Phnom Penh Weather in January
Phnom Penh in January sees very high temperatures, with highs around 34°C (93°F) and overnight lows of 23°C (73°F). Around 17 mm (0.7 in) of rainfall is typical, so a light rain jacket is a sensible addition to your bag.
Rainfall in Phnom Penh in January
Historically, the month has about a single day of rain, averaging 17 mm (0.7 in) in total. If rain does fall, it tends to arrive as a fairly heavy shower rather than light drizzle.
Temperature in Phnom Penh in January
January in Phnom Penh sees highs of 34°C (93°F) and lows of 23°C (73°F) overnight. The hottest part of the day is usually in the afternoon, so lighter clothing can help you stay comfortable. Nights are warm at 23°C (73°F). It's worth making sure your accommodation has decent ventilation or air conditioning.
Sunshine in Phnom Penh in January
Enjoy a sunny month with about 258 hours of sunshine, the clear skies make Phnom Penh even more beautiful.
Wind Speed in Phnom Penh in January
Wind speeds average 2 m/s (4 knots) during January. At this speed, expect light breezes that you can feel on your face and cause leaves to rustle gently. Since this is an average, some days are calmer with barely any wind while others have more noticeable gentle breezes.January in Phnom Penh has its charm, but if you're looking for destinations with pleasant temperatures and sunny skies, our weather planner can help you explore other options in the world.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Cambodia, check out our Phnom Penh's climate page.
Phnom Penh Temperature in January
Min Temperature
23°C (73°F)
Max Temperature
34°C (93°F)
Chance of Rain
5%
Precipitation
17 mm (0.7 in)
Rainy days
a single day
Humidity
72%
Windspeed
2 m/s (4 knots)
Sunshine
258 hours
Percentage Sunshine
Daily Historical Temperatures
30-year average (1996-2026)
Based on our historical records, temperatures in Phnom Penh typically stay consistent throughout January, with daily highs averaging around 34°C (93°F). Nights are warm, with lows around 23°C (73°F).
Average temperatures in January
Historical weather for Phnom Penh in January
Browse day-by-day weather records for Phnom Penh spanning 38 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Phnom Penh historical weather extremes in January
Based on 27 years of weather observations in Phnom Penh between 1998 and 2025, these are the recorded extremes.
- The hottest January day on record in Phnom Penh reached 39°C (102°F) (January 20, 2025).
- Phnom Penh experienced its chilliest January day on January 13, 2003, reaching only 19°C (66°F).
- The lowest overnight temperature recorded in January was 16°C (61°F) (January 24, 2014).
Best Places in Cambodia in January
Find out more about the weather in Cambodia and which places have the best travel conditions in this month. See all of Cambodia in January →
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What to Wear in Phnom Penh in January
Get ready for hot weather in January! Lightweight, breathable fabrics are your best friend during this month. Cotton and linen shirts, shorts, sundresses, and sandals will keep you comfortable. Light colors help reflect the heat, avoid wearing black. Almost no rain is expected, so no need to bring rain gear. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.What To Do in Phnom Penh in January
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Cambodia, check out our Phnom Penh's climate page.
Temperature Rainfall Sunshine Humidity Wind Speed
See the full Phnom Penh climate overview or explore weather in Cambodia.
