Cao Bằng weather in July

In July, Cao Bằng sees average daytime highs of 30°C and overnight lows near 23°C, with 302 mm of rain across 26.4 wet days and about 13.2 hours of daylight. It is the 1st-warmest and 1st-wettest month of the year here.

Day-to-day highs hold fairly steady near 30°C through the month. The sky is clear or mostly clear about 5% of the time in July, and the air most often feels oppressive.

Daylight stretches from about 13 h 24 min at the start of July to 13 h 06 min by month's end. Set against the rest of the year, July is Cao Bằng's 11th-clearest and 9th-windiest month. For the whole year in context, see Cao Bằng's year-round climate.

Daytime high
30°
1st warmest
Overnight low
23°
12th coldest
Rainfall
302 mm
26.4 wet days
Daylight
13 h 18 min
5:23 AM – 6:39 PM
Cloud cover
86%
11th clearest
Wind
7 km/h
9th windiest
Solar energy
4.35 kWh/m²
Travel score
3.1
out of 10

Cao Bằng is former provincial capital city of Cao Bằng province, Vietnam.

Density
683/km²
people per km²
Founded
2012

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in July

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 30°C through the month.

A typical July day in Cao Bằng reaches about 30°C in the afternoon and slips back to 23°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between 26°C and 32°C. Set against its neighbours, July runs on par with June and on par with August.

20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
12924
22924
32924
42924
52924
62924
72924
83024
93024
103024
113024
123024
133024
142923
152923
162923
172923
182923
192923
202923
212923
222923
232923
242923
253023
263023
273023
283023
293023
303023
313023

How July really feels in Cao Bằng

Once humidity and wind are folded in, July 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 July is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Cao Bằng weather by month

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

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan16° / 10°6713.310.84.3
Feb18° / 12°5211.411.25.1
Mar21° / 15°891611.85.3
Apr25° / 19°11117.112.55.3
May28° / 21°21422.313.14.3
Jun29° / 23°29325.213.43.2
Jul30° / 23°30226.413.23.1
Aug30° / 23°26824.412.83.4
Sep29° / 22°15616.812.14.8
Oct26° / 19°871211.56.3
Nov22° / 15°699.710.96.6
Dec18° / 11°509.410.65.7

Cloud cover in July

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 5% of the time in July.

Beyond those clear spells, partly cloudy skies cover about 8% of July, with mostly cloudy or overcast conditions the remaining 87%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
11090
21189
31288
41288
51288
61288
71288
81288
91288
101288
111288
121288
131288
141288
151288
161288
171189
181288
191288
201387
211387
221387
231486
241585
251684
261684
271783
281783
291783
301882
311882

Chance of precipitation in July

Any precipitation

Cao Bằng gets around 302 mm of rain over 26.4 wet days in July, the wettest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 85% and peaks near 87% on the wettest days.

0%20%40%60%80%100%151015202531
Rain chance (%)
185
285
385
485
585
685
785
885
986
1086
1186
1286
1387
1487
1587
1687
1787
1887
1987
2087
2186
2286
2385
2485
2585
2684
2784
2883
2983
3083
3182

Humidity in July

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, July lands in the oppressive band about 79% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Muggy (%)Oppressive (%)Miserable (%)
127523
227523
327622
427622
527622
627622
727622
827523
927523
1027523
1127523
1227523
1317623
1417722
1517722
1617821
1717821
1808020
1908020
2008119
2108119
2208218
2308317
2408317
2508416
2608416
2708515
2808515
2918415
3018415
3118415

Wind in July

Winds average 7 km/h in July.

Across July, daily wind ranges from about 6 km/h on the calmest days to 7 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
17calm
27calm
37calm
47calm
57calm
67calm
77calm
87calm
97calm
107calm
117calm
127calm
137calm
147calm
157calm
167calm
177calm
187calm
197calm
207calm
217calm
227calm
236calm
246calm
256calm
266calm
276calm
286calm
296calm
306calm
316calm

Sunrise & sunset in July

DaylightNight

Daylight runs from about 13 h 24 min at the start of July to 13 h 06 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 18 minutes over July. Sunrise moves from 5:17 AM to 5:29 AM, and sunset from 6:40 PM to 6:33 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.45:176:40
213.45:176:40
313.45:186:40
413.45:186:40
513.45:186:40
613.35:196:40
713.35:196:40
813.35:196:40
913.35:206:40
1013.35:206:39
1113.35:216:39
1213.35:216:39
1313.35:216:39
1413.35:226:39
1513.35:226:39
1613.35:236:39
1713.35:236:38
1813.25:236:38
1913.25:246:38
2013.25:246:38
2113.25:256:37
2213.25:256:37
2313.25:266:37
2413.25:266:36
2513.25:266:36
2613.15:276:35
2713.15:276:35
2813.15:286:35
2913.15:286:34
3013.15:296:34
3113.15:296:33

Solar energy in July

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in July, about 4.35 kWh/m².

