Climate averages 1991–2020

Bắc Từ Liêm weather
in September.

A hot, very wet month: the 5th warmest and the joint 8th driest of the year.

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

Average high 30.2°C Daytime mean, September

Average low 24.0°C Night-time mean, September

Rainfall 226 mm 19 days with ≥1 mm

Daylight 12 h Sunrise to sunset, per day

September is a hot month in Bắc Từ Liêm: daytime highs average 30.2°C and nights cool to about 24.0°C. By daytime temperature it is the 5th warmest of the 12 months.

Expect about 226 mm of rain on roughly 19 days, which makes September a very wet month (the joint 8th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 17 min on an average September day.

The nearest other city in this atlas is Tây Hồ (7 km away). In September its highs average 30.3°C, about as warm as Bắc Từ Liêm, with 226 mm of rain.

Among the 136 cities listed in Vietnam, Bắc Từ Liêm ranks joint 42nd of 136 for the warmest September highs and joint 23rd of 136 for the driest September (rainfall, lowest first). The mean September high of those 136 cities is 29.7°C; Bắc Từ Liêm is 0.5°C warmer than that mean.

From September to October, average highs fall by 2.1°C to 28.1°C, and monthly rainfall falls from 226 mm to 121 mm.

The annual picture

September 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

Bắc Từ Liêm climate table

1991–2020

Monthly climate averages for Bắc Từ Liêm, 1991–2020
Month	Average highHigh / low	Average low	Rainfall mm/month	Rain days ≥1 mm/day	Daylight hours/dayDaylight h/day
January	19.4°C13.6°C	13.6°C	40	7.7	11.011 h
February	21.5°C15.2°C	15.2°C	27	6.8	11.411 h
March	24.7°C18.1°C	18.1°C	52	9.6	12.012 h
April	28.7°C21.5°C	21.5°C	100	11.1	12.613 h
May	31.0°C24.2°C	24.2°C	232	17.5	13.113 h
June	32.4°C25.9°C	25.9°C	226	18.3	13.413 h
July	32.1°C25.9°C	25.9°C	259	20.4	13.313 h
August	31.3°C25.3°C	25.3°C	314	22.5	12.913 h
September, selected	30.2°C24.0°C	24.0°C	226	18.7	12.312 h
October	28.1°C21.5°C	21.5°C	121	11.9	11.712 h
November	24.8°C17.9°C	17.9°C	57	7.2	11.211 h
December	20.8°C14.1°C	14.1°C	33	6.6	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

September in nearby cities

Distance from Bắc Từ Liêm

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 Bắc Từ Liêm) is explained once on the Bắc Từ Liêm year overview and on the Sources, method and limits page.

Hanoi and Tây Hồ lie in the same rainfall cell, so their rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.