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Weather in Siem Reap for May 2026

Your guide to Siem Reap weather in May - trends and predictions

    Temperatures

  • In general, the average temperature in Siem Reap at the beginning of May is 36.7 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 33 °C by the end of May.

  • Rain 🌧️

  • Siem Reap experiences heavy rainfall in May, with over 20 rainy days and an average total precipitation 145.5 mm.

Average dry days
7
Dry days
Average rainy days
24
Rainy days
Average snowy days
0
Snow days
Average temperatures
35°/26°
Temperatures
Average wind speed
14 km/h
Avg max wind
Average humidity
66 %
Avg humidity

Siem Reap Weather May

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Temperatures trend during May in Siem Reap

See the weather trend as well as the moving average line

May weather in Siem Reap day by day

Click on a date for more information
Date Weather Temperatures Rain UV More
1 May Patchy rain possible
Patchy rain possible
37° /25° 0.2 mm 8
2 May Patchy rain possible
Patchy rain possible
37° /26° 3.7 mm 8
3 May Patchy rain possible
Patchy rain possible
35° /26° 3.5 mm 8
4 May Patchy rain possible
Patchy rain possible
36° /25° 1.7 mm 8
5 May Patchy rain possible
Patchy rain possible
37° /26° 0.2 mm 8
6 May Patchy rain possible
Patchy rain possible
38° /26° 0.4 mm 8
7 May Patchy rain possible
Patchy rain possible
37° /26° 1 mm 8
8 May Patchy rain possible
Patchy rain possible
37° /26° 1.5 mm 8
9 May Moderate or heavy rain shower
Moderate or heavy rain shower
36° /25° 4.2 mm 8
10 May Moderate or heavy rain shower
Moderate or heavy rain shower
35° /25° 7.8 mm 8
11 May Heavy rain at times
Heavy rain at times
34° /24° 14 mm 7
12 May Light rain shower
Light rain shower
33° /25° 10.2 mm 7
13 May Light rain shower
Light rain shower
32° /24° 10.1 mm 7
14 May Moderate or heavy rain shower
Moderate or heavy rain shower
33° /25° 3.3 mm 7
15 May Heavy rain at times
Heavy rain at times
34° /25° 6.4 mm 7
16 May Overcast
Overcast
33° /25° 4.2 mm 7
17 May Patchy rain possible
Patchy rain possible
34° /25° 2.9 mm 7
18 May Patchy rain possible
Patchy rain possible
35° /25° 2.5 mm 7
19 May Partly cloudy
Partly cloudy
36° /26° 2.1 mm 8
20 May Patchy rain possible
Patchy rain possible
36° /26° 2.1 mm 8
21 May Overcast
Overcast
33° /25° 4.6 mm 7
22 May Patchy rain possible
Patchy rain possible
32° /24° 6.1 mm 7
23 May Patchy rain possible
Patchy rain possible
33° /25° 9.2 mm 7
24 May Moderate or heavy rain shower
Moderate or heavy rain shower
33° /25° 15.3 mm 7
25 May Moderate or heavy rain shower
Moderate or heavy rain shower
33° /24° 7.6 mm 7
26 May Moderate or heavy rain shower
Moderate or heavy rain shower
34° /25° 5.2 mm 7
27 May Moderate or heavy rain shower
Moderate or heavy rain shower
35° /25° 6.2 mm 8
28 May Moderate or heavy rain shower
Moderate or heavy rain shower
33° /25° 11.2 mm 7
29 May Moderate or heavy rain shower
Moderate or heavy rain shower
32° /25° 11.1 mm 7
30 May Heavy rain at times
Heavy rain at times
32° /24° 16.2 mm 7
31 May Moderate or heavy rain shower
Moderate or heavy rain shower
32° /24° 5 mm 7
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Important Notice
Our weather forecast for Siem Reap in May is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Siem Reap forecast closer to your planned date for the most up-to-date weather information.

Siem Reap in May - FAQ

What are the expected maximum and minimum temperatures in Siem Reap during May?
With daytime temperatures soaring above 35° and not dropping much below 26° at night, May in Siem Reap is quite hot. Staying hydrated and avoiding peak sun hours is advisable.
How much rainfall should be expected in Siem Reap during May?
Significant rainfall exceeding 145.5 mm is expected in Siem Reap during May, occurring over more than 24 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Siem Reap during May?
The average wind speed in Siem Reap during May is 14 km/h, suggesting breezy to windy conditions, depending on your activities.

May rainfall patterns in Siem Reap

Explore the daily rainfall trends and prepare for Siem Reaps May weather 💧

UV exposure in Siem Reap during May

Stay informed about UV levels for safe outdoor activities throughout the month of May ☀️

Quick links

More Siem Reap weather pages
Location coordinates Where is Siem Reap?

Get accurate weather forecasts for Siem Reap, located at latitude 13.362 and longitude 103.861. Stay updated with localized weather information tailored for Siem Reap.

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