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Weather in Cambodia in January – is it worth traveling to?

Is the weather pleasant in Cambodia? See historical weather data for January to see if it meets your needs.
Check flight prices to Cambodia on Avionero:
January

Is the weather good in Cambodia in January 2026?

Great Weather
Hot
☁️
Cloudy

For the past few decades, the average daily temperatures in Cambodia during January have been around +88°F.

In Cambodia the temperature rarely varies more than seven degrees between the different parts with the highest temperature +88°F in Phnom Penh to +84°F in Sihanoukville. So you should be able to pack for similar conditions wherever you go in the country.

Temperature, wind and humidity in January

Average
Phnom Penh
Siem Reap
Sihanoukville
☀️
+88°F
Avg. max. temperature
+57°F
Min.
+97°F
Max.
16 mm
Total precipitation
70%
Avg. humidity
1 m/s
Avg. wind
7 ☀️
Sunny Days
15 ⛅️
Cloudy
9 🌦
Rainy
Our opinion: Cambodia has great weather in January.
Cambodia in January – what city is the…
  • rainiest? Sihanoukville, with an average of 1 mm of rain and humidity of 76%;
  • warmest? Phnom Penh, with daytime temperatures averaging +90°F;
  • windiest? Sihanoukville, with an average of 2 m/s;
  • coolest? Sihanoukville, with daytime temperatures averaging +84°F;

How good is the weather in Cambodia in January?

During January, the Cambodia offers great weather: average air pressure of around 1008 HPa, 11 sunny days and as little as 168 mm in precipitation and 5 rainy days. The humidity, of course, varies depending on whether you're near the coast, inland, or up in the mountains – in January the range is between 67% in Phnom Penh and 76% in Sihanoukville.

How warm is it in Cambodia during January?

There is rarely a shortage of sun in Cambodia and heat during January – a country to travel to thaw out in daytime temperatures around +88°F degrees.

This is how hot it usually is in January

The average daily temperatures above don't tell you everything about how hot it can be in Cambodia. For example, cold nights can make a big difference for those staying in tents or unheated houses. Extra hot days, on the other hand, can make a big difference for those who plan to engage in demanding physical training or competition. So here are some more temperatures for January:
Average
Phnom Penh
Siem Reap
Sihanoukville
  • Average maximum temperature for the month: +88°F;
  • Average minimum temperature for the month: +73°F;
  • Highest monthly temperature: +88°F;
  • Lowest monthly temperature: +73°F;

Monthly temperatures:

Average
Phnom Penh
Siem Reap
Sihanoukville
  • Warmest: April with an average +93°F during the day;
  • Coldest: September with an average +86°F of the day;
  • Hottest month in hottest city: April in Phnom Penh;
  • Coldest month in coolest city: July in Sihanoukville;

Winds in Cambodia during January

Wind speed in Cambodia in January based on historical data:
Average
Phnom Penh
Siem Reap
Sihanoukville

January tends to offer light winds averaging 2 m/s. However, coastal cities may experience breezes during the mornings and afternoons.

Comparison between cities in January:

  • Highest average wind speed: Sihanoukville with 3 m/s;
  • Lowest average wind speed: Siem Reap with 1 m/s;
  • Windiest day of the month: Sihanoukville with 2 m/s;
  • The least windy day of the month: Phnom Penh with 1 m/s;

Humidity and precipitation in Cambodia in January

Amount of rainfall in mm during January in Cambodia based on historical data:
Average
Phnom Penh
Siem Reap
Sihanoukville
January tends to be an extremely humid month with 76% humidity and 168 mm rainfall. In general the humidity tends to be a little lower in mountainous regions and more humid closer to water.

Comparison between cities in January:

Average
Phnom Penh
Siem Reap
Sihanoukville
  • Highest average rainfall: Sihanoukville with 25 mm;
  • Lowest average rainfall: Siem Reap with 8 mm;
  • Most number of rainy days: Sihanoukville with 17 rainy days;
  • Least number of rainy days: Siem Reap with 5 rainy days;
  • Highest risk of rain during the day: Sihanoukville with 55%;
  • Least risk of rain during the day: Siem Reap with 16%;
  • Highest average humidity: Sihanoukville with 76%;
  • Lowest average humidity: Phnom Penh with 67%;

Tips for traveling to Cambodia in January

Looking for some tips for traveling to the sun, snow, or whatever you're aiming for Cambodia? Activities, weather, and clothing are closely linked. In addition, it's important to pack only what you really need so you don't have to worry about heavy packing or paying extra baggage fees.

Here is some advice on what to pack and what kind of activities you can do in the Cambodia based on the weather that January is expected to bring. The advice applies to the country as a whole – local weather and possible activities may differ somewhat.

rainy, hot weather with light winds and very high humidity in January
Avionero

Pack right for January

The weather makes a difference when it comes to packing - especially which items should go in your suitcase. The tips below are designed to help you pack light and right without carrying more than necessary.
  • For light showers, an umbrella or a thin and light rain cape is usually sufficient, while more rain may require rainwear and rain boots.
  • Long, hot days bring risks - weather like this is one of the most challenging things we can do to our bodies. It's best to avoid going to Cambodia when it's so hot. Secondly, keep cool by staying in the shade, the pool or in an air-conditioned room. Pack clothes for the sun, for swimming but also for hydration.
  • Light winds are probably most comfortable in hot weather but is cooling in cool and cold weather. If it is hot (when the air temperature is about 30 degrees), the wind can have a warming effect. A thin, windproof jacket and long trousers help to counteract these effects.
  • High humidity means that the air conducts heat to and from the skin more easily. For example, if the air is hot (above skin temperature), it will be harder to stay cool. On the other hand, if the air is cool or cold, it is more difficult to stay warm. In high humidity, the choice of clothing makes less of a difference. However, your physical activity plays a bigger role.

FAQ

Frequently asked questions about the weather in Cambodia in January:

What can you do outside when it's warm in Cambodia?

Bathing and sunbathing can be suitable. Warm (but not hot) days are also good for activities that are not so physically demanding: sightseeing on foot, by boat, on a scooter, camel riding. You can also exercise easily as long as you make sure to cool down and quench thirst.

Is January a good time to visit Cambodia?

Yes, January is a great time to go to Cambodia, the weather couldn’t be better, so be ready to be outside to explore and enjoy. Check other months when is a good time to visit Cambodia.

Monthly weather in Cambodia

Source of the data

For this page, we’ve looked at the typical weather in Cambodia, 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.