Weather in Siem Reap in December 2024
- December is usually the coldest month of the year in Siem Reap;
Average weather
Average temperature in Siem Reap in December
Going from a maximum of +91°F during the day to a minimum of +63°F during the night, the temperature in December averages around +88°F.
The average maximum temperature goes up 0% by the end of the month, compared with the beginning of the month, from +90°F to +90°F.
Is Siem Reap warm or cold in December?
Siem Reap is typically warm in December.
Maximum temperatures go down compared to the previous month from +88°F to +86°F. The minimum temperature also goes down from +73°F to +70°F.
It’s generally warm, but pack a long-sleeve shirt for evenings.
December is the coldest month in Siem Reap, here is the comparison with other months:
Climate in Siem Reap in December
| November | December | January | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +88°F | +86°F | +88°F | ||||
| Min. temperature | ||||||
| +61°F | +55°F | +57°F | ||||
| Max. temperature | ||||||
| +95°F | +95°F | +97°F | ||||
| Rainfall | ||||||
| 76 mm | 13 mm | 9 mm | ||||
| Wind | ||||||
| 1 m/s | 1 m/s | 1 m/s | ||||
| Humidity | ||||||
| 78% | 72% | 68% | ||||
| Air pressure | ||||||
| 1010 HPa | 1012 HPa | 1011 HPa | ||||
| Sunny days | ||||||
| 3 | 6 | 11 | ||||
| Cloudy days | ||||||
| 10 | 19 | 16 | ||||
| Rainy days | ||||||
| 17 | 6 | 5 | ||||
| Snowy days | ||||||
| 0 | 0 | 0 | ||||
December often has better weather than November. It’s getting colder in December. From +88°F in the day, the average maximum temperature lowers to +86°F. As December arrives, the amount of rainfall goes down. On average, the rainfall volume decreases from 76 mm to 13 mm. It feels drier, as humidity decreases from 78% to 72%. The average wind speed doesn’t change much during December, staying around 1 m/s. The good news is there are likely to be more sunny days in December, from 3 to 6.
But maybe it is worth considering traveling in January as the weather gets better.
Wind
The average wind speed is 2 m/s getting up to 4 m/s which is a light breeze; barely moving the tree leaves.
The average wind speed in Siem Reap is gradually increasing during December, going from 1 m/s to 1 m/s over the course of the month.
Rain
How was the weather last December in Siem Reap?
Climate Change Over the Years
The climate in Siem Reap in December has not changed that much over the last 43 years.
The average temperature was the lowest in 1999 (+88°F) and the highest in 2015 (+92°F). The driest year was 2015 with only 880 mm of rainfall, and the wettest year was 1999 with 1854 mm.
FAQ
Is December a good time to visit Siem Reap?
Can you sunbathe in Siem Reap in December?
Is Siem Reap rainy in December?
Is it sunny in Siem Reap in December?
Other cities in Cambodia
Monthly weather in Siem Reap
Source of the data
For this page, we’ve looked at the typical weather in Siem Reap, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.