Phnom Penh
May
Weather in Phnom Penh for May 2025
Your guide to Phnom Penh weather in May - trends and predictions
In general, the average temperature in Phnom Penh at the beginning of May is 38.1 °C. As the month progressed, temperatures tended to noticeably cool down, reaching an average of 35.3 °C by the end of May.
Phnom Penh experiences an exceptionally high level of rainfall in May, with more than 20 rainy days on average.
Is May a good time to visit Phnom Penh? check out the best time to travel to Phnom Penh page.
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9
Dry days
22
Rainy days
0
Snow days
36°/26°
Temperatures
16 km/h
Avg max wind
62 %
Avg humidity
Phnom Penh in May average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  38° | 2  38° | 3  38° | 4 37° | |||
| 5 38° | 6  39° | 7  39° | 8 37° | 9 34° | 10 35° | 11 35° |
| 12 34° | 13  35° | 14 36° | 15 36° | 16 36° | 17 36° | 18 37° |
| 19 37° | 20 37° | 21 32° | 22 33° | 23 35° | 24 35° | 25 36° |
| 26 37° | 27 35° | 28 33° | 29 35° | 30 36° | 31 35° |
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Temperatures trend during May in Phnom Penh
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 | Heavy rain at times | 38° /27° | 0.7 mm | 9 | |
| 2 May | Moderate or heavy rain shower | 38° /26° | 4.5 mm | 8 | |
| 3 May | Overcast | 38° /27° | 0.4 mm | 8 | |
| 4 May | Heavy rain at times | 37° /27° | 5.5 mm | 8 | |
| 5 May | Overcast | 38° /25° | 7.1 mm | 8 | |
| 6 May | Partly cloudy | 39° /25° | 2.1 mm | 10 | |
| 7 May | Cloudy | 39° /26° | 5.3 mm | 8 | |
| 8 May | Moderate or heavy rain shower | 37° /27° | 5.8 mm | 8 | |
| 9 May | Moderate or heavy rain shower | 34° /26° | 8.8 mm | 8 | |
| 10 May | Moderate or heavy rain shower | 35° /26° | 5.1 mm | 8 | |
| 11 May | Moderate or heavy rain shower | 35° /27° | 8.9 mm | 8 | |
| 12 May | Moderate or heavy rain shower | 34° /26° | 16 mm | 8 | |
| 13 May | Patchy rain possible | 35° /26° | 6.6 mm | 8 | |
| 14 May | Moderate or heavy rain shower | 36° /26° | 9.4 mm | 8 | |
| 15 May | Cloudy | 36° /27° | 0.9 mm | 8 | |
| 16 May | Partly cloudy | 36° /27° | 3.9 mm | 9 | |
| 17 May | Patchy rain possible | 36° /26° | 4.9 mm | 8 | |
| 18 May | Moderate or heavy rain shower | 37° /27° | 2.4 mm | 8 | |
| 19 May | Patchy rain possible | 37° /27° | 0.2 mm | 8 | |
| 20 May | Moderate rain at times | 37° /27° | 1.2 mm | 8 | |
| 21 May | Patchy rain possible | 32° /27° | 12.3 mm | 7 | |
| 22 May | Moderate or heavy rain shower | 33° /26° | 16.6 mm | 8 | |
| 23 May | Patchy rain possible | 35° /26° | 3.2 mm | 8 | |
| 24 May | Moderate or heavy rain shower | 35° /26° | 4.4 mm | 8 | |
| 25 May | Moderate or heavy rain shower | 36° /26° | 2.1 mm | 8 | |
| 26 May | Patchy rain possible | 37° /26° | 2.1 mm | 8 | |
| 27 May | Heavy rain at times | 35° /26° | 41.7 mm | 8 | |
| 28 May | Moderate or heavy rain shower | 33° /26° | 8.9 mm | 8 | |
| 29 May | Patchy rain possible | 35° /27° | 0.5 mm | 8 | |
| 30 May | Moderate or heavy rain shower | 36° /27° | 3.5 mm | 8 | |
| 31 May | Moderate or heavy rain shower | 35° /27° | 1.3 mm | 8 | |
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Important Notice
Our weather forecast for Phnom Penh 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 Phnom Penh forecast closer to your planned date for the most up-to-date weather information.
Phnom Penh in May - FAQ
What are the expected maximum and minimum temperatures in Phnom Penh during May?
With daytime temperatures soaring above 36° and not dropping much below 26° at night, May in Phnom Penh is quite hot. Staying hydrated and avoiding peak sun hours is advisable.
How much rainfall should be expected in Phnom Penh during May?
Significant rainfall exceeding 382.5 mm is expected in Phnom Penh during May, occurring over more than 22 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Phnom Penh during May?
The average wind speed in Phnom Penh during May is 16 km/h, suggesting breezy to windy conditions, depending on your activities.
What to pack to Phnom Penh in May?
As you prepare for your trip to Phnom Penh 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 Phnom Penh, 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
May rainfall patterns in Phnom Penh
Explore the daily rainfall trends and prepare for Phnom Penhs May weather 💧
UV exposure in Phnom Penh during May
Stay informed about UV levels for safe outdoor activities throughout the month of May ☀️
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