Climate averages 1991–2020

Ba Đồn weather
in September.

A hot, very wet month: the 5th warmest and the 11th driest of the year.

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

Average high 29.6°C Daytime mean, September

Average low 25.1°C Night-time mean, September

Rainfall 366 mm 20 days with ≥1 mm

Daylight 12 h Sunrise to sunset, per day

September is a hot month in Ba Đồn: daytime highs average 29.6°C and nights cool to about 25.1°C. By daytime temperature it is the 5th warmest of the 12 months.

Expect about 366 mm of rain on roughly 20 days, which makes September a very wet month (the 11th 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 Kỳ Anh (37 km away). In September its highs average 29.8°C, about as warm as Ba Đồn, with 312 mm of rain.

Among the 136 cities listed in Vietnam, Ba Đồn ranks joint 97th of 136 for the warmest September highs and 131st of 136 for the driest September (rainfall, lowest first). The mean September high of those 136 cities is 29.7°C; Ba Đồn is 0.1°C cooler than that mean.

From September to October, average highs fall by 2.6°C to 26.9°C, and monthly rainfall rises from 366 mm to 488 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

Ba Đồn climate table

1991–2020

Monthly climate averages for Ba Đồn, 1991–2020
Month	Average highHigh / low	Average low	Rainfall mm/month	Rain days ≥1 mm/day	Daylight hours/dayDaylight h/day
January	21.3°C17.5°C	17.5°C	128	17.2	11.211 h
February	22.9°C18.4°C	18.4°C	73	12.9	11.612 h
March	25.9°C20.6°C	20.6°C	69	11.7	12.012 h
April	29.2°C23.4°C	23.4°C	78	11.1	12.513 h
May	31.4°C25.8°C	25.8°C	103	13.5	13.013 h
June	33.0°C27.3°C	27.3°C	61	7.6	13.213 h
July	32.8°C27.0°C	27.0°C	106	9.2	13.113 h
August	31.8°C26.5°C	26.5°C	167	13.5	12.713 h
September, selected	29.6°C25.1°C	25.1°C	366	19.6	12.312 h
October	26.9°C23.2°C	23.2°C	488	23.3	11.812 h
November	24.8°C21.2°C	21.2°C	317	20.1	11.311 h
December	21.8°C18.5°C	18.5°C	213	19.4	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 Ba Đồn

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 Ba Đồn) is explained once on the Ba Đồn year overview and on the Sources, method and limits page.