Móng Cái weather in August
In August, Móng Cái sees average daytime highs of 30°C and overnight lows near 27°C, with 374 mm of rain across 24.6 wet days and about 12.7 hours of daylight. It is the 1st-warmest and 2nd-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 17% of the time in August, and the air most often feels miserable.
Daylight stretches from about 13 hours at the start of August to 12 h 30 min by month's end. Set against the rest of the year, August is Móng Cái's 10th-clearest and 12th-windiest month. For the whole year in context, see Móng Cái's year-round climate.
- Daytime high
- 30°
- 1st warmest
- Overnight low
- 27°
- 10th coldest
- Rainfall
- 374 mm
- 24.6 wet days
- Daylight
- 12 h 42 min
- 5:30 AM – 6:15 PM
- Cloud cover
- 75%
- 10th clearest
- Wind
- 11 km/h
- 12th windiest
- Solar energy
- 4.85 kWh/m²
- Travel score
- 3.3
- out of 10
Móng Cái is provincial city of Vietnam.
- Density
- 211/km²
- people per km²
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Temperature in August
Day-to-day highs hold fairly steady near 30°C through the month.
A typical August day in Móng Cái reaches about 30°C in the afternoon and slips back to 27°C overnight — a 3°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, August runs on par with July and on par with September.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 |
| Avg low (°C) | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| 1 | 30 | 27 |
| 2 | 30 | 27 |
| 3 | 30 | 27 |
| 4 | 30 | 27 |
| 5 | 30 | 27 |
| 6 | 30 | 27 |
| 7 | 30 | 27 |
| 8 | 30 | 27 |
| 9 | 30 | 27 |
| 10 | 30 | 27 |
| 11 | 30 | 27 |
| 12 | 30 | 27 |
| 13 | 30 | 27 |
| 14 | 30 | 27 |
| 15 | 30 | 27 |
| 16 | 30 | 27 |
| 17 | 30 | 27 |
| 18 | 30 | 27 |
| 19 | 30 | 27 |
| 20 | 30 | 27 |
| 21 | 30 | 27 |
| 22 | 30 | 27 |
| 23 | 30 | 27 |
| 24 | 30 | 27 |
| 25 | 30 | 27 |
| 26 | 30 | 27 |
| 27 | 30 | 27 |
| 28 | 30 | 27 |
| 29 | 30 | 27 |
| 30 | 30 | 27 |
| 31 | 30 | 27 |
How August really feels in Móng Cái
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.
The story in August is heat — humidity pushes the afternoon "feels like" well above the raw temperature.
Móng Cái weather by month
How August compares with the rest of the year at a glance. August is the 1st-warmest and 2nd-wettest month here — the current month is highlighted below.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 17° / 14° | 69 | 12.7 | 10.8 | 5.0 |
| Feb | 18° / 15° | 50 | 11 | 11.3 | 5.4 |
| Mar | 21° / 18° | 74 | 13.1 | 11.8 | 5.7 |
| Apr | 24° / 22° | 71 | 12.7 | 12.5 | 6.2 |
| May | 28° / 25° | 209 | 19 | 13 | 4.8 |
| Jun | 30° / 27° | 288 | 23.5 | 13.3 | 3.4 |
| Jul | 30° / 27° | 380 | 25 | 13.2 | 3.2 |
| Aug | 30° / 27° | 374 | 24.6 | 12.7 | 3.3 |
| Sep | 29° / 26° | 253 | 18.6 | 12.1 | 4.3 |
| Oct | 27° / 24° | 99 | 10.3 | 11.5 | 6.7 |
| Nov | 23° / 20° | 67 | 9.1 | 11 | 7.1 |
| Dec | 19° / 16° | 53 | 8.8 | 10.7 | 6.3 |
Cloud cover in August
The sky is clear or mostly clear about 17% of the time in August.
