Siem Reap Weather Forecast
Siem Reap weather: 83°F, overcast. Hourly forecast, 14-day outlook, UV, air quality and the best time to visit.
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 12:55 PM, Aug 23 local time.
See the Siem Reap forecast by time range
Next 24 hours
Hour-by-hour temperature, precipitation chance and wind.
16-day forecast for Siem Reap
Daily highs and lows, precipitation and UV.
| Day | Conditions | High / Low | Precip | Wind | UV |
|---|---|---|---|---|---|
| Sun, Aug 23 | 🌦️ Light showers | 90° / 79° | 80% · 0,1 in | 16 mph | 8 |
| Mon, Aug 24 | 🌦️ Light drizzle | 90° / 78° | 46% · 0,0 in | 16 mph | 6 |
| Tue, Aug 25 | 🌦️ Drizzle | 90° / 80° | 84% · 0,1 in | 16 mph | 7 |
| Wed, Aug 26 | ⛈️ Thunderstorm | 91° / 80° | 80% · 0,1 in | 14 mph | 8 |
| Thu, Aug 27 | ⛈️ Thunderstorm | 91° / 78° | 82% · 0,2 in | 15 mph | 7 |
| Fri, Aug 28 | 🌦️ Drizzle | 91° / 77° | 90% · 0,1 in | 14 mph | 6 |
| Sat, Aug 29 | ☁️ Overcast | 89° / 78° | 78% | 14 mph | 8 |
| Sun, Aug 30 | 🌦️ Light drizzle | 90° / 78° | 84% · 0,1 in | 12 mph | 4 |
| Mon, Aug 31 | 🌦️ Light drizzle | 86° / 78° | 65% · 0,1 in | 13 mph | 2 |
| Tue, Sep 1 | 🌦️ Light drizzle | 92° / 78° | 63% · 0,0 in | 8 mph | 2 |
| Wed, Sep 2 | 🌦️ Light drizzle | 92° / 79° | 69% · 0,0 in | 9 mph | 3 |
| Thu, Sep 3 | 🌦️ Light drizzle | 89° / 80° | 75% · 0,1 in | 11 mph | 6 |
| Fri, Sep 4 | ⛈️ Thunderstorm | 82° / 78° | 82% · 0,6 in | 8 mph | 8 |
| Sat, Sep 5 | 🌧️ Heavy drizzle | 85° / 76° | 88% · 0,7 in | 8 mph | 8 |
| Sun, Sep 6 | 🌦️ Light showers | 83° / 75° | 83% · 0,7 in | 8 mph | 8 |
| Mon, Sep 7 | 🌧️ Heavy drizzle | 90° / 77° | 73% · 0,2 in | 17 mph | 8 |
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).
Weather map for Siem Reap
Animated model layers. Pick a layer to load it.
Animated layers by Windy. For pin-level detail and nearby places, see the interactive map below.
Air quality and pollen in Siem Reap
Air quality: Open-Meteo (CAMS). US AQI scale.
Sun, twilight and moon
Golden and blue hour are the standard photographic approximation around sunrise and sunset.
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.
Weather by attraction in Siem Reap
1 attractions mapped in this atlas
Weather by unesco world heritage site in Siem Reap
1 unesco world heritage sites mapped in this atlas
Explore Siem Reap
Every topic we hold for this place, and the same topic for the places around it.
Weather 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 12:55 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 12:55 PM local time. Live blocks refresh every 15 minutes; climate averages monthly.
