Climate averages 1991–2020

Lạng Sơn weather
in January.

A mild, moderately wet month: the coolest and the 4th driest of the year.

Long-term climate patterns, not a forecast for a particular trip.

Average high 17.2°C Daytime mean, January

Average low 10.8°C Night-time mean, January

Rainfall 57 mm 11 days with ≥1 mm

Daylight 11 h Sunrise to sunset, per day

January is a mild month in Lạng Sơn: daytime highs average 17.2°C and nights cool to about 10.8°C. By daytime temperature it is the coolest month of the year.

Expect about 57 mm of rain on roughly 11 days, which makes January a moderately wet month (the 4th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 10 h 58 min on an average January day.

The nearest other city in this atlas is Pingxiang, China (27 km away). In January its highs average 16.4°C, 0.8°C cooler than Lạng Sơn, with 39 mm of rain.

Among the 136 cities listed in Vietnam, Lạng Sơn ranks joint 135th of 136 for the warmest January highs and 107th of 136 for the driest January (rainfall, lowest first). The mean January high of those 136 cities is 24.8°C; Lạng Sơn is 7.6°C cooler than that mean.

From January to February, average highs rise by 2.2°C to 19.4°C, and monthly rainfall falls from 57 mm to 44 mm.

The annual picture

January in context

30-year average

Average highAverage low°C

Monthly rainfall

Average total · mm

Averages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated

Every month, side by side

Lạng Sơn climate table

1991–2020

Monthly climate averages for Lạng Sơn, 1991–2020
Month	Average highHigh / low	Average low	Rainfall mm/month	Rain days ≥1 mm/day	Daylight hours/dayDaylight h/day
January, selected	17.2°C10.8°C	10.8°C	57	11.2	11.011 h
February	19.4°C12.6°C	12.6°C	44	10.2	11.411 h
March	22.8°C15.9°C	15.9°C	79	14.4	12.012 h
April	26.8°C19.8°C	19.8°C	97	14.8	12.613 h
May	29.0°C22.6°C	22.6°C	220	21.2	13.213 h
June	30.3°C24.4°C	24.4°C	257	23.6	13.413 h
July	30.3°C24.6°C	24.6°C	270	24.9	13.313 h
August	30.0°C24.1°C	24.1°C	285	25.2	12.913 h
September	28.8°C22.6°C	22.6°C	164	18.2	12.312 h
October	26.5°C19.6°C	19.6°C	75	10.8	11.712 h
November	23.2°C15.9°C	15.9°C	50	7.9	11.111 h
December	18.8°C11.8°C	11.8°C	45	8.2	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

January in nearby cities

Distance from Lạng Sơn

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 limits

How these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Lạng Sơn) is explained once on the Lạng Sơn year overview and on the Sources, method and limits page.