Ostend weather in August

In August, Ostend sees average daytime highs of 20°C and overnight lows near 16°C, with 80 mm of rain across 12 wet days and about 14.4 hours of daylight. It is the 1st-warmest and 4th-wettest month of the year here.

Day-to-day highs hold fairly steady near 20°C through the month. The sky is clear or mostly clear about 24% 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 Ostend's 2nd-clearest and 11th-windiest month. For the whole year in context, see Ostend's year-round climate.

Daytime high
20°
1st warmest
Overnight low
16°
12th coldest
Rainfall
80 mm
12 wet days
Daylight
14 h 24 min
5:41 AM – 8:04 PM
Cloud cover
59%
2nd clearest
Wind
18 km/h
11th windiest
Solar energy
4.72 kWh/m²
Travel score
6.0
out of 10

Ostend is city in Ostend 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

Day-to-day highs hold fairly steady near 20°C through the month.

A typical August day in Ostend reaches about 20°C in the afternoon and slips back to 16°C overnight — a 4°C spread between the day's warmth and the night's chill. On most days the high lands between 17°C and 23°C. Set against its neighbours, August runs on par with July and about 2°C warmer than September.

10°15°20°25°151015202531
Avg high (°C)Avg low (°C)
12017
22017
32017
42017
52017
62017
72017
82017
92017
102017
112017
122017
132016
142016
152016
162016
172016
182016
192016
202016
212016
222016
232016
242016
252016
262016
271916
281916
291916
301916
311915

How August really feels in Ostend

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.

Ostend weather by month

How August compares with the rest of the year at a glance. August is the 1st-warmest and 4th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / 7313.90.88.20.7
Feb / 6011.41.19.60.7
Mar / 5511.40.511.51.6
Apr11° / 4610.4013.52.8
May14° / 11°5710.9015.34.2
Jun17° / 14°6010.5016.35.4
Jul20° / 16°7012015.96.0
Aug20° / 16°8012014.46.0
Sep18° / 14°7812012.45.4
Oct15° / 11°9214010.43.8
Nov11° / 9515.40.28.72.1
Dec / 9314.90.77.71.0

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 24% of the time in August.

Beyond those clear spells, partly cloudy skies cover about 24% of August, with mostly cloudy or overcast conditions the remaining 52%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15248
25248
35149
45149
55050
65050
75050
84951
94852
104852
114852
124852
134951
144852
154852
164753
174753
184852
194852
204852
214753
224753
234753
244753
254753
264753
274753
284654
294654
304555
314654

Chance of precipitation in August

Any precipitation

Ostend gets around 80 mm of rain over 12 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 39% and peaks near 41% on the wettest days.

0%10%20%30%40%50%151015202531
Rain chance (%)
135
235
336
436
536
636
737
837
938
1038
1139
1239
1340
1440
1540
1640
1741
1841
1941
2041
2141
2241
2340
2440
2540
2640
2740
2840
2940
3040
3140

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 46% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
11850284
21851274
31851274
41950274
51950274
62049274
72049274
82148274
92148274
102248265
112247265
122247265
132346265
142346265
152446265
162446265
172446254
182546254
192646254
202646244
212746243
222846233
233045223
243145212
253344212
263544202
273643192
283842182
294041181
304141171
314340171

Wind in August

Winds average 18 km/h in August.

Across August, daily wind ranges from about 17 km/h on the calmest days to 20 km/h at its breeziest. It stays fairly steady from day to day.

