Country Overview For Vietnam
The climate in Vietnam is typically tropical in south; monsoonal in north with hot, rainy season (May to September) and warm, dry season (October to March). The terrain: low, flat delta in south and north; central highlands; hilly, mountainous in far north and northwest. For Hanoi in January the daily average maximum temperatures is 20°C with the average minimum 15°C, while in June the average maximum is 33°C with a minimum of 26°C. The wettest month for Hanoi is August with an average of 247.6mm of precipitation falling while the driest month is January with 17.9mm falling.
HISTORICAL MONTHLY AVERAGES FOR DECEMBER
The information presented below gives detailed historical monthly average weather conditions along with exceptional weather occurrences. To maintain relevance to current weather trends the displayed information has been calculated using data collected over the past two decades. The climate profile is taken from closest available data source to Hoi An.
Throughout the month of December daytime temperatures will generally reach highs of around 24°C that's about 75°F. At night the average minimum temperature drops down to around 18°C, that's 64°F.
In recent times the highest recorded temperature in December has been 30°C that's 86°F, with the lowest recorded temperature 5°C, about 41°F.
The average daily relative humidity for December is around 85%.
The Heat Index is a measure of how hot it feels when relative humidity is added to actual air temperature. From this a comfort level is calculated providing categories on how heat conditions might adversely affect someone.
Comfort Levels: Given average maximum temperatures and humidity levels generally you should not anticipate any discomfort from heat (see heat index for more information).
The average monthly amount of precipitation has been recorded at around 214 mm, that's 8 inches. Throughout the month you can expect to see rain or drizzle falling on 20 days of the month.
The average daily wind speed in December has been around 7 km/h, that’s the equivalent to about 4 mph, or 4 knots. In recent years the maximum sustained wind speed has reached 43 km/h, that’s the equivalent of around 26 mph, or 23 knots.
On average the month of December is not affected by foggy conditions.
YEARLY TRENDS: WEATHER AVERAGES & EXTREMES
The following charts show yearly weather trends with information on monthly weather averages and extremes.
The chart below plots the average high and low temperature for each month of the year. It also shows the maximum and minimum recorded temperatures.
The chart below plots the average monthly precipitation amount.
The chart below plots the average number of days in any month that you can expect to see rain falling.
The chart below plots the average daily wind speed you can expect for any month. It also shows the maximum recorded sustained wind speed for each month.