Smach Mean Chey weather in January
In January, Smach Mean Chey sees average daytime highs of 29°C and overnight lows near 23°C, with 40 mm of rain across 8 wet days and about 11.4 hours of daylight. It is the 6th-warmest and 11th-wettest month of the year here.
Day-to-day highs hold fairly steady near 29°C through the month. The sky is clear or mostly clear about 37% of the time in January, and the air most often feels oppressive.
Daylight stretches from about 11 h 18 min at the start of January to 11 h 30 min by month's end. Set against the rest of the year, January is Smach Mean Chey's 2nd-clearest and 7th-windiest month. For the whole year in context, see Smach Mean Chey's year-round climate.
- Daytime high
- 29°
- 6th warmest
- Overnight low
- 23°
- 1st coldest
- Rainfall
- 40 mm
- 8 wet days
- Daylight
- 11 h 24 min
- 6:35 AM – 5:59 PM
- Cloud cover
- 52%
- 2nd clearest
- Wind
- 7 km/h
- 7th windiest
- Solar energy
- 5.22 kWh/m²
- Travel score
- 5.6
- out of 10
Temperature in January
Day-to-day highs hold fairly steady near 29°C through the month.
A typical January day in Smach Mean Chey reaches about 29°C in the afternoon and slips back to 23°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between 28°C and 31°C. Set against its neighbours, January runs on par with December and on par with February.
| 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) | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 |
| Avg low (°C) | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 24 | 24 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| 1 | 30 | 24 |
| 2 | 30 | 24 |
| 3 | 30 | 24 |
| 4 | 30 | 24 |
| 5 | 30 | 24 |
| 6 | 30 | 24 |
| 7 | 30 | 24 |
| 8 | 30 | 24 |
| 9 | 29 | 23 |
| 10 | 29 | 23 |
| 11 | 29 | 23 |
| 12 | 29 | 23 |
| 13 | 29 | 23 |
| 14 | 29 | 23 |
| 15 | 29 | 23 |
| 16 | 29 | 23 |
| 17 | 29 | 23 |
| 18 | 29 | 23 |
| 19 | 29 | 23 |
| 20 | 29 | 23 |
| 21 | 29 | 23 |
| 22 | 29 | 23 |
| 23 | 29 | 23 |
| 24 | 29 | 23 |
| 25 | 29 | 23 |
| 26 | 29 | 23 |
| 27 | 29 | 23 |
| 28 | 29 | 23 |
| 29 | 29 | 23 |
| 30 | 29 | 24 |
| 31 | 29 | 24 |
How January really feels in Smach Mean Chey
Once humidity and wind are folded in, January averages 0 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.
January sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.
Smach Mean Chey weather by month
How January compares with the rest of the year at a glance. January is the 6th-warmest and 11th-wettest month here — the current month is highlighted below.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 29° / 23° | 40 | 8 | 11.4 | 5.6 |
| Feb | 29° / 24° | 46 | 10.1 | 11.6 | 5.4 |
| Mar | 30° / 25° | 104 | 18.4 | 11.9 | 4.3 |
| Apr | 30° / 25° | 144 | 23.1 | 12.2 | 3.4 |
| May | 29° / 26° | 363 | 29 | 12.5 | 2.9 |
| Jun | 29° / 25° | 515 | 28.9 | 12.7 | 3.0 |
| Jul | 28° / 25° | 614 | 30.1 | 12.6 | 3.2 |
| Aug | 28° / 25° | 596 | 30.3 | 12.4 | 3.2 |
| Sep | 28° / 25° | 520 | 29.3 | 12.1 | 3.2 |
| Oct | 29° / 25° | 310 | 26.7 | 11.7 | 3.4 |
| Nov | 30° / 25° | 82 | 13.9 | 11.5 | 4.5 |
| Dec | 30° / 24° | 31 | 6.7 | 11.3 | 5.4 |
Cloud cover in January
The sky is clear or mostly clear about 37% of the time in January.