0510152025151015202531
Wind speed (km/h)Feels
117light breeze
217light breeze
317light breeze
417light breeze
517light breeze
618light breeze
718light breeze
818light breeze
918light breeze
1018light breeze
1118light breeze
1218light breeze
1318light breeze
1418light breeze
1518light breeze
1618light breeze
1718light breeze
1818light breeze
1919light breeze
2019light breeze
2119light breeze
2219light breeze
2319light breeze
2419light breeze
2519light breeze
2619light breeze
2719light breeze
2819light breeze
2919light breeze
3020light breeze
3120light 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 5:18 AM to 6:05 AM, and sunset from 8:31 PM to 7:32 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
115.25:188:31
215.25:198:30
315.15:218:28
415.15:228:26
515.05:248:25
615.05:258:23
714.95:278:21
814.85:288:19
914.85:308:17
1014.75:318:16
1114.75:338:14
1214.65:358:12
1314.65:368:10
1414.55:388:08
1514.45:398:06
1614.45:418:04
1714.35:428:02
1814.35:448:00
1914.25:467:58
2014.15:477:56
2114.15:497:54
2214.05:517:51
2314.05:527:49
2413.95:547:47
2513.85:557:45
2613.85:577:43
2713.75:597:41
2813.66:007:38
2913.66:027:36
3013.56:037:34
3113.46:057:32

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 4.72 kWh/m².

For context, solar energy here swings from a low near 0.65 kWh/m² to a high of 5.72 kWh/m² in June across the year — August's 4.72 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.4Bright
25.3Bright
35.3Bright
45.3Bright
55.2Bright
65.2Bright
75.1Bright
85.1Bright
95.0Bright
105.0Bright
115.0Bright
124.9Bright
134.9Bright
144.8Bright
154.8Bright
164.7Bright
174.7Bright
184.6Bright
194.6Bright
204.5Bright
214.5Bright
224.4Bright
234.4Bright
244.3Bright
254.3Bright
264.2Bright
274.2Bright
284.1Bright
294.1Bright
304.0Bright
314.0Moderate
Planning a trip in August

Is August a good time to visit Ostend?

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

6.0
Sightseeing
1st-best month of the year
3.1
Beach & pool
1st-best month of the year

August is a reasonable time to visit Ostend for sightseeing.

What to pack for Ostend in August

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

In August, Ostend sees daytime highs around 20°C and nights near 16°C. Worth packing: rain gear and sun protection. About 12 days see rain.

rain gearsun protection

Sea temperature near Ostend 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 18 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
Jan7Bracing
Feb6Bracing
Mar7Bracing
Apr9Bracing
May12Bracing
Jun15Bracing
Jul17Cool
Aug19Cool
Sep18Cool
Oct15Bracing
Nov12Bracing
Dec9Bracing

UV index in Ostend 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 Ostend peaks around June 22 at about 6 (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 6 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighModerateLowJun 22UV 6Jan 1UV 1
UV index (midday)Level
Jan1Low
Feb1Low
Mar3Moderate
Apr4Moderate
May6High
Jun6High
Jul6High
Aug6High
Sep4Moderate
Oct2Moderate
Nov1Low
Dec1Low
Location & terrain

Where is Ostend?

Ostend sits at 51.2°N, 2.9°E, 6 m above sea level, in Belgium. The nearest listed city is Middelkerke, 8.0 km away.

ZedelgemSint-AndriesBlankenbergeTorhoutBrugesDiksmuideOostkamp

Topography around Ostend

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

Within 3 km, the terrain around Ostend has only modest variations in elevation — a maximum elevation change of 25 m around an average of 3 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 49 m; within 80 km, significant variations in elevation — a maximum elevation change of 318 m.

The land around Ostend is covered by artificial surfaces (40%) and grassland (22%) within 3 km, water (43%), cropland (23%) and grassland (22%) within 16 km, and cropland (35%) and water (33%) within 80 km.

3 km
25 m
16 km
49 m
80 km
318 m
treesgrasslandcroplandartificial surfacesbare terrainwaterwetland
August weather nearby: Middelkerke 8.0 km · Zedelgem 17 km · Sint-Andries 18 km · Blankenberge 18 km · Torhout 21 km · Bruges 21 km · Diksmuide 21 km · Oostkamp 22 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 Ostend (51.2155°, 2.927°, elevation 6 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. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).