Beyond those clear spells, partly cloudy skies cover about 10% of August, with mostly cloudy or overcast conditions the remaining 74%.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Clearer (%) | 25 | 25 | 24 | 24 | 24 | 24 | 24 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 23 | 23 | 23 | 24 | 26 | 27 | 28 | 29 | 30 | 31 | 33 | 33 | 33 | 35 | 34 | 34 | 34 |
| Cloudier (%) | 75 | 75 | 76 | 76 | 76 | 76 | 76 | 78 | 78 | 78 | 78 | 78 | 78 | 78 | 77 | 77 | 77 | 76 | 74 | 73 | 72 | 71 | 70 | 69 | 67 | 67 | 67 | 65 | 66 | 66 | 66 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 25 | 75 |
| 2 | 25 | 75 |
| 3 | 24 | 76 |
| 4 | 24 | 76 |
| 5 | 24 | 76 |
| 6 | 24 | 76 |
| 7 | 24 | 76 |
| 8 | 22 | 78 |
| 9 | 22 | 78 |
| 10 | 22 | 78 |
| 11 | 22 | 78 |
| 12 | 22 | 78 |
| 13 | 22 | 78 |
| 14 | 22 | 78 |
| 15 | 23 | 77 |
| 16 | 23 | 77 |
| 17 | 23 | 77 |
| 18 | 24 | 76 |
| 19 | 26 | 74 |
| 20 | 27 | 73 |
| 21 | 28 | 72 |
| 22 | 29 | 71 |
| 23 | 30 | 70 |
| 24 | 31 | 69 |
| 25 | 33 | 67 |
| 26 | 33 | 67 |
| 27 | 33 | 67 |
| 28 | 35 | 65 |
| 29 | 34 | 66 |
| 30 | 34 | 66 |
| 31 | 34 | 66 |
Chance of precipitation in August
Móng Cái gets around 374 mm of rain over 24.6 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 79% and peaks near 82% on the wettest days. The odds ease toward the end of the month.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rain chance (%) | 81 | 81 | 81 | 81 | 81 | 81 | 81 | 82 | 82 | 82 | 82 | 82 | 82 | 82 | 81 | 81 | 81 | 80 | 80 | 79 | 79 | 78 | 78 | 77 | 76 | 76 | 75 | 75 | 75 | 75 | 75 |
| Rain chance (%) | |
|---|---|
| 1 | 81 |
| 2 | 81 |
| 3 | 81 |
| 4 | 81 |
| 5 | 81 |
| 6 | 81 |
| 7 | 81 |
| 8 | 82 |
| 9 | 82 |
| 10 | 82 |
| 11 | 82 |
| 12 | 82 |
| 13 | 82 |
| 14 | 82 |
| 15 | 81 |
| 16 | 81 |
| 17 | 81 |
| 18 | 80 |
| 19 | 80 |
| 20 | 79 |
| 21 | 79 |
| 22 | 78 |
| 23 | 78 |
| 24 | 77 |
| 25 | 76 |
| 26 | 76 |
| 27 | 75 |
| 28 | 75 |
| 29 | 75 |
| 30 | 75 |
| 31 | 75 |
Humidity in August
Most of August feels miserable — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, August lands in the miserable band about 96% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Oppressive (%) | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 2 | 2 | 2 | 3 | 3 | 4 | 4 | 5 | 5 | 6 | 6 | 7 | 7 | 8 | 9 | 9 | 10 | 11 |
| Miserable (%) | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 98 | 98 | 98 | 98 | 97 | 97 | 96 | 96 | 95 | 95 | 94 | 94 | 93 | 93 | 92 | 91 | 91 | 90 | 89 |
