Climate averages 1991–2020

Ðông Hà weather
in September.

A hot, very wet month: the 5th warmest and the 10th driest of the year.

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

Average high 29.9°C Daytime mean, September

Average low 24.7°C Night-time mean, September

Rainfall 298 mm 20 days with ≥1 mm

Daylight 12 h Sunrise to sunset, per day

September is a hot month in Ðông Hà: daytime highs average 29.9°C and nights cool to about 24.7°C. By daytime temperature it is the 5th warmest of the 12 months.

Expect about 298 mm of rain on roughly 20 days, which makes September a very wet month (the 10th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 15 min on an average September day.

The nearest other city in this atlas is Phong Điền (Thua Thien Hue Province), Vietnam (38 km away). In September its highs average 29.5°C, about as warm as Ðông Hà, with 349 mm of rain.

Among the 136 cities listed in Vietnam, Ðông Hà ranks joint 75th of 136 for the warmest September highs and 107th of 136 for the driest September (rainfall, lowest first). The mean September high of those 136 cities is 29.7°C; Ðông Hà is 0.3°C warmer than that mean.

From September to October, average highs fall by 2.8°C to 27.1°C, and monthly rainfall rises from 298 mm to 449 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

Ðông Hà climate table

1991–2020

Monthly climate averages for Ðông Hà, 1991–2020
Month	Average highHigh / low	Average low	Rainfall mm/month	Rain days ≥1 mm/day	Daylight hours/dayDaylight h/day
January	22.7°C18.6°C	18.6°C	135	18.2	11.211 h
February	24.1°C19.2°C	19.2°C	84	13.6	11.612 h
March	26.7°C21.0°C	21.0°C	88	13.6	12.012 h
April	29.5°C23.1°C	23.1°C	89	14.2	12.513 h
May	31.6°C25.0°C	25.0°C	134	18.6	12.913 h
June	33.2°C26.6°C	26.6°C	71	10.8	13.113 h
July	33.1°C26.6°C	26.6°C	99	12.2	13.013 h
August	32.2°C26.1°C	26.1°C	128	14.8	12.713 h
September, selected	29.9°C24.7°C	24.7°C	298	20.3	12.212 h
October	27.1°C23.1°C	23.1°C	449	24.2	11.812 h
November	25.3°C21.7°C	21.7°C	400	22.4	11.411 h
December	22.8°C19.7°C	19.7°C	293	22.3	11.111 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 Ðông Hà

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 Ðông Hà) is explained once on the Ðông Hà year overview and on the Sources, method and limits page.