Best Time to Visit Siem Reap
Best time to visit Siem Reap: January, February and December. Month-by-month temperature, rainfall and crowd guidance.
Best time to visit Siem Reap
Go in January, February and December. These months score highest on comfortable temperatures, low rainfall and useful daylight.
Hardest months: May, July and September - expect the least comfortable mix of heat, cold or rain.
Climate in Siem Reap month by month
Average high, average low and total rainfall, based on three years of reanalysis data.
| Month | Avg high | Avg low | Rainfall | Rating |
|---|---|---|---|---|
| January | 87° | 68° | 0,0 in | ★★★★★ |
| February | 92° | 74° | 0,5 in | ★★★★☆ |
| March | 93° | 76° | 2,7 in | ★★★★☆ |
| April | 97° | 80° | 2,3 in | ★★★★☆ |
| May | 93° | 79° | 8,9 in | ★★☆☆☆ |
| June | 92° | 79° | 7,2 in | ★★★☆☆ |
| July | 90° | 78° | 10,7 in | ★★☆☆☆ |
| August | 91° | 77° | 6,5 in | ★★★☆☆ |
| September | 88° | 76° | 14,9 in | ★★☆☆☆ |
| October | 88° | 75° | 10,7 in | ★★☆☆☆ |
| November | 87° | 73° | 4,1 in | ★★★★☆ |
| December | 87° | 71° | 1,2 in | ★★★★★ |
Climate type: Tropical. Source: Open-Meteo archive (ERA5).
How Siem Reap compares with nearby places
Annual averages, and the difference against Siem Reap.
| Place | Distance | Avg temp | vs here | Annual rain |
|---|---|---|---|---|
| Suvarnabhumi Airport | 209 mi | 83°F | about the same | 68 in |
| Thailand | 226 mi | 83°F | +33°F warmer | 63 in |
| Bangkok | 226 mi | 83°F | +33°F warmer | 63 in |
| Grand Palace | 227 mi | 83°F | +33°F warmer | 63 in |
| Mekong River | 328 mi | 80°F | 35°F cooler | 85 in |
Best time to visit each attraction in Siem Reap
1 attractions mapped in this atlas
Best time to visit each unesco world heritage site in Siem Reap
1 unesco world heritage sites mapped in this atlas
What to pack, what to skip
- Lightweight, light-coloured clothing and a refillable water bottle
- Sunglasses, a brimmed hat and SPF 30+
- A packable rain shell - 7 of the next 7 days carry a real chance of rain
- Insect repellent and quick-dry fabrics for humidity
- Avoid exposed ridgelines, small boats and rooftop viewpoints while gusts stay above 31 mph.
- If your dates are flexible, avoid May, July and September - historically the least comfortable months here.
Summary
Siem Reap is a city in Cambodia. Siem Reap is known for Base for Angkor Wat. It has a population of about 245.000.
Right now it is 83°F (28°C) in Siem Reap with overcast. It feels like 91°F. Today runs from 79°F to 90°F. Chance of precipitation is 80%. Sightseeing conditions score 7.1/10 - good conditions.
The best time to visit Siem Reap is January, February and December. The climate is tropical. May, July and September tend to be the least comfortable months. April is the warmest month with average highs near 97°F, while January is the coldest with lows near 68°F.
The closest major airport is Suvarnabhumi Airport (BKK), about 209 mi away. Nearby highlights include Angkor Wat, Angkor and Grand Palace.
In plain terms. Today is about average for August. The forecast high of 90°F is in line with the 91°F typical for this month. The best window to be outside is roughly 7 AM to 10 AM, when temperature, rain chance and wind line up best. fishing is the strongest bet in Siem Reap today at 8.6/10. Gusts to 31 mph will push high-sided vehicles on exposed roads and bridges. Wet roads are likely; braking distances roughly double in heavy rain.
Compiled from this page's own data: atlas facts plus live Open-Meteo readings.
Weather in Siem Reap right now
Wear sunglasses and use SPF 30+ if you are outside for long.
Source: Open-Meteo. Updated 1:30 PM, Aug 23 local time.
Weekend outlook
🌦️ 90° / 79°
Light showers · 80% rain · wind 16 mph
☁️ 89° / 78°
Overcast · 78% rain · wind 14 mph
Things to do in Siem Reap
Attractions, parks and landmarks in and around Siem Reap.
Quick facts about Siem Reap
Explore Siem Reap
Every topic we hold for this place, and the same topic for the places around it.
Best Time to Visit for related places
Frequently asked questions
Where is Siem Reap?
Siem Reap is a city in Cambodia. Its coordinates are 13.3671, 103.8448. It lies in Asia.
What is the weather like in Siem Reap right now?
It is currently 83°F (28°C) with overcast. Humidity is 78% and wind is 9 mph.
When is the best time to visit Siem Reap?
January, February and December offer the most comfortable conditions in Siem Reap, which has a tropical climate. May, July and September are usually the hardest months for outdoor plans.
What time zone is Siem Reap in?
Siem Reap observes Asia/Phnom_Penh (UTC+07:00). The local time is 1:30 PM.
How many people live in Siem Reap?
Siem Reap has a population of approximately 245.000.
What is the nearest airport to Siem Reap?
The closest airports are Suvarnabhumi Airport (BKK), 209 mi away.
What are the top things to do in Siem Reap?
Popular options include Angkor Wat, Angkor and Grand Palace.
What places are in Siem Reap?
Siem Reap covers 2 places in this atlas, including Angkor Wat and Angkor.
Related articles
Data sources and methodology
| Place data | USPOTUS Atlas dataset (cities-world) - coordinates, hierarchy and facts. |
|---|---|
| Forecast and observations | Open-Meteo (ECMWF and national models). |
| Air quality and pollen | Copernicus CAMS via Open-Meteo. US AQI scale. |
| Climate averages | ERA5 reanalysis via the Open-Meteo archive, aggregated over 3 years. |
| Method | Scores, comparisons and advice on this page are computed from the inputs above. Distances are straight-line. Nothing is estimated where data is missing - the block is simply not shown. |
Last updated August 23, 2026 at 1:30 PM local time. Live blocks refresh every 15 minutes; climate averages monthly.
