Siem Reap weather in March
In March, Siem Reap sees average daytime highs of 34°C and overnight lows near 26°C, with 52 mm of rain across 7.8 wet days and about 11.9 hours of daylight. It is the 2nd-warmest and 9th-wettest month of the year here.
Day-to-day highs hold fairly steady near 34°C through the month. The sky is clear or mostly clear about 52% of the time in March, and the air most often feels oppressive.
Daylight stretches from about 11 h 42 min at the start of March to 12 h 06 min by month's end. Set against the rest of the year, March is Siem Reap's 3rd-clearest and 7th-windiest month. For the whole year in context, see Siem Reap's year-round climate.
- Daytime high
- 34°
- 2nd warmest
- Overnight low
- 26°
- 7th coldest
- Rainfall
- 52 mm
- 7.8 wet days
- Daylight
- 11 h 54 min
- 6:17 AM – 6:11 PM
- Cloud cover
- 44%
- 3rd clearest
- Wind
- 8 km/h
- 7th windiest
- Solar energy
- 6.1 kWh/m²
- Travel score
- 3.2
- out of 10
Siem Reap is capital of the same named Cambodian province.
- Founded
- ~802 CE
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Temperature in March
Day-to-day highs hold fairly steady near 34°C through the month.
A typical March day in Siem Reap reaches about 34°C in the afternoon and slips back to 26°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 32°C and 36°C. Set against its neighbours, March runs about 2°C warmer than February and on par with April.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 34 | 34 | 34 | 34 | 34 | 34 | 34 | 34 | 34 | 34 | 34 | 34 | 34 | 34 | 34 | 34 | 34 | 34 | 34 | 34 | 34 | 34 | 34 | 34 | 34 | 34 | 34 | 34 | 34 | 34 | 34 |
| Avg low (°C) | 25 | 25 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| 1 | 34 | 25 |
| 2 | 34 | 25 |
| 3 | 34 | 26 |
| 4 | 34 | 26 |
| 5 | 34 | 26 |
| 6 | 34 | 26 |
| 7 | 34 | 26 |
| 8 | 34 | 26 |
| 9 | 34 | 26 |
| 10 | 34 | 26 |
| 11 | 34 | 26 |
| 12 | 34 | 26 |
| 13 | 34 | 26 |
| 14 | 34 | 26 |
| 15 | 34 | 26 |
| 16 | 34 | 26 |
| 17 | 34 | 26 |
| 18 | 34 | 26 |
| 19 | 34 | 26 |
| 20 | 34 | 26 |
| 21 | 34 | 26 |
| 22 | 34 | 26 |
| 23 | 34 | 26 |
| 24 | 34 | 27 |
| 25 | 34 | 27 |
| 26 | 34 | 27 |
| 27 | 34 | 27 |
| 28 | 34 | 27 |
| 29 | 34 | 27 |
| 30 | 34 | 27 |
| 31 | 34 | 27 |
How March really feels in Siem Reap
Once humidity and wind are folded in, March averages 31 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.
The story in March is heat — humidity pushes the afternoon "feels like" well above the raw temperature.
Siem Reap weather by month
How March compares with the rest of the year at a glance. March is the 2nd-warmest and 9th-wettest month here — the current month is highlighted below.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 31° / 23° | 9 | 1.9 | 11.3 | 5.5 |
| Feb | 33° / 24° | 13 | 2.6 | 11.6 | 4.5 |
| Mar | 34° / 26° | 52 | 7.8 | 11.9 | 3.2 |
| Apr | 35° / 27° | 94 | 13.5 | 12.3 | 2.5 |
| May | 34° / 27° | 148 | 21.4 | 12.6 | 2.2 |
| Jun | 33° / 27° | 132 | 20.7 | 12.8 | 2.4 |
| Jul | 32° / 27° | 135 | 22.1 | 12.7 | 2.6 |
| Aug | 32° / 26° | 162 | 24.4 | 12.4 | 2.4 |
| Sep | 31° / 26° | 244 | 25.9 | 12.1 | 2.5 |
| Oct | 31° / 25° | 224 | 23.3 | 11.7 | 3.1 |
| Nov | 31° / 24° | 62 | 8.8 | 11.4 | 4.7 |
| Dec | 30° / 23° | 16 | 2.9 | 11.2 | 5.7 |
Cloud cover in March
The sky is clear or mostly clear about 52% of the time in March.
