Phnom Penh, Cambodia climate
Average temperatures, precipitation and all-time records for Phnom Penh, Cambodia, with every day graded against ~46 years of local climate history (1980–2026). Its warmest month is April, averaging a high of 36°C, and its coldest is January, with an average low of 22°C.
Phnom Penh is the capital and most populous city of Cambodia. It has been the national capital since 1865 and has grown to become the nation's primate city and its political, economic, industrial, and cultural centre. via Wikipedia
How today compares
Latest recorded day: 2026-10-11. Each reading placed on Phnom Penh, Cambodia's own ±7-day seasonal distribution.
Percentiles marked * are pending verification.
Phnom Penh average temperatures by month
Typical daily high and low, and average precipitation, for each month in Phnom Penh, Cambodia, based on 1980–2026 records. The wettest month is September (8 mm on an average day).
| Month | Avg high | Avg low | Avg precip |
|---|---|---|---|
| January | 32°C | 22°C | 0 mm |
| February | 34°C | 23°C | 0 mm |
| March | 35°C | 25°C | 3 mm |
| April | 36°C | 26°C | 3 mm |
| May | 35°C | 26°C | 5 mm |
| June | 33°C | 26°C | 5 mm |
| July | 33°C | 26°C | 5 mm |
| August | 33°C | 26°C | 5 mm |
| September | 32°C | 25°C | 8 mm |
| October | 32°C | 25°C | 8 mm |
| November | 31°C | 24°C | 3 mm |
| December | 31°C | 23°C | 0 mm |
Each bar spans the 10th-percentile daily low to the 90th-percentile daily high (the range most days fall within), coloured cold → hot on a shared -23°C to 46°C scale, so the whole year's rhythm reads at a glance.
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Record extremes
- Hottest day on record: 40°C on 2010-03-25
- Coldest day on record: 15°C on 1999-12-25
Percentiles compare each day to Phnom Penh, Cambodia's own history, so grades are relative to this location: a “Near Record” day here isn't the same temperature as elsewhere. How the grades work →