Climate averages 1991–2020

Đồng Hới weather
in January.

A mild, wet month: the coolest and the 7th driest of the year.

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

Average high 21.5°C Daytime mean, January

Average low 18.3°C Night-time mean, January

Rainfall 125 mm 17 days with ≥1 mm

Daylight 11 h Sunrise to sunset, per day

January is a mild month in Đồng Hới: daytime highs average 21.5°C and nights cool to about 18.3°C. By daytime temperature it is the coolest month of the year.

Expect about 125 mm of rain on roughly 17 days, which makes January a wet month (the 7th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 11 h 12 min on an average January day.

The nearest other city in this atlas is Ba Đồn (38 km away). In January its highs average 21.3°C, about as warm as Đồng Hới, with 128 mm of rain.

Among the 136 cities listed in Vietnam, Đồng Hới ranks joint 84th of 136 for the warmest January highs and 123rd of 136 for the driest January (rainfall, lowest first). The mean January high of those 136 cities is 24.8°C; Đồng Hới is 3.3°C cooler than that mean.

From January to February, average highs rise by 1.1°C to 22.6°C, and monthly rainfall falls from 125 mm to 77 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

Đồng Hới climate table

1991–2020

Monthly climate averages for Đồng Hới, 1991–2020
Month	Average highHigh / low	Average low	Rainfall mm/month	Rain days ≥1 mm/day	Daylight hours/dayDaylight h/day
January, selected	21.5°C18.3°C	18.3°C	125	17.4	11.211 h
February	22.6°C18.9°C	18.9°C	77	13.9	11.612 h
March	25.1°C20.9°C	20.9°C	82	13.3	12.012 h
April	28.3°C23.4°C	23.4°C	88	12.8	12.513 h
May	30.9°C25.8°C	25.8°C	112	14.6	12.913 h
June	32.7°C27.4°C	27.4°C	63	8.1	13.213 h
July	32.4°C27.1°C	27.1°C	94	10.0	13.113 h
August	31.6°C26.7°C	26.7°C	146	13.4	12.713 h
September	29.4°C25.5°C	25.5°C	345	19.5	12.212 h
October	26.8°C23.7°C	23.7°C	531	24.0	11.812 h
November	24.8°C22.0°C	22.0°C	366	20.9	11.311 h
December	22.0°C19.4°C	19.4°C	228	20.3	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

January in nearby cities

Distance from Đồng Hới

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 Đồng Hới) is explained once on the Đồng Hới year overview and on the Sources, method and limits page.