Climate guideThirty-year normals for Phnom Penh
Phnom Penh climate by month
Tropical savanna · AwBest Jan–Feb · Dec
Annual mean28°day and night
Seasonal swing4°warmest vs coolest
Precipitation1,396 mm166 wet days a year
11.56° N, 104.92° EElevation 20 mUTC+7 · Indochina Time
When to goPhnom Penh · weather score
Best timeJan–Feb · Dec
October: high / low30° / 24°
iSummary
What the weather is like
Phnom Penh has a tropical savanna climate (Köppen Aw): .
The warmest month is April, when afternoons average 35° and nights 26°. November is the coolest month, with highs of 30° and lows of 23°. The difference between the warmest and the coolest month is about 4°, a small seasonal swing typical of places tempered by the sea.
About 1,396 mm of precipitation falls in an average year. October is the wettest month (251 mm, 22 wet days) and February the driest (4 mm, 3 wet days). Cloud cover ranges from 22% in February to 69% in September.
Year in figures
- Hottest afternoons
- 35° · April
- Coldest nights
- 22° · January
- Wettest month
- October
- Driest month
- February
- Clearest skies
- February · 22% cloud
- Longest day
- 12 h 48 min
- Shortest day
- 11 h 27 min
iiCharts
Twelve months at a glance
Temperature and precipitation
Daily high/low range bars, monthly precipitation columnsTemperature curve
Average high, lowDaylight
Hours between sunrise and sunset on the 15th of each monthiiiData table
Climate normals month by month
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Average high | 32° | 33° | 34° | 35° | 34° | 33° | 32° | 32° | 31° | 30° | 30° | 30° |
| Average low | 22° | 23° | 25° | 26° | 26° | 25° | 25° | 25° | 24° | 24° | 23° | 22° |
| Precipitation | 10 mm | 4 mm | 35 mm | 74 mm | 119 mm | 150 mm | 164 mm | 199 mm | 256 mm | 251 mm | 113 mm | 21 mm |
| Wet days (≥1 mm) | 3.1 | 2.8 | 7.3 | 11.9 | 19.1 | 20.6 | 20.3 | 19.9 | 21.2 | 22.1 | 12.5 | 4.8 |
| Cloud cover | 28% | 22% | 25% | 37% | 58% | 65% | 63% | 67% | 69% | 60% | 44% | 35% |
| Daylight | 11h 31 | 11h 46 | 12h 03 | 12h 23 | 12h 39 | 12h 48 | 12h 45 | 12h 31 | 12h 12 | 11h 53 | 11h 36 | 11h 27 |
| Month score | 65 | 60 | 43 | 27 | 20 | 21 | 23 | 23 | 24 | 32 | 43 | 65 |
ivMonth by month
Phnom Penh in every month
January65
32° / 22°
10 mm · 3.1 wet days
February60
33° / 23°
4 mm · 2.8 wet days
March43
34° / 25°
35 mm · 7.3 wet days
April27
35° / 26°
74 mm · 11.9 wet days
May20
34° / 26°
119 mm · 19.1 wet days
June21
33° / 25°
150 mm · 20.6 wet days
July23
32° / 25°
164 mm · 20.3 wet days
August23
32° / 25°
199 mm · 19.9 wet days
September24
31° / 24°
256 mm · 21.2 wet days
October32
30° / 24°
251 mm · 22.1 wet days
November43
30° / 23°
113 mm · 12.5 wet days
December65
30° / 22°
21 mm · 4.8 wet days