December weather forecast
Vinh Long, Vietnam

Finally, December ushers in a significant change in Vinh Long, wrapping up the year by offering a respite from the preceding months of rainfall. This marked decrease in rainfall, averaging at 15mm (0.59"), points towards the drier months to come. A steady decline in average cloud cover brings longer hours of sunlight impacting positively on day temperatures. With the shift into January, weather patterns suggest a full circle return to similar climatic characteristics that were observed at the beginning of the year. Despite the drop in rain, the wind speed fluctuates around 10km/h (6.2mph), creating a coolness in the atmosphere that is comfortable and welcoming.

Temperature

In Vinh Long, the lowest average temperatures are observed in December, with a high of 30.8°C (87.4°F) and a low of 22.8°C (73°F).

Heat index

The heat index value during December is calculated to be a torrid 39°C (102.2°F). Additional precautions are required to avert heat cramps and heat exhaustion. Persistent activity may culminate in heatstroke.
From a standpoint of the heat index, values pertain to shaded conditions and mild breezes. Exposing to direct sunshine may enhance heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. One's perception of weather can be shaped by other factors, involving metabolic differences, pregnancy, and physical exertion. Take note that direct exposure to the sun can increase the felt temperature, possibly adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are especially vital to children. Young individuals usually face greater risks than adults as their sweat production is less. Also, their larger skin surface relative to their small bodies and the high heat generation due to their activity contributes to their vulnerability.
The evaporation of sweat is a natural cooling mechanism of the human body, facilitated by perspiration. Under high air temperature and humidity (high heat index) conditions, perspiration is limited, and the perception of heat is increased. Heat-related disorders may develop if heat gain in the body overshadows its cooling capacity, leading to elevated temperatures.

Humidity

In December, the average relative humidity is 76%.

Rainfall

In Vinh Long, in December, during 7.5 rainfall days, 15mm (0.59") of precipitation is typically accumulated. Throughout the year, there are 159.5 rainfall days, and 359mm (14.13") of precipitation is accumulated.

Daylight

December has the shortest days of the year, with an average of 11h and 30min of daylight.
On the first day of the month, sunrise is at 05:57 and sunset at 17:32. On the last day of December, sunrise is at 06:12 and sunset at 17:45 +07.

Sunshine

December has the least sunshine of the year, with an average of 6.4h of sunshine.

UV index

The months with the highest UV index are January through December, with an average maximum UV index of 7. January through December, with an average maximum UV index of 7, are months with the lowest UV index. A UV Index of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: In December, a daily UV index of 7 turns into the following recommendations:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. Between 10 a.m. and 4 p.m., the Sun's UV radiation is at its peak. Limit your exposure to direct sunlight during these hours. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays.