Best Time to Visit
🇰🇭 Siem Reap, Cambodia · Asia
Based on 30-year climate data (1991-2020) from Open-Meteo
Jan
31°
21°
Great
Feb
33°
23°
Great
Mar
34°
25°
Good
Apr
34°
26°
Good
May
33°
26°
Good
Jun
32°
26°
Good
Jul
32°
25°
Good
Aug
31°
25°
Good
Sep
30°
25°
Good
Oct
30°
24°
Good
Nov
30°
23°
Good
Dec
30°
21°
Great
| Month | High | Low | Rain Days | Sunshine | Humidity | UV | Rating | Details |
|---|---|---|---|---|---|---|---|---|
| JanuaryRecommended | 31°C | 21°C | 2 | 11h | 82% | 3 | Great | View |
| FebruaryRecommended | 33°C | 23°C | 3 | 11h | 82% | 3 | Great | View |
| March | 34°C | 25°C | 9 | 11h | 82% | 6 | Good | View |
| April | 34°C | 26°C | 15 | 11h | 82% | 6 | Good | View |
| May | 33°C | 26°C | 22 | 11h | 82% | 8 | Good | View |
| June | 32°C | 26°C | 21 | 10h | 82% | 8 | Good | View |
| July | 32°C | 25°C | 22 | 9h | 82% | 8 | Good | View |
| August | 31°C | 25°C | 25 | 9h | 82% | 8 | Good | View |
| September | 30°C | 25°C | 26 | 9h | 82% | 6 | Good | View |
| October | 30°C | 24°C | 23 | 10h | 82% | 6 | Good | View |
| November | 30°C | 23°C | 9 | 10h | 82% | 3 | Good | View |
| DecemberRecommended | 30°C | 21°C | 3 | 10h | 82% | 3 | Great | View |
Data source: Open-Meteo ERA5 reanalysis archive, 30-year historical normals (1991-2020). Temperatures in Celsius. Sunshine hours are daily averages.
Avg: 34°C high, 26°C low
Temperatures peak at 34°C (93°F), making midday heat intense. Rain is frequent, waterproof gear recommended. Nights cool to 26°C (79°F).
Avg: 32°C high, 25°C low
Temperatures peak at 32°C (90°F), making midday heat intense. Rain is frequent, waterproof gear recommended. Nights cool to 25°C (77°F).
Avg: 30°C high, 24°C low
Temperatures peak at 30°C (86°F), making midday heat intense. Rain is frequent, waterproof gear recommended. Nights cool to 24°C (75°F).
Avg: 31°C high, 22°C low
Temperatures peak at 31°C (88°F), making midday heat intense. Rainfall is low. Nights cool to 22°C (72°F).
The least favorable time to visit Siem Reap is April and May. During this period, you can expect very hot temperatures, heavy rainfall, high humidity.
April
Challenges: very hot temperatures, heavy rainfall, high humidity
May
Challenges: very hot temperatures, heavy rainfall, high humidity
March
Challenges: very hot temperatures, high humidity
Note: visiting during off-peak months often means lower prices, fewer crowds, and a more authentic experience.
Packing recommendations for visiting Siem Reap during the best travel months (January, December, February), when temperatures range from 22°C to 31°C:
Siem Reap has a tropical climate (Koppen classification: Am). The warmest month is April with highs of 34°C, while the coldest month is December at just 30°C. Annual rainfall averages 1340mm across approximately 180 rain days.
| Metric | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| High °C | 31 | 33 | 34 | 34 | 33 | 32 | 32 | 31 | 30 | 30 | 30 | 30 |
| Low °C | 21 | 23 | 25 | 26 | 26 | 26 | 25 | 25 | 25 | 24 | 23 | 21 |
| Rain Days | 2 | 3 | 9 | 15 | 22 | 21 | 22 | 25 | 26 | 23 | 9 | 3 |
| Rain mm | 8 | 14 | 55 | 98 | 154 | 137 | 143 | 173 | 257 | 225 | 61 | 15 |
| Sun h/day | 11 | 11 | 11 | 11 | 11 | 10 | 9 | 9 | 9 | 10 | 10 | 10 |
| Humidity % | 82 | 82 | 82 | 82 | 82 | 82 | 82 | 82 | 82 | 82 | 82 | 82 |
| UV Index | 3 | 3 | 6 | 6 | 8 | 8 | 8 | 8 | 6 | 6 | 3 | 3 |
Considering alternatives to Siem Reap? Compare the best travel months for nearby cities:
For a complete day-by-day weather breakdown including packing lists, activities, and local events, explore each month individually:
January
February
March
April
May
June
July
August
September
October
November
December
Explore weather guides for other popular destinations: