Haaltert weather in August

In August, Haaltert sees average daytime highs of 22°C and overnight lows near 14°C, with 74 mm of rain across 12 wet days and about 14.3 hours of daylight. It is the 2nd-warmest and 1st-wettest month of the year here.

Highs ease over the month, from about 23°C in the first days to 21°C by the end. The sky is clear or mostly clear about 16% of the time in August, and the air most often feels comfortable.

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

Daytime high
22°
2nd warmest
Overnight low
14°
11th coldest
Rainfall
74 mm
12 wet days
Daylight
14 h 24 min
5:37 AM – 7:59 PM
Cloud cover
65%
1st clearest
Wind
12 km/h
12th windiest
Solar energy
4.44 kWh/m²
Travel score
6.3
out of 10

Haaltert is town in Haaltert 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 21°C by the end.

A typical August day in Haaltert reaches about 22°C in the afternoon and slips back to 14°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 18°C and 28°C. Set against its neighbours, August runs on par with July and about 3°C warmer than September.

10°15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
12315
22315
32315
42315
52315
62315
72315
82315
92315
102314
112314
122314
132314
142314
152314
162314
172214
182214
192214
202214
212214
222214
232214
242214
252214
262113
272113
282113
292113
302113
312113

How August really feels in Haaltert

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.

Haaltert weather by month

How August compares with the rest of the year at a glance. August is the 2nd-warmest and 1st-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / 6211.918.20.5
Feb / 54111.39.70.8
Mar10° / 5311.20.811.52.4
Apr14° / 4811.9013.53.9
May18° / 6011.9015.35.3
Jun20° / 12°6311.1016.26.0
Jul23° / 14°7012.3015.86.3
Aug22° / 14°7412014.36.3
Sep19° / 12°5510.9012.45.8
Oct15° / 5811.2010.44.2
Nov10° / 6211.70.38.72.0
Dec / 7112.81.17.80.7

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 16% of the time in August, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 22% of August, with mostly cloudy or overcast conditions the remaining 62%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14357
24357
34258
44258
54258
64258
74258
84258
94060
104060
114060
123961
133961
143961
153763
163763
173763
183664
193664
203664
213664
223664
233664
243565
253565
263565
273565
283565
293565
303565
313466

Chance of precipitation in August

Any precipitation

Haaltert gets around 74 mm of rain over 12 wet days in August, the wettest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 38% and peaks near 40% on the wettest days.

0%10%20%30%40%50%151015202531
Rain chance (%)
137
237
337
437
537
637
737
838
938
1039
1139
1239
1340
1440
1540
1640
1740
1840
1940
2040
2140
2240
2340
2439
2539
2638
2738
2837
2937
3036
3136

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 42% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
13145222
23145222
33145222
43245222
53245212
63245212
73245212
83345212
93345202
103345202
113344202
123344202
133444202
143444202
153444192
163543193
173543193
183643192
193643182
203743182
213842172
224041162
234141162
244340152
254539142
264737142
274936132
285035132
295235121
305434111
315533111

Wind in August

Winds average 12 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
612calm
712calm
812calm
912calm
1012calm
1112calm
1212calm
1312calm
1412calm
1512calm
1612calm
1712calm
1812calm
1912calm
2012light breeze
2112light breeze
2212light breeze
2312light breeze
2412light breeze
2512light breeze
2612light breeze
2712light breeze
2812light breeze
2912light breeze
3012light breeze
3112light breeze

Sunrise & sunset in August

DaylightNight

Daylight runs from about 15 h 12 min 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 108 minutes over August. Sunrise moves from 5:14 AM to 6:01 AM, and sunset from 8:26 PM to 7:27 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
115.25:148:26
215.15:168:24
315.15:178:22
415.05:198:21
515.05:208:19
614.95:228:17
714.95:238:16
814.85:258:14
914.85:268:12
1014.75:288:10
1114.65:308:08
1214.65:318:07
1314.55:338:05
1414.55:348:03
1514.45:368:01
1614.45:377:59
1714.35:397:57
1814.25:417:55
1914.25:427:53
2014.15:447:51
2114.15:457:49
2214.05:477:46
2313.95:487:44
2413.95:507:42
2513.85:527:40
2613.75:537:38
2713.75:557:36
2813.65:567:33
2913.65:587:31
3013.56:007:29
3113.46:017:27

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 4.44 kWh/m².

