Đồng Hới weather in August

In August, Đồng Hới sees average daytime highs of 31°C and overnight lows near 26°C, with 146 mm of rain across 13.5 wet days and about 12.6 hours of daylight. It is the 3rd-warmest and 5th-wettest month of the year here.

Day-to-day highs hold fairly steady near 31°C through the month. The sky is clear or mostly clear about 11% of the time in August, and the air most often feels oppressive.

Daylight stretches from about 12 h 48 min at the start of August to 12 h 24 min by month's end. Set against the rest of the year, August is Đồng Hới's 10th-clearest and 4th-windiest month. For the whole year in context, see Đồng Hới's year-round climate.

Daytime high
31°
3rd warmest
Overnight low
26°
10th coldest
Rainfall
146 mm
13.5 wet days
Daylight
12 h 36 min
5:40 AM – 6:15 PM
Cloud cover
81%
10th clearest
Wind
15 km/h
4th windiest
Solar energy
5 kWh/m²
Travel score
3.9
out of 10

Đồng Hới is capital of Quảng Bình province, Vietnam.

Density
859/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

Day-to-day highs hold fairly steady near 31°C through the month.

A typical August day in Đồng Hới reaches about 31°C in the afternoon and slips back to 26°C overnight — a 5°C spread between the day's warmth and the night's chill. On most days the high lands between 28°C and 33°C. Set against its neighbours, August runs on par with July and about 2°C warmer than September.

20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
13127
23127
33127
43127
53127
63127
73127
83127
93127
103127
113127
123127
133127
143127
153126
163126
173126
183126
193126
203126
213126
223126
233126
243126
253126
263126
273126
283126
293126
303126
313126

How August really feels in Đồng Hới

Once humidity and wind are folded in, August averages 31 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
31
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

The story in August is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Đồng Hới weather by month

How August compares with the rest of the year at a glance. August is the 3rd-warmest and 5th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan21° / 18°12517.411.15.2
Feb22° / 18°7713.811.45.8
Mar25° / 21°8213.311.96.2
Apr28° / 23°8812.812.45.6
May30° / 26°11214.712.84.2
Jun32° / 27°638.1133.9
Jul32° / 27°941012.93.9
Aug31° / 26°14613.512.63.9
Sep29° / 25°34519.612.13.9
Oct27° / 24°5312411.64.5
Nov25° / 21°36620.911.24.9
Dec22° / 19°22820.3114.8

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 11% of the time in August.

Beyond those clear spells, partly cloudy skies cover about 9% of August, with mostly cloudy or overcast conditions the remaining 80%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
11981
21981
32080
41981
51882
61882
71981
81981
91981
101981
111981
121981
131882
141882
151981
161981
171981
182179
192179
202179
212179
222179
232278
242278
252278
262377
272278
282278
292278
302278
312179

Chance of precipitation in August

Any precipitation

Đồng Hới gets around 146 mm of rain over 13.5 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 43% and peaks near 55% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%151015202531
Rain chance (%)
139
238
338
437
536
636
735
835
935
1035
1136
1237
1337
1438
1539
1641
1742
1843
1945
2047
2148
2250
2351
2452
2552
2653
2753
2854
2954
3055
3155

Humidity in August

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, August lands in the oppressive band about 70% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Oppressive (%)Miserable (%)
17723
27624
37624
47525
57525
67525
77525
87525
97525
107525
117426
127426
137426
147327
157327
167228
177129
187030
196931
206832
216634
226535
236436
246436
256337
266238
276238
286238
296238
306238
316238

Wind in August

Winds average 15 km/h in August.

Across August, daily wind ranges from about 12 km/h on the calmest days to 17 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
117light breeze
217light breeze
317light breeze
417light breeze
517light breeze
617light breeze
717light breeze
817light breeze
917light breeze
1017light breeze
1116light breeze
1216light breeze
1316light breeze
1416light breeze
1515light breeze
1615light breeze
1715light breeze
1815light breeze
1914light breeze
2014light breeze
2114light breeze
2214light breeze
2313light breeze
2413light breeze
2513light breeze
2613light breeze
2713light breeze
2812light breeze
2912light breeze
3012light breeze
3112light breeze

Sunrise & sunset in August

DaylightNight

Daylight runs from about 12 h 48 min at the start of August to 12 h 24 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 24 minutes over August. Sunrise moves from 5:36 AM to 5:43 AM, and sunset from 6:23 PM to 6:04 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.85:366:23
212.85:366:23
312.85:366:23
412.85:376:22
512.75:376:22
612.75:376:21
712.75:386:21
812.75:386:20
912.75:386:20
1012.75:386:19
1112.75:396:18
1212.75:396:18
1312.65:396:17
1412.65:396:17
1512.65:406:16
1612.65:406:15
1712.65:406:15
1812.65:406:14
1912.55:406:13
2012.55:416:13
2112.55:416:12
2212.55:416:11
2312.55:416:11
2412.55:416:10
2512.55:426:09
2612.45:426:08
2712.45:426:08
2812.45:426:07
2912.45:426:06
3012.45:436:05
3112.45:436:04

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 5 kWh/m².

