January · Cambodia
Best time to visit Phnom Penh in January Weather, crowds & prices
Weather in Phnom Penh in January
Average temperature 26°C, 21 mm of rain, about 29 days with 6+ hours of sunshine and 72% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
January score
8.1/10
Ranked #1 of 12 months
- Avg temp
- 26°C
- Rainfall
- 21 mm
- Humidity
- 72%
- Days with 6h+ sun
- 29
- Crowd Density
- Peak Tourist Rush
- Average Expenses
- $$$ · Peak Season Rates ($$$)
January in Phnom Penh scores 8.1/10 for sightseeing and cultural travel - the single best month of the year. Expect around 26°C, 21 mm of rain, and roughly 29 days with 6+ hours of sunshine this month.
Phnom Penh pairs royal palaces and a riverfront with sobering museums of the Khmer Rouge years.
January in Phnom Penh tops the year's climate scores
Days in January average 26°C (79°F) and humidity near 72% — front-load outdoor plans before the heat builds and treat the middle of the day as indoor time.
With around 21 mm of rain, any showers tend to pass through rather than settle in; about 29 days with 6+ hours of sunshine and 11.5 hours of daylight fill the rest.
On our climate-comfort scale this is the top-ranked month of the year for Phnom Penh at 8.1/10 — the reference point every other month on this page is measured against.
Pack the lightest breathable clothing you own, a hat, and more water than feels necessary.
Budget for peak pricing, and this is one of the busiest months here. You are paying the year's highest rates for the year's best conditions — book early or shift a few weeks either side.
Frequently asked
- What is the weather like in Phnom Penh in January?
- In January, Phnom Penh averages 26°C, 21 mm of rain, and about 29 days with 6+ hours of sunshine. Its climate-comfort score is 8.1/10.
- Is January a good time to visit Phnom Penh?
- January earns a 8.1/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in Phnom Penh in January?
- Expect about 21 mm of rain in January. Average humidity is 72% and there are about 29 days with 6+ hours of sunshine.
Curated in Phnom Penh
Tickets & experiences
Things to do in Phnom Penh
Phnom Penh, Cambodia. Live activities and tours from GetYourGuide, matched to this destination.