Cô Tô weather in July

In July, Cô Tô sees average daytime highs of 30°C and overnight lows near 26°C, with 237 mm of rain across 27.8 wet days and about 12.5 hours of daylight. It is the 11th-warmest and 3rd-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 1% of the time in July, and the air most often feels miserable.

Daylight stretches from about 12 h 36 min at the start of July to 12 h 30 min by month's end. Set against the rest of the year, July is Cô Tô's 10th-clearest and 2nd-windiest month. For the whole year in context, see Cô Tô's year-round climate.

Daytime high
30°
11th warmest
Overnight low
26°
9th coldest
Rainfall
237 mm
27.8 wet days
Daylight
12 h 36 min
5:49 AM – 6:22 PM
Cloud cover
89%
10th clearest
Wind
13 km/h
2nd windiest
Solar energy
4.62 kWh/m²
Travel score
2.7
out of 10

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 Cô Tô reaches about 30°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 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)
13026
23026
33026
43026
53026
63026
73026
83026
93026
103026
113026
123026
133026
143026
153026
163026
173026
183026
193026
203026
213026
223026
233026
243026
253026
263026
273026
283026
293026
303026
313026

How July really feels in Cô Tô

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.

Cô Tô weather by month

How July compares with the rest of the year at a glance. July is the 11th-warmest and 3rd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan31° / 23°264.911.55.1
Feb32° / 23°152.611.74.7
Mar33° / 25°477.211.93.5
Apr34° / 26°971512.22.6
May33° / 27°18725.212.52.3
Jun31° / 26°23126.612.62.6
Jul30° / 26°23727.812.52.7
Aug30° / 26°22528.812.32.6
Sep30° / 26°26727.512.12.6
Oct31° / 25°31527.611.82.6
Nov31° / 24°13916.911.53.5
Dec31° / 24°62911.44.7

Cloud cover in July

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 1% of the time in July.

Beyond those clear spells, partly cloudy skies cover about 5% of July, with mostly cloudy or overcast conditions the remaining 93%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
1595
2694
3694
4694
5694
6694
7694
8793
9793
10793
11793
12892
13892
14892
15892
16991
17991
18991
19892
20892
21892
22793
23793
24793
25793
26694
27595
28595
29595
30595
31595

Chance of precipitation in July

Any precipitation

Cô Tô gets around 237 mm of rain over 27.8 wet days in July. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 90% and peaks near 91% on the wettest days.

0%20%40%60%80%100%151015202531
Rain chance (%)
191
291
391
491
591
691
791
890
990
1090
1190
1290
1390
1489
1589
1689
1789
1889
1989
2089
2189
2289
2389
2489
2589
2690
2790
2890
2991
3091
3191

Humidity in July

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, July lands in the miserable band about 95% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Oppressive (%)Miserable (%)
1397
2397
3496
4496
5496
6595
7595
8595
9595
10595
11595
12595
13595
14595
15595
16595
17595
18595
19595
20595
21595
22595
23595
24694
25694
26694
27793
28793
29793
30793
31793

Wind in July

Winds average 13 km/h in July.

Across July, daily wind ranges from about 13 km/h on the calmest days to 15 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
113light breeze
213light breeze
313light breeze
413light breeze
513light breeze
613light breeze
713light breeze
813light breeze
913light breeze
1013light breeze
1113light breeze
1213light breeze
1313light breeze
1413light breeze
1513light breeze
1613light breeze
1713light breeze
1813light breeze
1913light breeze
2014light breeze
2114light breeze
2214light breeze
2314light breeze
2414light breeze
2514light breeze
2614light breeze
2714light breeze
2814light breeze
2915light breeze
3015light breeze
3115light breeze

Sunrise & sunset in July

DaylightNight

Daylight runs from about 12 h 36 min at the start of July to 12 h 30 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 6 minutes over July. Sunrise moves from 5:45 AM to 5:52 AM, and sunset from 6:21 PM to 6:20 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.65:456:21
212.65:466:21
312.65:466:21
412.65:466:22
512.65:466:22
612.65:476:22
712.65:476:22
812.65:476:22
912.65:476:22
1012.65:486:22
1112.65:486:22
1212.65:486:22
1312.65:486:22
1412.65:496:22
1512.65:496:22
1612.65:496:22
1712.55:496:22
1812.55:496:22
1912.55:506:22
2012.55:506:22
2112.55:506:22
2212.55:506:22
2312.55:516:22
2412.55:516:21
2512.55:516:21
2612.55:516:21
2712.55:516:21
2812.55:526:21
2912.55:526:20
3012.55:526:20
3112.55:526:20

Solar energy in July

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in July, about 4.62 kWh/m².

