Siem Reap Province · Cambodia

Siem Reap in January

In January, Siem Reap averages a daytime high of 32 °C and a night-time low of 21 °C, with about 3 mm of rain over the month. Siem Reap has no month that is both mild and dry by the measure used here.

Average high: 32 °C
Average low: 21 °C
Rain in the month: 3 mm
Daylight on 15 Jan: 11 h 30 min
Comfortable month: No
Places to stay: 263

When to go

How January compares with the rest of the year in Siem Reap

January is tied for the 6th warmest month in Siem Reap by average daytime high; across the year the highs run from 31 °C to 36 °C and the lows from 21 °C to 25 °C. By day, January is 1 °C warmer than December, and February is 2 °C warmer than January.

January brings 3 mm of rain, less than the monthly average of 118 mm (1419 mm a year); it is the driest month.

On 15 January the sun is up for about 11 h 30 min, against 11 h 20 min at the shortest and 12 h 50 min at the longest point of the year (calculated from the latitude, sunrise to sunset).

Average highAverage lowRain per monthComfortable months

Month	High	Low	Rain	Daylight
January	32 °C	21 °C	3 mm	11 h 30 min
February	34 °C	22 °C	10 mm	11 h 40 min
March	36 °C	24 °C	46 mm	12 h
April	36 °C	24 °C	75 mm	12 h 30 min
May	35 °C	25 °C	136 mm	12 h 50 min
June	34 °C	25 °C	170 mm	12 h 50 min
July	32 °C	25 °C	195 mm	12 h 50 min
August	32 °C	24 °C	229 mm	12 h 30 min
September	32 °C	24 °C	265 mm	12 h 10 min
October	31 °C	24 °C	220 mm	11 h 50 min
November	31 °C	23 °C	60 mm	11 h 30 min
December	31 °C	21 °C	10 mm	11 h 20 min

Comfortable means average daytime high between 18 °C and 29 °C and under 80 mm of rain in the month. Averages for 1991–2020 over the surrounding area, a grid square about 50 km across, so a coast or a nearby mountain can make the town itself warmer or cooler. Data: CRU TS v4.10, Climatic Research Unit, University of East Anglia (Open Database License).

When to go

Is January a good time to visit Siem Reap?

Not by the measure used here: the average high of 32 °C is above 29 °C. No month in Siem Reap meets it.

The measure is about weather for a city stay only; it says nothing about events, school holidays or prices.

Public holidays in Cambodia in January

Nationwide public holidays; shops and offices may close on these dates.

1 Jan 2026 · International New Year Day7 Jan 2026 · Day of Victory over the Genocidal Regime1 Jan 2027 · International New Year Day7 Jan 2027 · Day of Victory over the Genocidal Regime

Where to stay

Where to stay in Siem Reap

This guide lists 263 places to stay in Siem Reap, hotels recorded in Wikidata. By straight-line distance from the centre: under 1 km, 78; 1–3 km, 155; 3–10 km, 28; 10 km or more, 2.

Places to stay in Siem Reap Where to go in January Siem Reap day by day: January 2027

← Siem Reap in December Siem Reap in February →

Sources: climate from CRU TS v4.10 (Climatic Research Unit, University of East Anglia; Open Database License), 1991–2020 averages; day length calculated from the latitude; public holidays from python-holidays (MIT); places to stay from each operator's own public pages and Wikidata. How this guide is made.