Climate averages 1991–2020
Móng Cái weather
in December.
A mild, moderately wet month: the 10th warmest and the 2nd driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
December is a mild month in Móng Cái: daytime highs average 19.1°C and nights cool to about 14.0°C. By daytime temperature it is the 10th warmest of the 12 months.
Expect about 53 mm of rain on roughly 9 days, which makes December a moderately wet month (the 2nd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 10 h 51 min on an average December day.
The nearest other city in this atlas is Dongxing (3 km away). In December its highs average 19.1°C, about as warm as Móng Cái, with 53 mm of rain.
Among the 136 cities listed in Vietnam, Móng Cái ranks 133rd of 136 for the warmest December highs and joint 61st of 136 for the driest December (rainfall, lowest first). The mean December high of those 136 cities is 25.0°C; Móng Cái is 5.9°C cooler than that mean.
From December to January, average highs fall by 1.7°C to 17.4°C, and monthly rainfall rises from 53 mm to 69 mm.
The annual picture
December 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 | 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, selected | 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
December in nearby cities
- Dongxing in DecemberChina · 3 kmHigh 19.1°C · Low 13.8°C · 53 mm rain
- Fangchenggang in DecemberChina · 49 kmHigh 19.5°C · Low 12.8°C · 38 mm rain
- Shangsi in DecemberChina · 70 kmHigh 18.7°C · Low 11.6°C · 38 mm rain
- Qinzhou in DecemberChina · 87 kmHigh 19.9°C · Low 12.5°C · 34 mm rain
- Cẩm Phả in DecemberVietnam · 92 kmHigh 20.3°C · Low 15.9°C · 48 mm rain
- Xichang, China in DecemberChina · 102 kmHigh 20.1°C · Low 14.2°C · 29 mm rain
- Hạ Long in DecemberVietnam · 112 kmHigh 20.8°C · Low 15.8°C · 31 mm rain
- Chongzuo in DecemberChina · 113 kmHigh 19.3°C · Low 11.7°C · 35 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.