Beyond those clear spells, partly cloudy skies cover about 17% of March, with mostly cloudy or overcast conditions the remaining 31%. Skies tend to cloud over as the month goes on.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Clearer (%) | 79 | 79 | 79 | 79 | 79 | 79 | 78 | 78 | 78 | 78 | 77 | 76 | 75 | 73 | 72 | 71 | 69 | 68 | 66 | 64 | 63 | 62 | 61 | 59 | 58 | 57 | 56 | 55 | 54 | 54 | 54 |
| Cloudier (%) | 21 | 21 | 21 | 21 | 21 | 21 | 22 | 22 | 22 | 22 | 23 | 24 | 25 | 27 | 28 | 29 | 31 | 32 | 34 | 36 | 37 | 38 | 39 | 41 | 42 | 43 | 44 | 45 | 46 | 46 | 46 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 79 | 21 |
| 2 | 79 | 21 |
| 3 | 79 | 21 |
| 4 | 79 | 21 |
| 5 | 79 | 21 |
| 6 | 79 | 21 |
| 7 | 78 | 22 |
| 8 | 78 | 22 |
| 9 | 78 | 22 |
| 10 | 78 | 22 |
| 11 | 77 | 23 |
| 12 | 76 | 24 |
| 13 | 75 | 25 |
| 14 | 73 | 27 |
| 15 | 72 | 28 |
| 16 | 71 | 29 |
| 17 | 69 | 31 |
| 18 | 68 | 32 |
| 19 | 66 | 34 |
| 20 | 64 | 36 |
| 21 | 63 | 37 |
| 22 | 62 | 38 |
| 23 | 61 | 39 |
| 24 | 59 | 41 |
| 25 | 58 | 42 |
| 26 | 57 | 43 |
| 27 | 56 | 44 |
| 28 | 55 | 45 |
| 29 | 54 | 46 |
| 30 | 54 | 46 |
| 31 | 54 | 46 |
Chance of precipitation in March
Siem Reap gets around 52 mm of rain over 7.8 wet days in March. The line is the day-by-day chance of measurable precipitation.
Day to day, the chance of measurable rain averages around 26% and peaks near 38% on the wettest days. The odds climb toward the end of the month.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rain chance (%) | 15 | 15 | 15 | 15 | 16 | 16 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 26 | 27 | 28 | 29 | 30 | 31 | 32 | 33 | 34 | 34 | 35 | 36 | 36 | 37 | 38 | 38 |
| Rain chance (%) | |
|---|---|
| 1 | 15 |
| 2 | 15 |
| 3 | 15 |
| 4 | 15 |
| 5 | 16 |
| 6 | 16 |
| 7 | 16 |
| 8 | 17 |
| 9 | 18 |
| 10 | 19 |
| 11 | 20 |
| 12 | 21 |
| 13 | 22 |
| 14 | 23 |
| 15 | 24 |
| 16 | 26 |
| 17 | 27 |
| 18 | 28 |
| 19 | 29 |
| 20 | 30 |
| 21 | 31 |
| 22 | 32 |
| 23 | 33 |
| 24 | 34 |
| 25 | 34 |
| 26 | 35 |
| 27 | 36 |
| 28 | 36 |
| 29 | 37 |
| 30 | 38 |
| 31 | 38 |
Humidity in March
Most of March feels oppressive — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, March lands in the oppressive band about 60% of days. Sticky, muggy-or-worse air turns up on roughly 95% of them.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Comfortable (%) | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Humid (%) | 11 | 10 | 10 | 9 | 9 | 8 | 7 | 7 | 6 | 5 | 5 | 4 | 3 | 3 | 2 | 2 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Muggy (%) | 19 | 19 | 19 | 18 | 18 | 17 | 17 | 16 | 15 | 15 | 14 | 13 | 13 | 12 | 11 | 11 | 10 | 10 | 9 | 9 | 9 | 9 | 8 | 8 | 8 | 8 | 7 | 7 | 7 | 7 | 6 |