For context, solar energy here swings from a low near 0.64 kWh/m² to a high of 5.34 kWh/m² in June across the year — August's 4.44 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.0Bright
25.0Bright
35.0Bright
44.9Bright
54.9Bright
64.9Bright
74.8Bright
84.8Bright
94.8Bright
104.7Bright
114.7Bright
124.6Bright
134.6Bright
144.5Bright
154.5Bright
164.5Bright
174.4Bright
184.4Bright
194.3Bright
204.3Bright
214.2Bright
224.2Bright
234.1Bright
244.1Bright
254.0Bright
264.0Moderate
273.9Moderate
283.9Moderate
293.8Moderate
303.8Moderate
313.8Moderate
Planning a trip in August

Is August a good time to visit Haaltert?

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
4.6
Beach & pool
2nd-best month of the year

August is a reasonable time to visit Haaltert for sightseeing.

What to pack for Haaltert in August

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

In August, Haaltert sees daytime highs around 22°C and nights near 14°C. Worth packing: light clothes and rain gear. About 12 days see rain.

light clothesrain gear

Sea temperature near Haaltert in August

The nearest coast averages about 19°C in August — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 68 km away) is warmest in August at about 19°C and coldest in February near 6°C.

The water stays below 20°C all year — cool enough that most swimmers want a wetsuit.

5°10°15°20°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshing
Sea temperature (°C)Comfort
Jan6Bracing
Feb6Bracing
Mar6Bracing
Apr9Bracing
May12Bracing
Jun16Cool
Jul18Cool
Aug19Cool
Sep18Cool
Oct15Bracing
Nov11Bracing
Dec8Bracing

UV index in Haaltert 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 Haaltert peaks around June 23 at about 6 (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 6 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighModerateLowJun 23UV 6Dec 22UV 1
UV index (midday)Level
Jan1Low
Feb1Low
Mar3Moderate
Apr4Moderate
May6High
Jun6High
Jul6High
Aug6High
Sep4Moderate
Oct2Moderate
Nov1Low
Dec1Low

Air quality in Haaltert 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 Haaltert is worst in April — around 17 µg/m³ PM2.5 (moderate), and holds fairly steady the rest of the year.

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

01020JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodApr 1317 µg/m³Dec 1511 µg/m³
PM2.5 (µg/m³)Level
Jan12Moderate
Feb13Moderate
Mar17Moderate
Apr17Moderate
May16Moderate
Jun15Moderate
Jul13Moderate
Aug15Moderate
Sep14Moderate
Oct12Moderate
Nov12Good
Dec11Good
Location & terrain

Where is Haaltert?

Haaltert sits at 50.9°N, 4.0°E, 43 m above sea level, in Belgium. The nearest listed city is Aalst, 4.0 km away.

Topography around Haaltert

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

Within 3 km, the terrain around Haaltert has only modest variations in elevation — a maximum elevation change of 58 m around an average of 34 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 124 m; within 80 km, significant variations in elevation — a maximum elevation change of 406 m.

The land around Haaltert is covered by grassland (36%), trees (27%) and artificial surfaces (20%) within 3 km, grassland (35%), trees (25%) and cropland (25%) within 16 km, and cropland (38%), grassland (23%) and trees (22%) within 80 km.

3 km
58 m
16 km
124 m
80 km
406 m
treesgrasslandcroplandartificial surfaceswater
August weather nearby: Aalst 4.0 km · Denderleeuw 6.0 km · Lede 7.0 km · Herzele 8.0 km · Ninove 9.0 km · Wetteren 14 km · Asse 14 km · Zottegem 14 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 Haaltert (50.9063°, 4.0009°, elevation 43 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. Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. 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).