Climate averages 1991–2020

Lào Cai weather
in August.

A hot, very wet month: the 3rd warmest and the wettest of the year.

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

Average high 31.2°C Daytime mean, August

Average low 24.5°C Night-time mean, August

Rainfall 268 mm 22 days with ≥1 mm

Daylight 13 h Sunrise to sunset, per day

August is a hot month in Lào Cai: daytime highs average 31.2°C and nights cool to about 24.5°C. By daytime temperature it is the 3rd warmest of the 12 months.

Expect about 268 mm of rain on roughly 22 days, which makes August a very wet month (the wettest month of the year). Daylight, from sunrise to sunset, lasts about 12 h 54 min on an average August day.

The nearest other city in this atlas is Bắc Quang (92 km away). In August its highs average 31.6°C, about as warm as Lào Cai, with 383 mm of rain.

Among the 136 cities listed in Vietnam, Lào Cai ranks joint 48th of 136 for the warmest August highs and joint 70th of 136 for the driest August (rainfall, lowest first). The mean August high of those 136 cities is 30.5°C; Lào Cai is 0.7°C warmer than that mean.

From August to September, average highs fall by 1.4°C to 29.8°C, and monthly rainfall falls from 268 mm to 165 mm.

The annual picture

August 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

Lào Cai climate table

1991–2020

Monthly climate averages for Lào Cai, 1991–2020
Month	Average highHigh / low	Average low	Rainfall mm/month	Rain days ≥1 mm/day	Daylight hours/dayDaylight h/day
January	18.9°C12.1°C	12.1°C	96	18.1	10.911 h
February	21.4°C13.3°C	13.3°C	88	17.1	11.411 h
March	25.5°C16.7°C	16.7°C	126	19.0	12.012 h
April	29.3°C20.6°C	20.6°C	129	17.6	12.713 h
May	31.1°C23.5°C	23.5°C	199	19.7	13.213 h
June	31.8°C25.1°C	25.1°C	242	22.0	13.513 h
July	31.3°C24.8°C	24.8°C	261	23.2	13.413 h
August, selected	31.2°C24.5°C	24.5°C	268	22.4	12.913 h
September	29.8°C23.5°C	23.5°C	165	18.1	12.312 h
October	26.9°C21.2°C	21.2°C	118	16.6	11.612 h
November	23.9°C17.2°C	17.2°C	88	13.8	11.111 h
December	20.0°C13.2°C	13.2°C	92	14.1	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

Distance from Lào Cai

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 Lào Cai) is explained once on the Lào Cai year overview and on the Sources, method and limits page.