| Oppressive (%) | 58 | 59 | 59 | 61 | 60 | 62 | 62 | 62 | 64 | 64 | 64 | 65 | 65 | 66 | 68 | 67 | 67 | 67 | 67 | 65 | 63 | 61 | 60 | 58 | 55 | 53 | 52 | 50 | 48 | 46 | 44 |
| Miserable (%) | 11 | 11 | 11 | 11 | 12 | 12 | 13 | 14 | 14 | 15 | 16 | 17 | 18 | 18 | 19 | 20 | 21 | 22 | 23 | 25 | 27 | 28 | 30 | 32 | 35 | 37 | 39 | 41 | 44 | 46 | 48 |
| Comfortable (%) | Humid (%) | Muggy (%) | Oppressive (%) | Miserable (%) | |
|---|---|---|---|---|---|
| 1 | 1 | 11 | 19 | 58 | 11 |
| 2 | 1 | 10 | 19 | 59 | 11 |
| 3 | 1 | 10 | 19 | 59 | 11 |
| 4 | 1 | 9 | 18 | 61 | 11 |
| 5 | 1 | 9 | 18 | 60 | 12 |
| 6 | 1 | 8 | 17 | 62 | 12 |
| 7 | 1 | 7 | 17 | 62 | 13 |
| 8 | 1 | 7 | 16 | 62 | 14 |
| 9 | 1 | 6 | 15 | 64 | 14 |
| 10 | 1 | 5 | 15 | 64 | 15 |
| 11 | 1 | 5 | 14 | 64 | 16 |
| 12 | 1 | 4 | 13 | 65 | 17 |
| 13 | 1 | 3 | 13 | 65 | 18 |
| 14 | 1 | 3 | 12 | 66 | 18 |
| 15 | 0 | 2 | 11 | 68 | 19 |
| 16 | 0 | 2 | 11 | 67 | 20 |
| 17 | 0 | 2 | 10 | 67 | 21 |
| 18 | 0 | 1 | 10 | 67 | 22 |
| 19 | 0 | 1 | 9 | 67 | 23 |
| 20 | 0 | 1 | 9 | 65 | 25 |
| 21 | 0 | 1 | 9 | 63 | 27 |
| 22 | 1 | 1 | 9 | 61 | 28 |
| 23 | 1 | 1 | 8 | 60 | 30 |
| 24 | 1 | 1 | 8 | 58 | 32 |
| 25 | 1 | 1 | 8 | 55 | 35 |
| 26 | 1 | 1 | 8 | 53 | 37 |
| 27 | 1 | 1 | 7 | 52 | 39 |
| 28 | 1 | 1 | 7 | 50 | 41 |
| 29 | 1 | 1 | 7 | 48 | 44 |
| 30 | 1 | 1 | 7 | 46 | 46 |
| 31 | 1 | 1 | 6 | 44 | 48 |
Wind in March
Winds average 8 km/h in March.
Across March, daily wind ranges from about 7 km/h on the calmest days to 8 km/h at its breeziest. It stays fairly steady from day to day.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wind speed (km/h) | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 7 | 7 |
| Feels | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm |
| Wind speed (km/h) | Feels | |
|---|---|---|
| 1 | 8 | calm |
| 2 | 8 | calm |
| 3 | 8 | calm |
| 4 | 8 | calm |
| 5 | 8 | calm |
| 6 | 8 | calm |
| 7 | 8 | calm |
| 8 | 8 | calm |
| 9 | 8 | calm |
| 10 | 8 | calm |
| 11 | 8 | calm |
| 12 | 8 | calm |
| 13 | 8 | calm |
| 14 | 8 | calm |
| 15 | 8 | calm |
| 16 | 8 | calm |
| 17 | 8 | calm |
| 18 | 8 | calm |
| 19 | 8 | calm |
| 20 | 8 | calm |
| 21 | 8 | calm |
| 22 | 8 | calm |
| 23 | 8 | calm |
| 24 | 8 | calm |
| 25 | 8 | calm |
| 26 | 8 | calm |
| 27 | 8 | calm |
| 28 | 8 | calm |
| 29 | 8 | calm |
| 30 | 7 | calm |
| 31 | 7 | calm |
Sunrise & sunset in March
Daylight runs from about 11 h 42 min at the start of March to 12 h 06 min by month's end. The lit band spans sunrise to sunset each day.
