Climate averages 1991–2020
Móng Cái weather
in August.
A hot, very wet month: the warmest and the 11th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
August is a hot month in Móng Cái: daytime highs average 29.8°C and nights cool to about 26.1°C. By daytime temperature it is the warmest month of the year.
Expect about 374 mm of rain on roughly 25 days, which makes August a very wet month (the 11th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 52 min on an average August day.
The nearest other city in this atlas is Dongxing (3 km away). In August its highs average 29.9°C, about as warm as Móng Cái, with 374 mm of rain.
Among the 136 cities listed in Vietnam, Móng Cái ranks joint 106th of 136 for the warmest August highs and 124th of 136 for the driest August (rainfall, lowest first). The mean August high of those 136 cities is 30.5°C; Móng Cái is 0.7°C cooler than that mean.
From August to September, average highs fall by 0.7°C to 29.1°C, and monthly rainfall falls from 374 mm to 253 mm.
The annual picture
August in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Móng Cái climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 17.4°C12.8°C | 12.8°C | 69 | 12.8 | 11.011 h |
| February | 18.9°C14.3°C | 14.3°C | 51 | 11.2 | 11.411 h |
| March | 21.8°C17.4°C | 17.4°C | 74 | 13.1 | 12.012 h |
| April | 25.4°C21.3°C | 21.3°C | 70 | 12.7 | 12.613 h |
| May | 28.1°C24.3°C | 24.3°C | 209 | 19.0 | 13.213 h |
| June | 29.6°C26.3°C | 26.3°C | 288 | 23.5 | 13.413 h |
| July | 29.7°C26.4°C | 26.4°C | 380 | 25.0 | 13.313 h |
| August, selected | 29.8°C26.1°C | 26.1°C | 374 | 24.6 | 12.913 h |
| September | 29.1°C24.9°C | 24.9°C | 253 | 18.6 | 12.312 h |
| October | 26.9°C22.2°C | 22.2°C | 99 | 10.2 | 11.712 h |
| November | 23.4°C18.3°C | 18.3°C | 67 | 9.1 | 11.111 h |
| December | 19.1°C14.0°C | 14.0°C | 53 | 8.8 | 10.811 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
August in nearby cities
- Dongxing in AugustChina · 3 kmHigh 29.9°C · Low 26.0°C · 374 mm rain
- Fangchenggang in AugustChina · 49 kmHigh 30.6°C · Low 25.8°C · 353 mm rain
- Shangsi in AugustChina · 70 kmHigh 30.5°C · Low 24.5°C · 265 mm rain
- Qinzhou in AugustChina · 87 kmHigh 30.9°C · Low 25.5°C · 299 mm rain
- Cẩm Phả in AugustVietnam · 92 kmHigh 30.1°C · Low 26.0°C · 431 mm rain
- Xichang, China in AugustChina · 102 kmHigh 30.3°C · Low 26.6°C · 341 mm rain
- Hạ Long in AugustVietnam · 112 kmHigh 30.4°C · Low 26.1°C · 381 mm rain
- Chongzuo in AugustChina · 113 kmHigh 31.0°C · Low 24.5°C · 258 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Móng Cái) is explained once on the Móng Cái year overview and on the Sources, method and limits page.