Beyond those clear spells, partly cloudy skies cover about 24% of January, with mostly cloudy or overcast conditions the remaining 39%.
| 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 (%) | 59 | 60 | 60 | 61 | 61 | 61 | 61 | 61 | 61 | 61 | 61 | 61 | 60 | 60 | 60 | 60 | 60 | 60 | 59 | 59 | 60 | 60 | 60 | 61 | 60 | 61 | 62 | 62 | 62 | 63 | 64 |
| Cloudier (%) | 41 | 40 | 40 | 39 | 39 | 39 | 39 | 39 | 39 | 39 | 39 | 39 | 40 | 40 | 40 | 40 | 40 | 40 | 41 | 41 | 40 | 40 | 40 | 39 | 40 | 39 | 38 | 38 | 38 | 37 | 36 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 59 | 41 |
| 2 | 60 | 40 |
| 3 | 60 | 40 |
| 4 | 61 | 39 |
| 5 | 61 | 39 |
| 6 | 61 | 39 |
| 7 | 61 | 39 |
| 8 | 61 | 39 |
| 9 | 61 | 39 |
| 10 | 61 | 39 |
| 11 | 61 | 39 |
| 12 | 61 | 39 |
| 13 | 60 | 40 |
| 14 | 60 | 40 |
| 15 | 60 | 40 |
| 16 | 60 | 40 |
| 17 | 60 | 40 |
| 18 | 60 | 40 |
| 19 | 59 | 41 |
| 20 | 59 | 41 |
| 21 | 60 | 40 |
| 22 | 60 | 40 |
| 23 | 60 | 40 |
| 24 | 61 | 39 |
| 25 | 60 | 40 |
| 26 | 61 | 39 |
| 27 | 62 | 38 |
| 28 | 62 | 38 |
| 29 | 62 | 38 |
| 30 | 63 | 37 |
| 31 | 64 | 36 |
Chance of precipitation in January
Smach Mean Chey gets around 40 mm of rain over 8 wet days in January. 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 28% on the wettest days.
| 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 (%) | 21 | 21 | 22 | 22 | 23 | 23 | 24 | 24 | 25 | 25 | 25 | 26 | 26 | 26 | 26 | 27 | 27 | 27 | 27 | 28 | 28 | 28 | 28 | 28 | 27 | 27 | 27 | 27 | 27 | 26 | 26 |
| Rain chance (%) | |
|---|---|
| 1 | 21 |
| 2 | 21 |
| 3 | 22 |
| 4 | 22 |
| 5 | 23 |
| 6 | 23 |
| 7 | 24 |
| 8 | 24 |
| 9 | 25 |
| 10 | 25 |
| 11 | 25 |
| 12 | 26 |
| 13 | 26 |
| 14 | 26 |
| 15 | 26 |
| 16 | 27 |
| 17 | 27 |
| 18 | 27 |
| 19 | 27 |
| 20 | 28 |
| 21 | 28 |
| 22 | 28 |
| 23 | 28 |
| 24 | 28 |
| 25 | 27 |
| 26 | 27 |
| 27 | 27 |
| 28 | 27 |
| 29 | 27 |
| 30 | 26 |
| 31 | 26 |
Humidity in January
Most of January feels oppressive — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, January lands in the oppressive band about 62% of days. Sticky, muggy-or-worse air turns up on roughly 86% 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dry (%) | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
| Comfortable (%) | 3 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 |
| Humid (%) | 14 | 14 | 13 | 13 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 11 | 11 | 11 | 11 | 10 | 10 | 9 | 9 | 8 | 8 | 8 | 8 | 8 | 7 |
