Temperature
Hot by day, warm at night.
Hot afternoons and some sun.
Hot by day, warm at night.
A few rainy days, mostly brief and on-and-off. About 5 wet days, fewer than in most months.
A mix of sunshine and cloud.
Warm days, with humid periods.
In December, afternoons feel about 90° and nights feel near 79°.
Mostly cloudy skies this month.
Calm winds are typical in December.
December late afternoons are around 86°F, easing to about 81°F in early evening.
| Month | High°F | Low°F | Rainin | Wet days | Sunh | Humidity% |
|---|---|---|---|---|---|---|
| Jan | 90 | 73 | 0.6 | 3 | 10.6 | 65 |
| Feb | 92 | 75 | 0.4 | 2 | 11.1 | 63 |
| Mar | 95 | 78 | 1.3 | 6 | 11.4 | 64 |
| Apr | 96 | 80 | 3.3 | 15 | 11.4 | 69 |
| May | 94 | 80 | 6.2 | 24 | 10.6 | 76 |
| Jun | 93 | 79 | 6.2 | 24 | 9.8 | 78 |
| Jul | 91 | 79 | 6.4 | 26 | 9.3 | 79 |
| Aug | 91 | 79 | 7.0 | 26 | 9.2 | 79 |
| Sep | 90 | 78 | 9.8 | 27 | 8.8 | 83 |
| Oct | 90 | 78 | 9.5 | 25 | 9.2 | 83 |
| Nov | 89 | 76 | 3.8 | 13 | 10.0 | 78 |
| Dec | 88 | 74 | 1.2 | 5 | 10.0 | 70 |
Similar climates
Want a side-by-side climate view? Compare Phnom Penh with Ho Chi Minh City.
Typical monthly values are based on long-term climate records. Useful for planning, not a forecast. Check the weather before you travel.
Sunshine: source type is not yet identified at metric level.
Local microclimates can vary by beach, neighborhood, trail, or elevation.
Last updated: Jun 1, 2026
Data & methodology