For context, solar energy here swings from a low near 2.38 kWh/m² to a high of 5.68 kWh/m² in May across the year — August's 5 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.0Bright
25.0Bright
35.0Bright
45.0Bright
55.0Bright
65.0Bright
75.0Bright
85.0Bright
95.0Bright
105.0Bright
115.0Bright
125.0Bright
135.0Bright
145.0Bright
155.0Bright
165.0Bright
175.0Bright
185.0Bright
195.0Bright
205.0Bright
215.0Bright
224.9Bright
234.9Bright
244.9Bright
254.9Bright
264.9Bright
274.9Bright
284.8Bright
294.8Bright
304.8Bright
314.8Bright
Planning a trip in August

Hazard calendar for Đồng Hới

In seasonPeak

In August, Đồng Hới sits inside its pacific typhoon season. The full year is below, with each hazard's peak months called out.

Đồng Hới sits in the Pacific typhoon belt; the season peaks July–October.

Đồng Hới's monsoon runs September–November, when most of the year's rain falls.

Pacific typhoon
Monsoon
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is August a good time to visit Đồng Hới?

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

3.9
Sightseeing
9th-best month of the year
5.8
Beach & pool
5th-best month of the year

August is a weaker month for outdoor sightseeing in Đồng Hới.

What to pack for Đồng Hới in August

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

In August, Đồng Hới sees daytime highs around 31°C and nights near 26°C. Pack light clothes. Worth having: rain gear and sun protection. About 14 days see rain.

light clothesrain gearsun protection

Sea temperature near Đồng Hới in August

The nearest coast averages about 30°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 17 km away) is warmest in August at about 30°C and coldest in February near 22°C.

The water stays above 20°C all year — warm enough for a swim any month.

20°25°30°JanFebMarAprMayJunJulAugSepOctNovDecrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan22Refreshing
Feb22Refreshing
Mar23Refreshing
Apr25Warm
May28Warm
Jun29Tropical
Jul29Tropical
Aug30Tropical
Sep29Tropical
Oct28Warm
Nov26Warm
Dec24Refreshing

UV index in Đồng Hới in August

LowModerateHighVery highExtreme

Clear-sky midday UV in August peaks around 13 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Đồng Hới peaks around August 12 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 16 at about 6 (high).

The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecVery highExtremeVery highHighAug 12UV 13Dec 16UV 6
UV index (midday)Level
Jan8Very high
Feb10Very high
Mar9Very high
Apr9Very high
May12Extreme
Jun12Extreme
Jul13Extreme
Aug13Extreme
Sep11Extreme
Oct10Very high
Nov8Very high
Dec6High

Air quality in Đồng Hới 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 Đồng Hới is worst in April — around 65 µg/m³ PM2.5 (unhealthy), about 4.9× the cleanest month (July, 13 µg/m³).

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

020406080JanFebMarAprMayJunJulAugSepOctNovDecModerateUnhealthyModerateApr 1064 µg/m³Jul 1514 µg/m³
PM2.5 (µg/m³)Level
Jan20Moderate
Feb26Moderate
Mar62Unhealthy
Apr65Unhealthy
May21Moderate
Jun14Moderate
Jul13Moderate
Aug14Moderate
Sep16Moderate
Oct20Moderate
Nov18Moderate
Dec21Moderate
Location & terrain

Where is Đồng Hới?

Đồng Hới sits at 17.5°N, 106.6°E, 9 m above sea level, in Vietnam. The nearest listed city is Quán Hàu, 7.0 km away.

thị xã Quảng TrịHà Tĩnh

Topography around Đồng Hới

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

Within 3 km, the terrain around Đồng Hới has only modest variations in elevation — a maximum elevation change of 22 m around an average of 4 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 711 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,630 m.

The land around Đồng Hới is covered by artificial surfaces (38%) and water (29%) within 3 km, water (45%) and trees (29%) within 16 km, and trees (61%) and water (32%) within 80 km.

3 km
22 m
16 km
711 m
80 km
1,630 m
treesgrasslandcroplandartificial surfacesbare terrainwater
August weather nearby: Quán Hàu 7.0 km · Hoàn Lão 16 km · Ba Đồn 38 km · Kỳ Anh 74 km · Cam Lộ 83 km · Ðông Hà 89 km · thị xã Quảng Trị 100 km · Hà Tĩnh 123 km

Vietnam travel facts

Travel advisory
Level 1
Exercise Normal Precautions
Power plugs
Type A / B / C / F
220 V · 50 Hz
Prices
≈ 29% of US
price level, 2025
GDP per capita
$5,066
2025
Happiness
6.4 / 10
World Happiness, 2025
Safe drinking water
59%
of population, 2024
Homicide rate
1.5
per 100k, 2011
Road deaths
30.6
per 100k/yr, 2019
Income group
Upper middle
World Bank
English
Moderate
EF EPI 500
Religion
none 86%Catholic 6%Buddhist 6%Protestant 1%

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 Đồng Hới (17.4688°, 106.6223°, elevation 9 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. Tropical-cyclone seasons are the published climatological basin seasons (NOAA National Hurricane Center / regional warning centres). 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).