, 9 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodApr 1516 µg/m³Dec 109 µg/m³
PM2.5 (µg/m³)Level
Jan11Good
Feb11Good
Mar15Moderate
Apr16Moderate
May14Moderate
Jun14Moderate
Jul12Moderate
Aug12Moderate
Sep12Moderate
Oct10Good
Nov9Good
Dec9Good
Location & terrain

Where is Arlon?

Arlon sits at 49.7°N, 5.8°E, 421 m above sea level, in Belgium. The nearest listed city is Esch-sur-Alzette, 24 km away.

Esch-sur-AlzetteLuxembourgDudelangeThionvilleYutzKonz

Topography around Arlon

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

Within 3 km, the terrain around Arlon has only modest variations in elevation — a maximum elevation change of 176 m around an average of 382 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 288 m; within 80 km, large variations in elevation — a maximum elevation change of 613 m.

The land around Arlon is covered by trees (40%) and grassland (30%) within 3 km, trees (46%) and grassland (34%) within 16 km, and trees (49%), grassland (25%) and cropland (22%) within 80 km.

3 km
176 m
16 km
288 m
80 km
613 m
treesgrasslandcroplandartificial surfaces
August weather nearby: Esch-sur-Alzette 24 km · Luxembourg 24 km · Dudelange 30 km · Hayange 43 km · Thionville 44 km · Yutz 45 km · Konz 55 km · Trier 60 km

Belgium travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type C / E
230 V · 50 Hz
Prices
≈ 81% of US
price level, 2025
GDP per capita
$60,750
2025
Happiness
6.9 / 10
World Happiness, 2025
Safe drinking water
100%
of population, 2024
Homicide rate
1.1
per 100k, 2021
Road deaths
5.8
per 100k/yr, 2019
Income group
High
World Bank
English
Very high
EF EPI 608
Religion
Roman Catholic 57%nonbeliever/agnostic 20%atheist 9%Muslim 7%

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 Arlon (49.6833°, 5.8167°, elevation 421 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).