Climate averages 1991–2020
Hạ Long weather
in January.
A mild, fairly dry month: the coolest and the 3rd driest of the year. Meets the pleasant-weather rule
Long-term climate patterns, not a forecast for a particular trip.
January is a mild month in Hạ Long: daytime highs average 19.1°C and nights cool to about 14.6°C. By daytime temperature it is the coolest month of the year.
Expect about 34 mm of rain on roughly 6 days, which makes January a fairly dry month (the 3rd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 11 h 01 min on an average January day.
The nearest other city in this atlas is Cẩm Phả (22 km away). In January its highs average 18.6°C, 0.5°C cooler than Hạ Long, with 61 mm of rain.
Among the 136 cities listed in Vietnam, Hạ Long ranks joint 121st of 136 for the warmest January highs and joint 74th of 136 for the driest January (rainfall, lowest first). The mean January high of those 136 cities is 24.8°C; Hạ Long is 5.7°C cooler than that mean.
From January to February, average highs rise by 1.3°C to 20.5°C, and monthly rainfall falls from 34 mm to 21 mm.
The annual picture
January 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
Hạ Long climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January, selected | 19.1°C14.6°C | 14.6°C | 34 | 6.4 | 11.011 h |
| February | 20.5°C15.8°C | 15.8°C | 21 | 5.7 | 11.411 h |
| March | 23.2°C18.5°C | 18.5°C | 43 | 8.8 | 12.012 h |
| April | 26.7°C21.8°C | 21.8°C | 69 | 11.6 | 12.613 h |
| May | 29.3°C24.8°C | 24.8°C | 219 | 19.5 | 13.113 h |
| June | 30.8°C26.8°C | 26.8°C | 266 | 22.4 | 13.413 h |
| July | 30.7°C26.8°C | 26.8°C | 305 | 24.3 | 13.313 h |
| August | 30.4°C26.1°C | 26.1°C | 381 | 26.2 | 12.813 h |
| September | 29.6°C25.0°C | 25.0°C | 243 | 20.0 | 12.312 h |
| October | 27.8°C22.9°C | 22.9°C | 104 | 11.9 | 11.712 h |
| November | 24.8°C19.6°C | 19.6°C | 51 | 8.2 | 11.211 h |
| December | 20.8°C15.8°C | 15.8°C | 31 | 5.9 | 10.911 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
January in nearby cities
- Cẩm Phả in JanuaryVietnam · 22 kmHigh 18.6°C · Low 14.6°C · 61 mm rain
- Haiphong in JanuaryVietnam · 42 kmHigh 19.6°C · Low 13.9°C · 37 mm rain
- Kiến An in JanuaryVietnam · 49 kmHigh 19.6°C · Low 14.3°C · 37 mm rain
- Thị Trấn Mạo Khê in JanuaryVietnam · 51 kmHigh 19.9°C · Low 13.5°C · 32 mm rain
- Thị Trấn Đông Triều in JanuaryVietnam · 60 kmHigh 19.7°C · Low 13.4°C · 32 mm rain
- Chũ in JanuaryVietnam · 71 kmHigh 18.8°C · Low 12.1°C · 36 mm rain
- Hải Dương in JanuaryVietnam · 77 kmHigh 19.8°C · Low 13.6°C · 36 mm rain
- Chí Linh in JanuaryVietnam · 80 kmHigh 19.6°C · Low 13.4°C · 36 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 Hạ Long) is explained once on the Hạ Long year overview and on the Sources, method and limits page.