| Muggy (%) | 31 | 31 | 30 | 30 | 29 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 22 | 21 | 20 | 20 | 19 | 19 | 19 | 19 | 20 | 20 | 20 | 21 | 21 | 22 | 22 | 22 | 22 | 23 |
| Oppressive (%) | 50 | 53 | 55 | 55 | 57 | 57 | 58 | 58 | 59 | 60 | 60 | 61 | 62 | 62 | 63 | 64 | 64 | 66 | 66 | 66 | 66 | 66 | 65 | 66 | 65 | 67 | 66 | 66 | 66 | 66 | 66 |
| Miserable (%) | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Dry (%) | Comfortable (%) | Humid (%) | Muggy (%) | Oppressive (%) | Miserable (%) | |
|---|---|---|---|---|---|---|
| 1 | 1 | 3 | 14 | 31 | 50 | 1 |
| 2 | 0 | 2 | 14 | 31 | 53 | 0 |
| 3 | 0 | 2 | 13 | 30 | 55 | 0 |
| 4 | 0 | 2 | 13 | 30 | 55 | 0 |
| 5 | 0 | 2 | 12 | 29 | 57 | 0 |
| 6 | 0 | 2 | 12 | 29 | 57 | 0 |
| 7 | 0 | 2 | 12 | 28 | 58 | 0 |
| 8 | 1 | 2 | 12 | 27 | 58 | 0 |
| 9 | 1 | 2 | 12 | 26 | 59 | 0 |
| 10 | 1 | 2 | 12 | 25 | 60 | 0 |
| 11 | 1 | 2 | 12 | 24 | 60 | 1 |
| 12 | 1 | 2 | 12 | 23 | 61 | 1 |
| 13 | 1 | 2 | 12 | 22 | 62 | 1 |
| 14 | 1 | 2 | 12 | 22 | 62 | 1 |
| 15 | 1 | 2 | 12 | 21 | 63 | 1 |
| 16 | 1 | 2 | 12 | 20 | 64 | 1 |
| 17 | 1 | 2 | 12 | 20 | 64 | 1 |
| 18 | 1 | 2 | 11 | 19 | 66 | 1 |
| 19 | 1 | 2 | 11 | 19 | 66 | 1 |
| 20 | 1 | 2 | 11 | 19 | 66 | 1 |
| 21 | 1 | 2 | 11 | 19 | 66 | 1 |
| 22 | 1 | 2 | 10 | 20 | 66 | 1 |
| 23 | 1 | 3 | 10 | 20 | 65 | 1 |
| 24 | 1 | 3 | 9 | 20 | 66 | 1 |
| 25 | 1 | 3 | 9 | 21 | 65 | 1 |
| 26 | 0 | 3 | 8 | 21 | 67 | 1 |
| 27 | 0 | 3 | 8 | 22 | 66 | 1 |
| 28 | 0 | 3 | 8 | 22 | 66 | 1 |
| 29 | 0 | 3 | 8 | 22 | 66 | 1 |
| 30 | 0 | 3 | 8 | 22 | 66 | 1 |
| 31 | 0 | 3 | 7 | 23 | 66 | 1 |
Wind in January
Winds average 7 km/h in January.
Across January, 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 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 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 | 7 | calm |
| 6 | 7 | calm |
| 7 | 7 | calm |
| 8 | 7 | calm |
| 9 | 7 | calm |
| 10 | 7 | calm |
| 11 | 7 | calm |
| 12 | 7 | calm |
| 13 | 7 | calm |
| 14 | 7 | calm |
| 15 | 7 | calm |
| 16 | 7 | calm |
| 17 | 7 | calm |
| 18 | 7 | calm |
| 19 | 7 | calm |
| 20 | 7 | calm |
| 21 | 7 | calm |
| 22 | 7 | calm |
| 23 | 7 | calm |
| 24 | 7 | calm |
| 25 | 7 | calm |
| 26 | 7 | calm |
| 27 | 7 | calm |
| 28 | 7 | calm |
| 29 | 7 | calm |
| 30 | 7 | calm |
| 31 | 7 | calm |
Sunrise & sunset in January
Daylight runs from about 11 h 18 min at the start of January to 11 h 30 min by month's end. The lit band spans sunrise to sunset each day.