For context, solar energy here swings from a low near 2.06 kWh/m² to a high of 4.43 kWh/m² in August across the year — July's 4.35 kWh/m² sits near the top of that range.

012345151015202531
Solar energy (kWh/m²)Level
14.3Bright
24.3Bright
34.3Bright
44.3Bright
54.3Bright
64.3Bright
74.4Bright
84.4Bright
94.4Bright
104.4Bright
114.4Bright
124.4Bright
134.4Bright
144.4Bright
154.4Bright
164.4Bright
174.3Bright
184.3Bright
194.3Bright
204.3Bright
214.3Bright
224.3Bright
234.3Bright
244.3Bright
254.3Bright
264.3Bright
274.3Bright
284.4Bright
294.4Bright
304.4Bright
314.4Bright
Planning a trip in July

Hazard calendar for Cao Bằng

In seasonPeak

In July, Cao Bằng sits inside its monsoon season. The full year is below, with each hazard's peak months called out.

Cao Bằng's monsoon runs May–September, when most of the year's rain falls.

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

Is July a good time to visit Cao Bằng?

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

3.1
Sightseeing
12th-best month of the year
4.2
Beach & pool
8th-best month of the year

July is a weaker month for outdoor sightseeing in Cao Bằng.

What to pack for Cao Bằng in July

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

In July, Cao Bằng sees daytime highs around 30°C and nights near 23°C. Pack light clothes and rain gear. About 26 days see rain.

light clothesrain gear

UV index in Cao Bằng in July

LowModerateHighVery highExtreme

Clear-sky midday UV in July peaks around 12 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Cao Bằng peaks around June 22 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 19 at about 6 (high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecHighVery highVery highExtremeVery highHighJun 22UV 13Dec 19UV 6
UV index (midday)Level
Jan6High
Feb8Very high
Mar10Extreme
Apr7Very high
May8Very high
Jun13Extreme
Jul12Extreme
Aug10Extreme
Sep9Very high
Oct7High
Nov6High
Dec6High

Air quality in Cao Bằng in July

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Cao Bằng is worst in April — around 44 µg/m³ PM2.5 (poor), about 2.2× the cleanest month (July, 20 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecPoorModeratePoorApr 944 µg/m³Jul 2020 µg/m³
PM2.5 (µg/m³)Level
Jan39Poor
Feb41Poor
Mar44Poor
Apr44Poor
May30Moderate
Jun23Moderate
Jul20Moderate
Aug21Moderate
Sep24Moderate
Oct28Moderate
Nov33Moderate
Dec39Poor
Location & terrain

Where is Cao Bằng?

Cao Bằng sits at 22.7°N, 106.3°E, 197 m above sea level, in Vietnam. The nearest listed city is Thị Trấn Nước Hai, 13 km away.

Lạng SơnThái NguyênThị Trấn Na DươngThị Trấn Đại Từ

Topography around Cao Bằng

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

Within 3 km, the terrain around Cao Bằng has significant variations in elevation — a maximum elevation change of 396 m around an average of 252 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 818 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,806 m.

The land around Cao Bằng is covered by trees (75%) within 3 km, trees (88%) within 16 km, and trees (88%) within 80 km.

3 km
396 m
16 km
818 m
80 km
1,806 m
treesgrasslandcroplandartificial surfacesbare terrainwater
July weather nearby: Thị Trấn Nước Hai 13 km · Thị Trấn Trùng Khánh 33 km · Thị Trấn Thất Khê 51 km · Bắc Kạn 72 km · Lạng Sơn 104 km · Thái Nguyên 126 km · Thị Trấn Na Dương 129 km · Thị Trấn Đại Từ 131 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 Cao Bằng (22.6657°, 106.2579°, elevation 197 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).