Days grow by about 24 minutes over March. Sunrise moves from 6:26 AM to 6:07 AM, and sunset from 6:09 PM to 6:12 PM.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight (h) | 11.7 | 11.7 | 11.7 | 11.8 | 11.8 | 11.8 | 11.8 | 11.8 | 11.8 | 11.8 | 11.8 | 11.9 | 11.9 | 11.9 | 11.9 | 11.9 | 11.9 | 11.9 | 11.9 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.1 | 12.1 | 12.1 | 12.1 |
| Sunrise (AM) | 6:26 | 6:26 | 6:25 | 6:25 | 6:24 | 6:23 | 6:23 | 6:22 | 6:22 | 6:21 | 6:20 | 6:20 | 6:19 | 6:18 | 6:18 | 6:17 | 6:16 | 6:16 | 6:15 | 6:14 | 6:14 | 6:13 | 6:12 | 6:11 | 6:11 | 6:10 | 6:09 | 6:09 | 6:08 | 6:07 | 6:07 |
| Sunset (PM) | 6:09 | 6:10 | 6:10 | 6:10 | 6:10 | 6:10 | 6:10 | 6:11 | 6:11 | 6:11 | 6:11 | 6:11 | 6:11 | 6:11 | 6:11 | 6:11 | 6:12 | 6:12 | 6:12 | 6:12 | 6:12 | 6:12 | 6:12 | 6:12 | 6:12 | 6:12 | 6:12 | 6:12 | 6:12 | 6:12 | 6:12 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 11.7 | 6:26 | 6:09 |
| 2 | 11.7 | 6:26 | 6:10 |
| 3 | 11.7 | 6:25 | 6:10 |
| 4 | 11.8 | 6:25 | 6:10 |
| 5 | 11.8 | 6:24 | 6:10 |
| 6 | 11.8 | 6:23 | 6:10 |
| 7 | 11.8 | 6:23 | 6:10 |
| 8 | 11.8 | 6:22 | 6:11 |
| 9 | 11.8 | 6:22 | 6:11 |
| 10 | 11.8 | 6:21 | 6:11 |
| 11 | 11.8 | 6:20 | 6:11 |
| 12 | 11.9 | 6:20 | 6:11 |
| 13 | 11.9 | 6:19 | 6:11 |
| 14 | 11.9 | 6:18 | 6:11 |
| 15 | 11.9 | 6:18 | 6:11 |
| 16 | 11.9 | 6:17 | 6:11 |
| 17 | 11.9 | 6:16 | 6:12 |
| 18 | 11.9 | 6:16 | 6:12 |
| 19 | 11.9 | 6:15 | 6:12 |
| 20 | 12.0 | 6:14 | 6:12 |
| 21 | 12.0 | 6:14 | 6:12 |
| 22 | 12.0 | 6:13 | 6:12 |
| 23 | 12.0 | 6:12 | 6:12 |
| 24 | 12.0 | 6:11 | 6:12 |
| 25 | 12.0 | 6:11 | 6:12 |
| 26 | 12.0 | 6:10 | 6:12 |
| 27 | 12.0 | 6:09 | 6:12 |
| 28 | 12.1 | 6:09 | 6:12 |
| 29 | 12.1 | 6:08 | 6:12 |
| 30 | 12.1 | 6:07 | 6:12 |
| 31 | 12.1 | 6:07 | 6:12 |
Solar energy in March
Average shortwave solar energy reaching the ground each day in March, about 6.1 kWh/m².
For context, solar energy here swings from a low near 4.62 kWh/m² to a high of 6.16 kWh/m² in April across the year — March's 6.1 kWh/m² sits near the top of that range.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Solar energy (kWh/m²) | 6.0 | 6.0 | 6.0 | 6.0 | 6.0 | 6.1 | 6.1 | 6.1 | 6.1 | 6.1 | 6.1 | 6.1 | 6.1 | 6.1 | 6.1 | 6.1 | 6.1 | 6.1 | 6.1 | 6.1 | 6.1 | 6.1 | 6.1 | 6.1 | 6.1 | 6.1 | 6.1 | 6.1 | 6.1 | 6.1 | 6.1 |
| Level | Bright | Bright | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| 1 | 6.0 | Bright |
| 2 | 6.0 | Bright |
| 3 | 6.0 | Intense |
| 4 | 6.0 | Intense |
| 5 | 6.0 | Intense |
| 6 | 6.1 | Intense |
| 7 | 6.1 | Intense |
| 8 | 6.1 | Intense |
| 9 | 6.1 | Intense |
| 10 | 6.1 | Intense |
| 11 | 6.1 | Intense |
| 12 | 6.1 | Intense |
| 13 | 6.1 | Intense |
| 14 | 6.1 | Intense |
| 15 | 6.1 | Intense |
| 16 | 6.1 | Intense |
| 17 | 6.1 | Intense |
| 18 | 6.1 | Intense |
| 19 | 6.1 | Intense |
| 20 | 6.1 | Intense |
| 21 | 6.1 | Intense |
| 22 | 6.1 | Intense |
| 23 | 6.1 | Intense |
| 24 | 6.1 | Intense |
| 25 | 6.1 | Intense |
| 26 | 6.1 | Intense |
| 27 | 6.1 | Intense |
| 28 | 6.1 | Intense |
| 29 | 6.1 | Intense |
| 30 | 6.1 | Intense |
| 31 | 6.1 | Intense |
Hazard calendar for Siem Reap
In March, Siem Reap sits inside its pacific typhoon season. The full year is below, with each hazard's peak months called out.