Days grow by about 12 minutes over January. Sunrise moves from 6:31 AM to 6:37 AM, and sunset from 5:51 PM to 6:06 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) | 11.3 | 11.3 | 11.3 | 11.3 | 11.3 | 11.3 | 11.4 | 11.4 | 11.4 | 11.4 | 11.4 | 11.4 | 11.4 | 11.4 | 11.4 | 11.4 | 11.4 | 11.4 | 11.4 | 11.4 | 11.4 | 11.4 | 11.4 | 11.4 | 11.4 | 11.5 | 11.5 | 11.5 | 11.5 | 11.5 | 11.5 |
| Sunrise (AM) | 6:31 | 6:31 | 6:32 | 6:32 | 6:32 | 6:33 | 6:33 | 6:33 | 6:34 | 6:34 | 6:34 | 6:35 | 6:35 | 6:35 | 6:35 | 6:35 | 6:36 | 6:36 | 6:36 | 6:36 | 6:36 | 6:36 | 6:36 | 6:36 | 6:37 | 6:37 | 6:37 | 6:37 | 6:37 | 6:37 | 6:37 |
| Sunset (PM) | 5:51 | 5:52 | 5:52 | 5:53 | 5:53 | 5:54 | 5:54 | 5:55 | 5:55 | 5:56 | 5:56 | 5:57 | 5:57 | 5:58 | 5:58 | 5:59 | 5:59 | 6:00 | 6:00 | 6:01 | 6:01 | 6:02 | 6:02 | 6:03 | 6:03 | 6:04 | 6:04 | 6:05 | 6:05 | 6:05 | 6:06 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 11.3 | 6:31 | 5:51 |
| 2 | 11.3 | 6:31 | 5:52 |
| 3 | 11.3 | 6:32 | 5:52 |
| 4 | 11.3 | 6:32 | 5:53 |
| 5 | 11.3 | 6:32 | 5:53 |
| 6 | 11.3 | 6:33 | 5:54 |
| 7 | 11.4 | 6:33 | 5:54 |
| 8 | 11.4 | 6:33 | 5:55 |
| 9 | 11.4 | 6:34 | 5:55 |
| 10 | 11.4 | 6:34 | 5:56 |
| 11 | 11.4 | 6:34 | 5:56 |
| 12 | 11.4 | 6:35 | 5:57 |
| 13 | 11.4 | 6:35 | 5:57 |
| 14 | 11.4 | 6:35 | 5:58 |
| 15 | 11.4 | 6:35 | 5:58 |
| 16 | 11.4 | 6:35 | 5:59 |
| 17 | 11.4 | 6:36 | 5:59 |
| 18 | 11.4 | 6:36 | 6:00 |
| 19 | 11.4 | 6:36 | 6:00 |
| 20 | 11.4 | 6:36 | 6:01 |
| 21 | 11.4 | 6:36 | 6:01 |
| 22 | 11.4 | 6:36 | 6:02 |
| 23 | 11.4 | 6:36 | 6:02 |
| 24 | 11.4 | 6:36 | 6:03 |
| 25 | 11.4 | 6:37 | 6:03 |
| 26 | 11.5 | 6:37 | 6:04 |
| 27 | 11.5 | 6:37 | 6:04 |
| 28 | 11.5 | 6:37 | 6:05 |
| 29 | 11.5 | 6:37 | 6:05 |
| 30 | 11.5 | 6:37 | 6:05 |
| 31 | 11.5 | 6:37 | 6:06 |
Solar energy in January
Average shortwave solar energy reaching the ground each day in January, about 5.22 kWh/m².
For context, solar energy here swings from a low near 4.01 kWh/m² to a high of 5.9 kWh/m² in April across the year — January's 5.22 kWh/m² falls in the middle.
| 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) | 5.1 | 5.1 | 5.1 | 5.1 | 5.1 | 5.1 | 5.1 | 5.1 | 5.1 | 5.2 | 5.2 | 5.2 | 5.2 | 5.2 | 5.2 | 5.2 | 5.2 | 5.2 | 5.3 | 5.3 | 5.3 | 5.3 | 5.3 | 5.3 | 5.3 | 5.3 | 5.4 | 5.4 | 5.4 | 5.4 | 5.4 |
| Level | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| 1 | 5.1 | Bright |
| 2 | 5.1 | Bright |
| 3 | 5.1 | Bright |
| 4 | 5.1 | Bright |
| 5 | 5.1 | Bright |
| 6 | 5.1 | Bright |
| 7 | 5.1 | Bright |
| 8 | 5.1 | Bright |
| 9 | 5.1 | Bright |
| 10 | 5.2 | Bright |
| 11 | 5.2 | Bright |
| 12 | 5.2 | Bright |
| 13 | 5.2 | Bright |
| 14 | 5.2 | Bright |
| 15 | 5.2 | Bright |
| 16 | 5.2 | Bright |
| 17 | 5.2 | Bright |
| 18 | 5.2 | Bright |
| 19 | 5.3 | Bright |
| 20 | 5.3 | Bright |
| 21 | 5.3 | Bright |
| 22 | 5.3 | Bright |
| 23 | 5.3 | Bright |
| 24 | 5.3 | Bright |
| 25 | 5.3 | Bright |
| 26 | 5.3 | Bright |
| 27 | 5.4 | Bright |
| 28 | 5.4 | Bright |
| 29 | 5.4 | Bright |
| 30 | 5.4 | Bright |
| 31 | 5.4 | Bright |
Hazard calendar for Smach Mean Chey
In January, Smach Mean Chey sits inside its pacific typhoon season. The full year is below, with each hazard's peak months called out.