For context, solar energy here swings from a low near 4.37 kWh/m² to a high of 6.1 kWh/m² in April across the year — July's 4.62 kWh/m² sits near the bottom.

024151015202531
Solar energy (kWh/m²)Level
14.6Bright
24.6Bright
34.6Bright
44.6Bright
54.6Bright
64.6Bright
74.7Bright
84.7Bright
94.7Bright
104.7Bright
114.7Bright
124.7Bright
134.7Bright
144.7Bright
154.7Bright
164.7Bright
174.7Bright
184.7Bright
194.7Bright
204.6Bright
214.6Bright
224.6Bright
234.6Bright
244.6Bright
254.6Bright
264.6Bright
274.5Bright
284.5Bright
294.5Bright
304.5Bright
314.5Bright
Planning a trip in July

Hazard calendar for Cô Tô

In seasonPeak

In July, Cô Tô sits inside its pacific typhoon and rainy season season. The full year is below, with each hazard's peak months called out.

Cô Tô sits in the Pacific typhoon belt; the season peaks July–October.

Cô Tô's rainy season runs May–October, when most of the year's rain falls.

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

Is July a good time to visit Cô Tô?

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

2.7
Sightseeing
6th-best month of the year
3.8
Beach & pool
9th-best month of the year

July is a weaker month for outdoor sightseeing in Cô Tô.

What to pack for Cô Tô in July

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

In July, Cô Tô sees daytime highs around 30°C and nights near 26°C. Pack light clothes and rain gear. Worth having: sun protection. About 28 days see rain.

light clothesrain gearsun protection

Sea temperature near Cô Tô in July

The nearest coast averages about 29°C in July — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 29 km away) is warmest in May at about 31°C and coldest in January near 27°C.

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

26°28°30°32°JanFebMarAprMayJunJulAugSepOctNovDecwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan27Warm
Feb28Warm
Mar29Tropical
Apr30Tropical
May31Tropical
Jun30Tropical
Jul29Tropical
Aug29Tropical
Sep29Tropical
Oct29Tropical
Nov29Tropical
Dec28Warm

UV index in Cô Tô 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 Cô Tô peaks around August 19 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 11 at about 9 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highAug 19UV 13Dec 11UV 9
UV index (midday)Level
Jan10Extreme
Feb11Extreme
Mar12Extreme
Apr12Extreme
May11Extreme
Jun11Extreme
Jul12Extreme
Aug13Extreme
Sep13Extreme
Oct10Very high
Nov9Very high
Dec9Very high

Air quality in Cô Tô 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 Cô Tô is worst in January — around 55 µg/m³ PM2.5 (poor), about 2.6× the cleanest month (August, 21 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecPoorModeratePoorJan 1754 µg/m³Aug 1422 µg/m³
PM2.5 (µg/m³)Level
Jan55Poor
Feb49Poor
Mar44Poor
Apr40Poor
May33Moderate
Jun25Moderate
Jul24Moderate
Aug21Moderate
Sep27Moderate
Oct39Poor
Nov47Poor
Dec48Poor
Location & terrain

Where is Cô Tô?

Cô Tô sits at 10.3°N, 105.0°E, 1 m above sea level, in Vietnam. The nearest listed city is Óc Eo, 19 km away.

Topography around Cô Tô

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

Within 3 km, the terrain around Cô Tô has significant variations in elevation — a maximum elevation change of 413 m around an average of 15 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 633 m; within 80 km, large variations in elevation — a maximum elevation change of 691 m.

The land around Cô Tô is covered by cropland (76%) within 3 km, cropland (79%) within 16 km, and cropland (61%) and water (23%) within 80 km.

3 km
413 m
16 km
633 m
80 km
691 m
treesgrasslandcroplandartificial surfacesbare terrainwater
July weather nearby: Óc Eo 19 km · Tịnh Biên 29 km · Núi Sập 29 km · Rạch Giá 38 km · Châu Đốc 40 km · Châu Phong 43 km · Vĩnh Thạnh 44 km · Kiến An 45 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 Cô Tô (10.35°, 105.0167°, elevation 1 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).