| Oppressive (%) | Miserable (%) | |
|---|---|---|
| 1 | 1 | 99 |
| 2 | 1 | 99 |
| 3 | 1 | 99 |
| 4 | 1 | 99 |
| 5 | 1 | 99 |
| 6 | 1 | 99 |
| 7 | 1 | 99 |
| 8 | 1 | 99 |
| 9 | 1 | 99 |
| 10 | 1 | 99 |
| 11 | 1 | 99 |
| 12 | 1 | 99 |
| 13 | 2 | 98 |
| 14 | 2 | 98 |
| 15 | 2 | 98 |
| 16 | 2 | 98 |
| 17 | 3 | 97 |
| 18 | 3 | 97 |
| 19 | 4 | 96 |
| 20 | 4 | 96 |
| 21 | 5 | 95 |
| 22 | 5 | 95 |
| 23 | 6 | 94 |
| 24 | 6 | 94 |
| 25 | 7 | 93 |
| 26 | 7 | 93 |
| 27 | 8 | 92 |
| 28 | 9 | 91 |
| 29 | 9 | 91 |
| 30 | 10 | 90 |
| 31 | 11 | 89 |
Wind in August
Winds average 11 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.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wind speed (km/h) | 12 | 12 | 12 | 12 | 12 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 |
| Feels | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm |
| Wind speed (km/h) | Feels | |
|---|---|---|
| 1 | 12 | calm |
| 2 | 12 | calm |
| 3 | 12 | calm |
| 4 | 12 | calm |
| 5 | 12 | calm |
| 6 | 11 | calm |
| 7 | 11 | calm |
| 8 | 11 | calm |
| 9 | 11 | calm |
| 10 | 11 | calm |
| 11 | 11 | calm |
| 12 | 11 | calm |
| 13 | 11 | calm |
| 14 | 11 | calm |
| 15 | 11 | calm |
| 16 | 11 | calm |
| 17 | 11 | calm |
| 18 | 11 | calm |
| 19 | 11 | calm |
| 20 | 11 | calm |
| 21 | 11 | calm |
| 22 | 11 | calm |
| 23 | 11 | calm |
| 24 | 11 | calm |
| 25 | 11 | calm |
| 26 | 11 | calm |
| 27 | 11 | calm |
| 28 | 11 | calm |
| 29 | 11 | calm |
| 30 | 11 | calm |
| 31 | 11 | calm |
Sunrise & sunset in August
Daylight runs from about 13 hours at the start of August to 12 h 30 min by month's end. The lit band spans sunrise to sunset each day.
Days shrink by about 30 minutes over August. Sunrise moves from 5:24 AM to 5:35 AM, and sunset from 6:24 PM to 6:02 PM.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight (h) | 13.0 | 13.0 | 13.0 | 12.9 | 12.9 | 12.9 | 12.9 | 12.9 | 12.9 | 12.9 | 12.8 | 12.8 | 12.8 | 12.8 | 12.8 | 12.7 | 12.7 | 12.7 | 12.7 | 12.7 | 12.7 | 12.6 | 12.6 | 12.6 | 12.6 | 12.6 | 12.5 | 12.5 | 12.5 | 12.5 | 12.5 |
| Sunrise (AM) | 5:24 | 5:25 | 5:25 | 5:26 | 5:26 | 5:26 | 5:27 | 5:27 | 5:27 | 5:28 | 5:28 | 5:28 | 5:29 | 5:29 | 5:30 | 5:30 | 5:30 | 5:31 | 5:31 | 5:31 | 5:32 | 5:32 | 5:32 | 5:32 | 5:33 | 5:33 | 5:33 | 5:34 | 5:34 | 5:34 | 5:35 |