Smach Mean Chey sits in the Pacific typhoon belt; the season peaks July–October.
Smach Mean Chey's monsoon runs May–October, when most of the year's rain falls.
Is January a good time to visit Smach Mean Chey?
Our two travel scores rate January for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
January is a reasonable time to visit Smach Mean Chey for sightseeing. The water and warmth also suit a beach or pool day.
What to pack for Smach Mean Chey in January
From January's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In January, Smach Mean Chey sees daytime highs around 29°C and nights near 23°C. Pack light clothes. Worth having: rain gear and sun protection. About 8 days see rain.
Sea temperature near Smach Mean Chey in January
The nearest coast averages about 28°C in January — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea at the nearest coast (about 20 km away) is warmest in May at about 31°C and coldest in January near 28°C.
The water stays above 20°C all year — warm enough for a swim any month.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 28 | 29 | 29 | 30 | 31 | 30 | 29 | 29 | 29 | 29 | 29 | 29 |
| Comfort | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 28 | Tropical |
| Feb | 29 | Tropical |
| Mar | 29 | Tropical |
| Apr | 30 | Tropical |
| May | 31 | Tropical |
| Jun | 30 | Tropical |
| Jul | 29 | Tropical |
| Aug | 29 | Tropical |
| Sep | 29 | Tropical |
| Oct | 29 | Tropical |
| Nov | 29 | Tropical |
| Dec | 29 | Tropical |
UV index in Smach Mean Chey in January
Clear-sky midday UV in January peaks around 10 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Smach Mean Chey peaks around August 18 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 11 at about 9 (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 | 11 | 12 | 12 | 11 | 12 | 12 | 14 | 13 | 11 | 9 | 9 |
| Level | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Very high | Very high |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 10 | Extreme |
| Feb | 11 | Extreme |
| Mar | 12 | Extreme |
| Apr | 12 | Extreme |
| May | 11 | Extreme |
| Jun | 12 | Extreme |
| Jul | 12 | Extreme |
| Aug | 14 | Extreme |
| Sep | 13 | Extreme |
| Oct | 11 | Extreme |
| Nov | 9 | Very high |
| Dec | 9 | Very high |
Air quality in Smach Mean Chey in January
Average fine-particle pollution (PM2.5) through the year — so you can see where January falls, not just the annual average.
Air quality in Smach Mean Chey is worst in February — around 24 µg/m³ PM2.5 (moderate), about 2.7× the cleanest month (November, 9 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) | 19 | 24 | 19 | 16 | 12 | 12 | 14 | 12 | 10 | 10 | 9 | 11 |
| Level | Moderate | Moderate | Moderate | Moderate | Moderate | Good | Moderate | Good | Good | Good | Good | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 19 | Moderate |
| Feb | 24 | Moderate |
| Mar | 19 | Moderate |
| Apr | 16 | Moderate |
| May | 12 | Moderate |
| Jun | 12 | Good |
| Jul | 14 | Moderate |
| Aug | 12 | Good |
| Sep | 10 | Good |
| Oct | 10 | Good |
| Nov | 9 | Good |
| Dec | 11 | Good |
Where is Smach Mean Chey?
Smach Mean Chey sits at 11.5°N, 103.0°E, 5 m above sea level, in Cambodia. The nearest listed city is Koh Kong, 10 km away.
Topography around Smach Mean Chey
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Smach Mean Chey.
Within 3 km, the terrain around Smach Mean Chey has only modest variations in elevation — a maximum elevation change of 57 m around an average of 4 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 480 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,727 m.
The land around Smach Mean Chey is covered by mangroves (43%) and water (34%) within 3 km, trees (39%) and water (35%) within 16 km, and trees (51%) and water (43%) 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 Smach Mean Chey (11.5466°, 103.0357°, elevation 5 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). Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. 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).