30YearWeather
Phnom Penh in January
Phnom Penh weather in January - Cambodia
☀️Hot & Sunny

Phnom Penh Weather in January

Plan your January trip to Phnom Penh, Cambodia. Based on 30 years of NASA data, expect temperatures of 32°C (high) to 23°C (low), with 4% rain probability and 8 hours of daily sunshine. Great conditions with only 0 rainy days expected.

Avg High
32°C

Hottest around day 26

Avg Low
23°C

Coolest around day 14

Rainy Days
0days

4% avg rain chance

Sunshine
8hrs/day

Winter season

Phnom Penh January Weather Calendar

Click any day to see detailed weather information

Day 1
clear-day
Sunny
31°C2%
Day 2
clear-day
Sunny
31°C2%
Day 3
clear-day
Sunny
31°C2%
Day 4
clear-day
Sunny
31°C2%
Day 5
clear-day
Sunny
31°C3%
Day 6
clear-day
Sunny
31°C3%
Day 7
clear-day
Sunny
31°C4%
Day 8
clear-day
Sunny
31°C5%
Day 9
clear-day
Sunny
31°C7%
Day 10
clear-day
Sunny
31°C6%
Day 11
clear-day
Sunny
31°C7%
Day 12
clear-day
Sunny
31°C7%
Day 13
clear-day
Sunny
31°C5%
Day 14
clear-day
Sunny
31°C3%
Day 15
clear-day
Sunny
31°C5%
Day 16
clear-day
Sunny
32°C5%
Day 17
clear-day
Sunny
31°C6%
Day 18
clear-day
Sunny
32°C6%
Day 19
clear-day
Sunny
32°C6%
Day 20
clear-day
Sunny
32°C4%
Day 21
clear-day
Sunny
32°C4%
Day 22
clear-day
Sunny
32°C3%
Day 23
clear-day
Sunny
32°C3%
Day 24
clear-day
Sunny
32°C3%
Day 25
clear-day
Sunny
32°C3%
Day 26
clear-day
Sunny
32°C2%
Day 27
clear-day
Sunny
32°C3%
Day 28
clear-day
Sunny
32°C4%
Day 29
clear-day
Sunny
32°C6%
Day 30
clear-day
Sunny
32°C6%
Day 31
clear-day
Sunny
32°C6%

Essential Travel Info for Phnom Penh

🗓️ Best Time to Visit📖 Travel Guide🍴 Food Guide

Currency

KHR

៛ Cambodian riel

Language

Khmer

Driving

Right side

Connect

Cheap SIM cards from US$2 for GSM phones...

Safety

High Safety

GPI: 1.882

Travel Intelligence

Exclusive flight analytics & health data for Phnom Penh

Smart Flight Estimator

Airport-to-Airport Logistics

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Flight Connectivity Analysis

Airport traffic data & seasonal patterns

Low Traffic
24/ 100
Traffic Index

Quieter airport

Peak Daily Arrivals

0

slots per day

Peak

Jul

Low

Dec

Monthly Traffic Distribution

48
Jan
48
Feb
48
Mar
48
Apr
48
May
57
Jun
59
Jul
58
Aug
48
Sep
48
Oct
52
Nov
17
Dec
Traffic Level
Low Season

Key Connections

Guangzhou Baiyun (CAN)
Bangkok Suvarnabhumi (BKK)
Kuala Lumpur (KUL)
Bangkok Don Mueang (DMK)
Taipei Taiwan Taoyuan (TPE)

Health & Safety Advisory

CDC travel health recommendations

10 Recommendations
COVID-19

All eligible travelers should be up to date with their COVID-19 vaccines. Please seeYour COVID-19 Vaccinationfor more information.

Chikungunya

All travelers should take steps to prevent mosquito bites. Chikungunya vaccination is generally not recommended. Travelers who wish to consider vaccination can visit “What to consider before traveling” on thechikungunya vaccinespage to learn more.

