December weather forecast
Hoi An, Vietnam

December sees a significant drop in rainfall to 206mm (8.11"), signaling the end of the monsoon season. Despite the change in weather, temperatures remain fairly warm for the first part of winter. Longer daylight hours offer an opportunity to indulge in outdoor activities. As the year rounds off, Hoi An dons a festive mood making it an excellent time to experience Vietnamese culture.

Temperature

The introduction of December notes a subtle temperature variation to a still moderately hot 26°C (78.8°F) from November's 27°C (80.6°F). During December, Hoi An's temperature falls to a steady low-temperature average of 20°C (68°F).

Rainfall

In Hoi An, during December, the rain falls for 5 days and regularly aggregates up to 206mm (8.11") of precipitation. In Hoi An, during the entire year, the rain falls for 144 days and collects up to 1929mm (75.94") of precipitation.

Daylight

With an average of 11h and 12min of daylight, December has the shortest days of the year.
On the first day of December, sunrise is at 05:58 and sunset at 17:13. On the last day of the month, sunrise is at 06:13 and sunset at 17:25 +07.

Sunshine

The months with the most sunshine in Hoi An are January through May and December, with an average of 7h of sunshine.

UV index

January, November and December, with an average maximum UV index of 9, are months with the lowest UV index. A UV Index reading of 8 to 10 represents a very high health vulnerability from unprotected exposure to Sun's UV rays for the average person.
Note: A daily maximum UV index of 9 in December translates into the following instructions:
Always be cautious. Skin and eyes can be affected swiftly without protection. Seek shade and limit direct Sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its peak, but be aware that not all shade structures provide complete sun protection. To cut down UV radiation exposure by about half, sport a wide-brim hat.