| Sunset (PM) | 6:24 | 6:24 | 6:23 | 6:22 | 6:22 | 6:21 | 6:21 | 6:20 | 6:19 | 6:19 | 6:18 | 6:17 | 6:17 | 6:16 | 6:15 | 6:15 | 6:14 | 6:13 | 6:12 | 6:11 | 6:11 | 6:10 | 6:09 | 6:08 | 6:07 | 6:06 | 6:05 | 6:05 | 6:04 | 6:03 | 6:02 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 13.0 | 5:24 | 6:24 |
| 2 | 13.0 | 5:25 | 6:24 |
| 3 | 13.0 | 5:25 | 6:23 |
| 4 | 12.9 | 5:26 | 6:22 |
| 5 | 12.9 | 5:26 | 6:22 |
| 6 | 12.9 | 5:26 | 6:21 |
| 7 | 12.9 | 5:27 | 6:21 |
| 8 | 12.9 | 5:27 | 6:20 |
| 9 | 12.9 | 5:27 | 6:19 |
| 10 | 12.9 | 5:28 | 6:19 |
| 11 | 12.8 | 5:28 | 6:18 |
| 12 | 12.8 | 5:28 | 6:17 |
| 13 | 12.8 | 5:29 | 6:17 |
| 14 | 12.8 | 5:29 | 6:16 |
| 15 | 12.8 | 5:30 | 6:15 |
| 16 | 12.7 | 5:30 | 6:15 |
| 17 | 12.7 | 5:30 | 6:14 |
| 18 | 12.7 | 5:31 | 6:13 |
| 19 | 12.7 | 5:31 | 6:12 |
| 20 | 12.7 | 5:31 | 6:11 |
| 21 | 12.7 | 5:32 | 6:11 |
| 22 | 12.6 | 5:32 | 6:10 |
| 23 | 12.6 | 5:32 | 6:09 |
| 24 | 12.6 | 5:32 | 6:08 |
| 25 | 12.6 | 5:33 | 6:07 |
| 26 | 12.6 | 5:33 | 6:06 |
| 27 | 12.5 | 5:33 | 6:05 |
| 28 | 12.5 | 5:34 | 6:05 |
| 29 | 12.5 | 5:34 | 6:04 |
| 30 | 12.5 | 5:34 | 6:03 |
| 31 | 12.5 | 5:35 | 6:02 |
Solar energy in August
Average shortwave solar energy reaching the ground each day in August, about 4.85 kWh/m².
For context, solar energy here swings from a low near 2.69 kWh/m² to a high of 5.1 kWh/m² in May across the year — August's 4.85 kWh/m² falls in the middle.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Solar energy (kWh/m²) | 4.9 | 4.8 | 4.8 | 4.8 | 4.8 | 4.8 | 4.8 | 4.8 | 4.8 | 4.8 | 4.8 | 4.8 | 4.8 | 4.8 | 4.8 | 4.8 | 4.8 | 4.8 | 4.8 | 4.8 | 4.9 | 4.9 | 4.9 | 4.9 | 4.9 | 4.9 | 4.9 | 4.9 | 4.9 | 4.8 | 4.8 |
| Level | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| 1 | 4.9 | Bright |
| 2 | 4.8 | Bright |
| 3 | 4.8 | Bright |
| 4 | 4.8 | Bright |
| 5 | 4.8 | Bright |
| 6 | 4.8 | Bright |
| 7 | 4.8 | Bright |
| 8 | 4.8 | Bright |
| 9 | 4.8 | Bright |
| 10 | 4.8 | Bright |
| 11 | 4.8 | Bright |
| 12 | 4.8 | Bright |
| 13 | 4.8 | Bright |
| 14 | 4.8 | Bright |
| 15 | 4.8 | Bright |
| 16 | 4.8 | Bright |
| 17 | 4.8 | Bright |
| 18 | 4.8 | Bright |
| 19 | 4.8 | Bright |
| 20 | 4.8 | Bright |
| 21 | 4.9 | Bright |
| 22 | 4.9 | Bright |
| 23 | 4.9 | Bright |
| 24 | 4.9 | Bright |
| 25 | 4.9 | Bright |
| 26 | 4.9 | Bright |
| 27 | 4.9 | Bright |
| 28 | 4.9 | Bright |
| 29 | 4.9 | Bright |
| 30 | 4.8 | Bright |
| 31 | 4.8 | Bright |
Hazard calendar for Móng Cái
In August, Móng Cái sits inside its pacific typhoon and monsoon season. The full year is below, with each hazard's peak months called out.
Móng Cái sits in the Pacific typhoon belt; the season peaks July–October.
Móng Cái's monsoon runs May–September, when most of the year's rain falls.
Is August a good time to visit Móng Cái?
Our two travel scores rate August for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
August is a weaker month for outdoor sightseeing in Móng Cái.
What to pack for Móng Cái in August
From August's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In August, Móng Cái sees daytime highs around 30°C and nights near 27°C. Pack light clothes and rain gear. Worth having: sun protection. About 25 days see rain.
Sea temperature near Móng Cái 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 19 km away) is warmest in August at about 30°C and coldest in February near 19°C.
It's comfortable for a long swim from Mar 15 to Dec 30 — about 9.6 months when the water holds above 20°C.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 19 | 19 | 20 | 23 | 27 | 29 | 29 | 30 | 29 | 27 | 24 | 21 |
| Comfort | Cool | Cool | Refreshing | Refreshing | Warm | Tropical | Tropical | Tropical | Tropical | Warm | Warm | Refreshing |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 19 | Cool |
| Feb | 19 | Cool |
| Mar | 20 | Refreshing |
| Apr | 23 | Refreshing |
| May | 27 | Warm |
| Jun | 29 | Tropical |
| Jul | 29 | Tropical |
| Aug | 30 | Tropical |
| Sep | 29 | Tropical |
| Oct | 27 | Warm |
| Nov | 24 | Warm |
| Dec | 21 | Refreshing |
UV index in Móng Cái in August
Clear-sky midday UV in August peaks around 8 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Móng Cái peaks around July 9 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 17 at about 6 (high).
The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 6 | 8 | 9 | 8 | 10 | 12 | 12 | 8 | 9 | 9 | 7 | 6 |
| Level | High | Very high | Very high | Very high | Very high | Extreme | Extreme | Very high | Very high | Very high | High | High |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 6 | High |
| Feb | 8 | Very high |
| Mar | 9 | Very high |
| Apr | 8 | Very high |
| May | 10 | Very high |
| Jun | 12 | Extreme |
| Jul | 12 | Extreme |
| Aug | 8 | Very high |
| Sep | 9 | Very high |
| Oct | 9 | Very high |
| Nov | 7 | High |
| Dec | 6 | High |
Air quality in Móng Cái in August
Average fine-particle pollution (PM2.5) through the year — so you can see where August falls, not just the annual average.
Air quality in Móng Cái is worst in December — around 46 µg/m³ PM2.5 (poor), about 2.8× the cleanest month (July, 16 µg/m³).
Modeled monthly averages (CAMS reanalysis, 2015–2024).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 45 | 42 | 44 | 38 | 25 | 17 | 16 | 18 | 25 | 32 | 35 | 46 |
| Level | Poor | Poor | Poor | Poor | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Poor |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 45 | Poor |
| Feb | 42 | Poor |
| Mar | 44 | Poor |
| Apr | 38 | Poor |
| May | 25 | Moderate |
| Jun | 17 | Moderate |
| Jul | 16 | Moderate |
| Aug | 18 | Moderate |
| Sep | 25 | Moderate |
| Oct | 32 | Moderate |
| Nov | 35 | Moderate |
| Dec | 46 | Poor |
Where is Móng Cái?
Móng Cái sits at 21.5°N, 108.0°E, 9 m above sea level, in Vietnam. The nearest listed city is Thị Trấn Đầm Hà, 43 km away.
Topography around Móng Cái
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Móng Cái.
Within 3 km, the terrain around Móng Cái has only modest variations in elevation — a maximum elevation change of 43 m around an average of 8 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 367 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,472 m.
The land around Móng Cái is covered by artificial surfaces (38%) and trees (24%) within 3 km, water (44%) and trees (38%) within 16 km, and trees (53%) and water (40%) within 80 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
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 Móng Cái (21.5247°, 107.9662°, 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).