Weather in Siem Reap Today
Current temperature in Siem Reap: 27°C (81°F). Partly Cloudy. Today's high 31°C (88°F), low 24°C (75°F).
Today's Daylight Forecast
Moon & Islamic Calendar
Very high UV today. Limit sun exposure around midday. Apply SPF 30+ every 2 hours and seek shade.
5-Day Weather Forecast
Full 15-Day ForecastAtmospheric Details
Today vs Normal
The long-term average high for today is 30°C.
13 of the last 19 days with published data ran above normal.
It continues that pattern - today's forecast is also running above normal.
Red = above normal, blue = at or below · last 12 days
Air Quality
Air quality is considered satisfactory, and air pollution poses little or no risk. It’s a good day to be active outside.
Health & Activity Advice
UV index is 8 today — very high. Limit sun exposure around midday, apply SPF 30+ every two hours, and seek shade when possible.
Air quality is considered satisfactory, and air pollution poses little or no risk. It’s a good day to be active outside.
Morning before 10 AM or evening after 4 PM is the more comfortable window for outdoor activity today.
High humidity (87%) combined with the heat means it will feel more uncomfortable than the air temperature alone suggests — stay hydrated if you're active outside.
Nearby Regional Outlook
Siem Reap Weather Radar
Live precipitation · Cloud cover · Wind
Frequently Asked Questions
What is the hottest month in Siem Reap?
The hottest month in Siem Reap is typically April, with daytime highs averaging around 34.4°C (94°F), based on 10 years of historical weather data. Overnight lows during this period average near 25.7°C (78°F).
What is the coldest month in Siem Reap?
The coldest month in Siem Reap is typically December, with overnight lows averaging around 21.5°C (71°F) and daytime highs near 29.9°C (86°F), based on 10 years of historical weather data.
Does Siem Reap have a rainy season?
Siem Reap doesn't have a sharply defined rainy season rainfall is fairly spread across the year based on 10 years of historical data. September is the wettest month on average (about 343 mm), while January is the driest (about 18 mm).
What's the best time of year to visit Siem Reap?
The best time to visit Siem Reap is typically December to January, when daytime highs average a comfortable 30.5°C (87°F). Rainfall during this window averages around 24 mm, one of the lighter, more comfortable stretches of the year. This is based on 10 years of historical weather data.