Hepatitis A

Recommended for unvaccinated travelers one year old or older going to Cambodia.Infants 6 to 11 months old should also be vaccinated against Hepatitis A. The dose does not count toward the routine 2-dose series.Travelers allergic to a vaccine component should receive a single dose of immune globulin, which provides effective protection for up to 2 months depending on dosage given.Unvaccinated travelers who are over 40 years old, are immunocompromised, or have chronic medical conditions planning to depart to a risk area in less than 2 weeks should get the initial dose of vaccine and at the same appointment receive immune globulin.

Hepatitis B

Recommended for unvaccinated travelers younger than 60 years old traveling to Cambodia. Unvaccinated travelers 60 years and older may get vaccinated before traveling to Cambodia.

Japanese Encephalitis

Recommended for travelers whoAre moving to an area with Japanese encephalitis to liveSpend long periods of time, such as a month or more, in areas with Japanese encephalitisFrequently travel to areas with Japanese encephalitisConsider vaccination for travelersSpending less than a month in areas with Japanese encephalitis but will be doing activities that increase risk of infection, such as visiting rural areas, hiking or camping, or staying in places without air conditioning, screens, or bed netsGoing to areas with Japanese encephalitis who are uncertain of their activities or how long they will be thereNot recommended for travelers planning short-term travel to urban areas or travel to areas with no clear Japanese encephalitis season.

Malaria

CDC recommends that travelers going to certain areas of Cambodia take prescription medicine to prevent malaria. Depending on the medicine you take, you will need to start taking this medicine multiple days before your trip, as well as during and after your trip. Talk to your doctor about which malaria medication you should take.Transmission areasPrimarily isolated to pockets in rural and forested areasRare cases in non-forested areasNo (or negligible) malaria transmission in the cities of Phnom Penh (the capital) and Siem ReapNo (or negligible) malaria transmission at the main temple complex at Angkor WatDrug resistanceChloroquine and mefloquineSpeciesP. vivax(95%)P. falciparum(5%)P. malariaeandP. knowlesi6(rare)Recommended chemoprophylaxisRural and forested areas: Atovaquone-proguanil, doxycycline, primaquine5, tafenoquine2Areas with rare cases: No chemoprophylaxis recommended (insect bite precautions and mosquito avoidance only)4Updated April 23, 2025See footnotes

+4 more

Source: CDC Travelers' Health

View Complete Health Guide

Is January a Good Time to Visit Phnom Penh?

👌Good option with minor considerations
Short Answer

Phnom Penh in January tests even seasoned travelers: 32°C daytime temperatures and 65% humidity mean early mornings or evenings are your best windows for sightseeing.

Decision Factors

Vaccinations required

Yellow Fever

Feels significantly hotter than 31.5°C

Heat index: 37°C due to 65% humidity

Excellent dry conditions

Only 4% rain probability - ideal for outdoor activities

Health precautions needed

Be aware of: Leptospirosis, Melioidosis, Schistosomiasis

Plenty of sunshine

10h of sunshine daily

Shoulder season - balanced conditions

81% of peak - good value with moderate crowds

Good For

  • 💑
    Honeymoon couples

    Wedding score 99/100 with romantic weather conditions

  • 💼
    Business travelers

    Climate-controlled meetings unaffected by weather

Who Should Avoid

  • 👴
    Elderly travelers

    Heat index of 37°C poses health risks

  • 🌡️
    Heat-sensitive visitors

    37°C feels-like temperature creates discomfort

Related Guides

Best Time to VisitWhen to AvoidPhnom Penh Overview
930 observations30-year historical data
Confidence: 95%

"According to 30YearWeather's analysis of 30 years of NASA POWER satellite data,Phnom Penh in January averages 32°C with 4% precipitation probability."

📊 Source: 30YearWeather.com🛰️ Data: NASA POWER (1991-2021)View Methodology →

Frequently Asked Questions: Phnom Penh in January

What are the temperatures in Phnom Penh in January?

Daytime highs average 32°C, nights drop to 23°C. Temperatures remain fairly consistent.

How many rainy days in Phnom Penh in January?

Expect around 0 days with measurable rainfall. Rain is unlikely to disrupt plans.

What to wear in Phnom Penh in January?

Light, breathable fabrics. Don't forget sunglasses and a hat.

Is January peak season in Phnom Penh?

This is shoulder season—moderate prices and manageable crowds.