Siem Reap sits in the Pacific typhoon belt; the season peaks July–October.
Siem Reap's rainy season runs May–October, when most of the year's rain falls.
Is March a good time to visit Siem Reap?
Our two travel scores rate March for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
March is a weaker month for outdoor sightseeing in Siem Reap. The water and warmth also suit a beach or pool day.
What to pack for Siem Reap in March
From March's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In March, Siem Reap sees daytime highs around 34°C and nights near 26°C. Pack light clothes and sun protection. About 8 days see rain.
UV index in Siem Reap in March
Clear-sky midday UV in March peaks around 12 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Siem Reap peaks around August 16 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near November 22 at about 8 (very high).
The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 10 | 10 | 12 | 12 | 11 | 12 | 13 | 14 | 12 | 11 | 8 | 8 |
| Level | Very high | Very high | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Very high | Very high |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 10 | Very high |
| Feb | 10 | Very high |
| Mar | 12 | Extreme |
| Apr | 12 | Extreme |
| May | 11 | Extreme |
| Jun | 12 | Extreme |
| Jul | 13 | Extreme |
| Aug | 14 | Extreme |
| Sep | 12 | Extreme |
| Oct | 11 | Extreme |
| Nov | 8 | Very high |
| Dec | 8 | Very high |
Air quality in Siem Reap in March
Average fine-particle pollution (PM2.5) through the year — so you can see where March falls, not just the annual average.
Air quality in Siem Reap is worst in February — around 40 µg/m³ PM2.5 (poor), about 2.9× the cleanest month (November, 14 µg/m³).
Modeled monthly averages (CAMS reanalysis, 2015–2024).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 29 | 40 | 40 | 37 | 19 | 15 | 16 | 15 | 15 | 17 | 14 | 14 |
| Level | Moderate | Poor | Poor | Poor | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 29 | Moderate |
| Feb | 40 | Poor |
| Mar | 40 | Poor |
| Apr | 37 | Poor |
| May | 19 | Moderate |
| Jun | 15 | Moderate |
| Jul | 16 | Moderate |
| Aug | 15 | Moderate |
| Sep | 15 | Moderate |
| Oct | 17 | Moderate |
| Nov | 14 | Moderate |
| Dec | 14 | Moderate |
Where is Siem Reap?
Siem Reap sits at 13.4°N, 103.9°E, 18 m above sea level, in Cambodia. The nearest listed city is Yeang, 34 km away.
Topography around Siem Reap
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Siem Reap.
Within 3 km, the terrain around Siem Reap has only modest variations in elevation — a maximum elevation change of 28 m around an average of 17 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 123 m; within 80 km, significant variations in elevation — a maximum elevation change of 484 m.
The land around Siem Reap is covered by artificial surfaces (60%) and trees (24%) within 3 km, cropland (45%) and trees (30%) within 16 km, and cropland (48%) and trees (30%) within 80 km.
Cambodia travel facts
- Travel advisory
- Level 2
- Exercise Increased Caution
- Power plugs
- Type A / C / G
- 230 V · 50 Hz
- Prices
- ≈ 34% of US
- price level, 2025
- GDP per capita
- $2,872
- 2025
- Happiness
- 4.5 / 10
- World Happiness, 2025
- Safe drinking water
- 30%
- of population, 2024
- Homicide rate
- 1.8
- per 100k, 2011
- Road deaths
- 19.6
- per 100k/yr, 2019
- Income group
- Lower middle
- World Bank
- English
- Very low
- EF EPI 390
- Religion
Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.
Data sources
Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Siem Reap (13.3618°, 103.8606°, elevation 18 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. Tropical-cyclone seasons are the published climatological basin seasons (NOAA National Hurricane Center / regional warning centres). UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).