Phnom Penh in May
4.5out of 10
Not the best time
Hot: daytime highs around 35°C. Very wet: about 23 rainy days.
35°CAvg high
27°CAvg low
23Rainy days (154 mm)
12:32 hDaylight
05:41Sunrise · 18:13 Sunset
Why this score
- Hot: daytime highs around 35°C
- Very wet: about 23 rainy days
- Rain varies a lot between years (±4.7 days)
What to wear and pack
- Light, breathable clothing
- Shorts or a light skirt
- Rain jacket or compact umbrella
- Sunscreen, sunglasses and a hat
How reliable is the forecast?
Rain in May varies a lot between years (±4.7 rainy days), so check the forecast closer to your trip. Averages cover 30 years (1991–2020). Individual days can differ a lot.
Year at a glance
Weather by month
| Month | Avg high | Avg low | Rainfall | Rainy days | Humidity | Sunshine | Score |
|---|---|---|---|---|---|---|---|
| January | 32°C | 23°C | 15 mm | 3 | – | – | 7.8 |
| February | 34°C | 24°C | 8 mm | 1 | – | – | 7.6 |
| March | 35°C | 26°C | 37 mm | 6 | – | – | 6.5 |
| April | 36°C | 27°C | 81 mm | 14 | – | – | 5.3 |
| May | 35°C | 27°C | 154 mm | 23 | – | – | 4.5 |
| June | 34°C | 26°C | 154 mm | 24 | – | – | 4.8 |
| July | 33°C | 26°C | 154 mm | 26 | – | – | 5.0 |
| August | 33°C | 26°C | 178 mm | 26 | – | – | 5.0 |
| September | 32°C | 25°C | 246 mm | 27 | – | – | 5.2 |
| October | 32°C | 25°C | 243 mm | 25 | – | – | 5.3 |
| November | 32°C | 24°C | 78 mm | 11 | – | – | 6.9 |
| December | 31°C | 23°C | 27 mm | 5 | – | – | 7.8 |
Frequently asked questions
How hot is Phnom Penh in May?
Daytime highs average 35°C and nights about 27°C.
When is the best time to visit Phnom Penh?
The best months are January, December, February.