Siem Reap
May
Weather in Siem Reap for May 2025
Your guide to Siem Reap weather in May - trends and predictions
In general, the average temperature in Siem Reap at the beginning of May is 37.1 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 33.7 °C by the end of May.
Expect significant rainfall in Siem Reap during May, with an average of 16 rainy days.
Is May a good time to visit Siem Reap? check out the best time to travel to Siem Reap page.
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15
Dry days
16
Rainy days
0
Snow days
36°/25°
Temperatures
14 km/h
Avg max wind
66 %
Avg humidity
Siem Reap in May average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  37° | 2  37° | 3 36° | 4 37° | |||
| 5  38° | 6 38° | 7 37° | 8  37° | 9 34° | 10 34° | 11 36° |
| 12 33° | 13 34° | 14 33° | 15 35° | 16  36° | 17 36° | 18 36° |
| 19 37° | 20 37° | 21 34° | 22 31° | 23 34° | 24 34° | 25 33° |
| 26 35° | 27 35° | 28 32° | 29 34° | 30 35° | 31 32° |
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Temperatures trend during May in Siem Reap
See the weather trend as well as the moving average line
May weather day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 May | Patchy rain possible | 37° /25° | 0.2 mm | 9 | |
| 2 May | Moderate or heavy rain shower | 37° /26° | 1.3 mm | 8 | |
| 3 May | Patchy rain possible | 36° /26° | 1.2 mm | 8 | |
| 4 May | Patchy rain possible | 37° /26° | 0.2 mm | 8 | |
| 5 May | Partly cloudy | 38° /26° | 0.3 mm | 9 | |
| 6 May | Partly cloudy | 38° /26° | 0.5 mm | 9 | |
| 7 May | Patchy rain possible | 37° /26° | 1.3 mm | 8 | |
| 8 May | Heavy rain at times | 37° /26° | 2.2 mm | 8 | |
| 9 May | Moderate or heavy rain shower | 34° /25° | 5.8 mm | 8 | |
| 10 May | Moderate or heavy rain shower | 34° /25° | 8.1 mm | 8 | |
| 11 May | Heavy rain at times | 36° /25° | 1.7 mm | 8 | |
| 12 May | Moderate or heavy rain shower | 33° /26° | 13.5 mm | 8 | |
| 13 May | Patchy rain possible | 34° /25° | 10.4 mm | 7 | |
| 14 May | Moderate or heavy rain shower | 33° /25° | 4.6 mm | 7 | |
| 15 May | Heavy rain at times | 35° /26° | 2.1 mm | 8 | |
| 16 May | Overcast | 36° /25° | 4.1 mm | 8 | |
| 17 May | Moderate or heavy rain shower | 36° /25° | 1.8 mm | 8 | |
| 18 May | Patchy rain possible | 36° /25° | 0.2 mm | 8 | |
| 19 May | Partly cloudy | 37° /26° | 0.3 mm | 9 | |
| 20 May | Patchy rain possible | 37° /26° | 0.8 mm | 8 | |
| 21 May | Overcast | 34° /26° | 6.1 mm | 8 | |
| 22 May | Patchy rain possible | 31° /24° | 9 mm | 7 | |
| 23 May | Patchy rain possible | 34° /25° | 10 mm | 8 | |
| 24 May | Moderate or heavy rain shower | 34° /25° | 8 mm | 8 | |
| 25 May | Moderate or heavy rain shower | 33° /24° | 5.6 mm | 7 | |
| 26 May | Moderate or heavy rain shower | 35° /25° | 2.5 mm | 8 | |
| 27 May | Moderate or heavy rain shower | 35° /25° | 5.1 mm | 8 | |
| 28 May | Moderate or heavy rain shower | 32° /25° | 15.3 mm | 8 | |
| 29 May | Moderate or heavy rain shower | 34° /25° | 8.6 mm | 8 | |
| 30 May | Heavy rain at times | 35° /25° | 7.4 mm | 8 | |
| 31 May | Moderate or heavy rain shower | 32° /25° | 7.5 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 36° and not dropping much below 25° 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 291.1 mm is expected in Siem Reap during May, occurring over more than 16 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.
What to pack to Siem Reap in May?
As you prepare for your trip to Siem Reap in May, it's important to consider the typical weather patterns for the time of year. Below is a carefully tailored packing list to ensure that your time in Siem Reap, during May, is comfortable and enjoyable, regardless of the weather conditions.
- Clothing
- Lightweight Clothing: T-shirts, blouses, shorts, skirts
- Rain Gear: Lightweight, waterproof clothing
- Footwear
- Waterproof Shoes
- Sandals/Flip-flops: Comfortable for warm climates
- Accessories
- Sunglasses: For sun protection
- Sun Hats: Wide-brimmed hats for sun protection in warm weather
- Umbrellas/Raincoats: For rainy days
- Personal Items
- Sunscreen: High SPF for sunny destinations
- Lip Balm with SPF: To protect against chapped lips
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