When to go · Mong Cai
Mong Cai in January
Avoid month. Listed as a month to avoid: Jun–Aug (hot, rainy), Dec–Feb (cool, overcast).
Key facts
- Verdict
- Avoid
- Temperature
- 20°C (68°F)68°F (20°C) / 14°C (57°F)57°F (14°C)
- average high / low
- Rain days
- 8
- Crowds
- Medium
- Vietnam overall
- Prices
- Medium
- Vietnam overall
Verdict
Listed as a month to avoid: Jun–Aug (hot, rainy), Dec–Feb (cool, overcast).
Is another month better than January?
January is rated avoid. These months rate higher:
Weather in January
- Mong CaiHighs around 20 °C (68 °F), lows around 14 °C (57 °F), rain on about 8 daysHighs around 68 °F (20 °C), lows around 57 °F (14 °C), rain on about 8 days
Festivals and holidays
Dates as our data lists them. Moving holidays (lunar and Islamic calendars, Easter) shift every year: check the date for your year before you build a trip on it.
Lunar New Year big impact
Tết — 6 Feb 2027 (lunar, moves yearly) · Vietnam
Trains, buses and flights sell out a week either side; many restaurants and shops close 3–7 days; prices up.
Crowds and prices
- Crowds · Vietnam overall
- Medium
- Prices · Vietnam overall
- Medium
Vietnam overall: South and centre dry; the north is cool and grey — a jacket for Hanoi, cold nights in Sa Pa.
Compare two months
Weather, crowds and prices for any two months in Mong Cai, side by side.
Verdict
Jan: Avoid
Mar: Great (better)
Daytime high
Jan: 20 °C (68 °F)68 °F (20 °C)
Mar: 23 °C (73 °F)73 °F (23 °C)
Night low
Jan: 14 °C (57 °F)57 °F (14 °C)
Mar: 17 °C (63 °F)63 °F (17 °C)
Rain days
Jan: 8 (better)
Mar: 14
Crowds
Jan: Medium
Mar: Medium
Prices
Jan: Medium
Mar: Medium
Festivals listed
Jan: 1
Mar: 0
January: Listed as a month to avoid: Jun–Aug (hot, rainy), Dec–Feb (cool, overcast).
March: Inside Mong Cai's best window: Mar–May, Sep–Nov.
Mong Cai: figures are long-term averages from this guide, not a forecast.
What to pack
Nothing unusual for the weather this month.