Phnom Penh · SpringMonth summary
Phnom Penh weather in May
⚠️ Fair
🌡️ Temperature min / max
26°C – 33°C
🌧 Rainy days
82% of days
☀️ Sunshine
10.5h per day on average
🌊 🌊 Season
Spring
⭐ ⭐ Weather score
5.5/10
📅 📅 Best month
January (8.1/10)
Quick decision
Should you visit Phnom Penh in May?
⚠️ Fair
✅ Yes if: you prefer off-season travel with reduced prices and very few tourists.
❌ No if: you want to avoid rain — more than half the days are rainy.
Our take: May is an average time for Phnom Penh. January (8.1/10) is clearly preferable.
By trip type
Phnom Penh in May by trip type
- 🏙️ 🏙️ City break / culture : ⚠️ Possible
- 🚶 🚶 Outdoor activities : ❌ Not recommended
- 🏖️ Beach / swimming : ❌ Not recommended
- 💰 💰 Budget : ✅ Low season
Local context
What to expect in May
🎯 Open terraces and outdoor markets — best season for al fresco dining Spring marks the start of the good season in Phnom Penh. Temperatures rise (33°C) and tourists have not yet arrived en masse. With 82% of rainy days, always have indoor alternatives planned. Not the best window, but acceptable if dates are constrained. January (8.1/10) is significantly better if possible.
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All months for Phnom Penh
Annual table
Month-by-month comparison
| Month | Min °C | Max °C | Rain % | Precip mm | Sun h/d | Score |
|---|---|---|---|---|---|---|
| ☀️ January | 23°C | 32°C | 12% | 0.6 | 11.0h | 8.1/10 |
| ☀️ February | 24°C | 33°C | 11% | 0.6 | 11.1h | 7.8/10 |
| ☀️ March | 25°C | 34°C | 19% | 1.4 | 11.6h | 7.4/10 |
| 🌤️ April | 26°C | 35°C | 47% | 3.4 | 12.0h | 7.0/10 |
| ⛅ May | 26°C | 33°C | 82% | 6.3 | 10.5h | 5.5/10 |
| ⛅ June | 26°C | 32°C | 79% | 5.9 | 10.0h | 6.6/10 |
| 🌧️ July | 25°C | 32°C | 80% | 6.3 | 8.7h | 6.0/10 |
| 🌧️ August | 25°C | 32°C | 84% | 7.1 | 9.5h | 6.0/10 |
| 🌧️ September | 25°C | 31°C | 93% | 10.4 | 8.5h | 5.4/10 |
| 🌧️ October | 24°C | 31°C | 82% | 10.2 | 9.2h | 6.6/10 |
| 🌤️ November | 24°C | 30°C | 53% | 5.2 | 10.9h | 7.4/10 |
| ☀️ December | 24°C | 31°C | 22% | 1.3 | 10.7h | 8.0/10 |
Ideal
Fair
Challenging climate
◀ Current month · Source Open-Meteo · 10 years
📊 Data source
Data based on 10 years of ERA5 records via Open-Meteo, with ECMWF seasonal adjustment. In May, Phnom Penh averages 33°C, 82% rainy days and 10.5h of sunshine per day. Overall weather score: 5.5/10.
See methodology →
Comparison
May vs January (best month)
The best month is January (score 8.1/10). Difference:
- 🌡️ Max temperature : -1°C
- 🌧 Rainy days : -70%
- ☀️ Sunshine : +0.5h/day
FAQ
FAQ — Phnom Penh in May
Is May a good time to visit Phnom Penh?
May is an acceptable time for Phnom Penh (score 5.5/10). Conditions are decent but not optimal — consider January (8.1/10) if possible.
Does it rain a lot in Phnom Penh in May?
Yes, 82% of days see rain in May. Plan some indoor activities as backup.
Accommodation
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