2026 Climate Averages

Siem Reap: Weather Guide & Climate

Complete month-by-month weather guide: Siem Reap. Best time to visit: November, December, January, February, March. Plan your trip with detailed climate data.

☀️ Climate Overview

Siem Reap has a Tropical climate with average yearly highs of 32°C, lows of 25°C, and approximately 15 rainy days per month.

The best time to visit Siem Reap is during November, December, January, February, March, when humidity is lower and there are fewer rain showers

Drier season: Jan–Dec Wetter season: May–Oct

Now

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Feels like --
Wind --
Humidity --
UV Index --
Local time —

Air Quality

Best Time

J F M A M J J A S O N D
Conditions Excellent

Hottest

35°C April
Avg Low 27°C
Rain 9 days

Coldest

22°C January
Avg High 31°C
Rain 1 day

Driest Month

1 rainy days January
Avg High 31°C
Avg Low 22°C

Windiest Month

15 km/h

July (gusts 34)

Forecast for your trip dates

Up to 14 days ahead

Weather by Season

Spring

Mar–May

High 34°C
Low 27°C
Rain 11 days
Crowds
Moderate
Travel Costs Shoulder Rates

Summer

Jun–Aug

High 33°C
Low 27°C
Rain 23 days
Crowds
Very Quiet
Travel Costs Value Rates

Autumn

Sep–Nov

High 31°C
Low 25°C
Rain 22 days
Crowds
Moderate
Travel Costs Shoulder Rates

Winter

Dec–Feb

High 31°C
Low 23°C
Rain 3 days
Crowds
Very Busy
Travel Costs Peak Rates

Month-by-Month Weather Table

January

Best
Excellent
31° / 22°
1d (15mm)
10.2h
70% Muggy
UV 7.6 Very High

February

Best
Excellent
32° / 24°
3d (21mm)
10.6h
68% Muggy
UV 8.4 Very High

March

Best
Excellent
34° / 26°
6d (32mm)
11h
69% Muggy
UV 8.9 Very High

April

Good
35° / 27°
9d (74mm)
11h
70% Muggy
UV 9 Very High

May

Wet
34° / 27°
18d (136mm)
10.5h
75% Muggy
UV 8.1 Very High

June

Wet
34° / 27°
21d (119mm)
9.9h
76% Muggy
UV 7.8 Very High

July

Wet
32° / 27°
26d (189mm)
8.6h
80% Very Muggy
UV 6.9 High

August

Wet
33° / 27°
23d (154mm)
9.5h
79% Muggy
UV 7.5 Very High

September

Wet
31° / 26°
28d (275mm)
7.5h
84% Very Muggy
UV 6 High

October

Wet
31° / 25°
24d (271mm)
8h
83% Very Muggy
UV 6.1 High

November

Best
Excellent
31° / 24°
14d (105mm)
9.4h
79% Muggy
UV 6.6 High

December

Best
Excellent
30° / 23°
4d (20mm)
9.8h
73% Muggy
UV 6.8 High

⚖️Find Your Ideal Month

Adjust the sliders to weight what matters most to you.

5
3
3
Your Best MonthOctScore: 8
1.Oct
82.May
7.63.Jun
7.64.Jul
7.65.Aug
7.66.Sep
7.27.Apr
6.58.Jan
5.69.Feb
5.610.Dec
5.611.Nov
5.212.Mar
4.7

Where to Stay

See hotels, apartments & rentals around Siem Reap – live prices from Booking.com, Expedia, Vrbo and more

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Siem Reap

Gateway to Angkor's jungle-wrapped temples and sunrise silhouettes over ancient towers. Discover Angkor Wat sunrise.

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Ready to Plan Your Siem Reap Trip?

Get strategic travel tips, seasonal insights, and expert recommendations.

Frequently Asked Questions

What type of climate does Siem Reap have?
Siem Reap has a tropical climate with average yearly temperatures of 32°C and 25°C.
When is the best time to visit Siem Reap?
The best time to visit Siem Reap is during November, December, January, February, March, when temperatures average around 31°C and conditions are ideal for sightseeing.
What are the hottest and coldest months in Siem Reap?
The hottest month in Siem Reap is April with average highs of 35°C, while the coldest is January with average lows of 22°C.
When is the rainy season in Siem Reap?
Siem Reap sees the most rain in September (28 rainy days), while January is the driest month (1 rainy days).
Does it get cold at night in Siem Reap?
Night temperatures vary throughout the year. The coldest nights are in January (22°C), while April has the warmest evenings (27°C). Pack layers for cooler months.
When is it too hot to visit Siem Reap?
Siem Reap can get very hot during April, with temperatures reaching up to 35°C. Plan outdoor activities for early morning or evening, and stay hydrated.

Weather Data: Based on 2020–2025 historical climate data from Open-Meteo

Last Updated: February 2026

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