Climate averages 1991–2020

Đồng Hới weather
in December.

A warm, very wet month: the 11th warmest and the 9th driest of the year.

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

Average high 22.0°C Daytime mean, December
Average low 19.4°C Night-time mean, December
Rainfall 228 mm 20 days with ≥1 mm
Daylight 11 h Sunrise to sunset, per day
Every month in Đồng Hới · average highYear overview

December is a warm month in Đồng Hới: daytime highs average 22.0°C and nights cool to about 19.4°C. By daytime temperature it is the 11th warmest of the 12 months.

Expect about 228 mm of rain on roughly 20 days, which makes December a very wet month (the 9th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 11 h 06 min on an average December day.

The nearest other city in this atlas is Ba Đồn (38 km away). In December its highs average 21.8°C, about as warm as Đồng Hới, with 213 mm of rain.

Among the 136 cities listed in Vietnam, Đồng Hới ranks joint 83rd of 136 for the warmest December highs and 120th of 136 for the driest December (rainfall, lowest first). The mean December high of those 136 cities is 25.0°C; Đồng Hới is 3.0°C cooler than that mean.

From December to January, average highs fall by 0.6°C to 21.5°C, and monthly rainfall falls from 228 mm to 125 mm.

The annual picture

December in context

30-year average
Average highAverage low°C
Average daily high and low temperatures by month The same values are available in the monthly table below. Lines show mean daily maxima and minima, not a forecast interval. 1520253035 JanFebMarAprMayJunJulAugSepOctNovDec

Monthly rainfall

Average total · mm
Average monthly rainfall totalsEach bar is a mean monthly total over 1991–2020. Full numbers are in the table. JanFebMarAprMayJunJulAugSepOctNovDec 5500

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
MonthAverage highHigh / lowAverage lowRainfall mm/monthRain days ≥1 mm/dayDaylight hours/dayDay­light h/day
January 21.5°C18.3°C18.3°C12517.411.211 h
February 22.6°C18.9°C18.9°C7713.911.612 h
March 25.1°C20.9°C20.9°C8213.312.012 h
April 28.3°C23.4°C23.4°C8812.812.513 h
May 30.9°C25.8°C25.8°C11214.612.913 h
June 32.7°C27.4°C27.4°C638.113.213 h
July 32.4°C27.1°C27.1°C9410.013.113 h
August 31.6°C26.7°C26.7°C14613.412.713 h
September 29.4°C25.5°C25.5°C34519.512.212 h
October 26.8°C23.7°C23.7°C53124.011.812 h
November 24.8°C22.0°C22.0°C36620.911.311 h
December, selected 22.0°C19.4°C19.4°C22820.311.111 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

December 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.