Sihanoukville weather in December
In December, Sihanoukville sees average daytime highs of 29°C and overnight lows near 26°C, with 44 mm of rain across 9.3 wet days and about 11.4 hours of daylight. It is the 6th-warmest and 10th-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 30% of the time in December, and the air most often feels oppressive.
Daylight stretches from about 11 h 24 min at the start of December to 11 h 24 min by month's end. Set against the rest of the year, December is Sihanoukville's 4th-clearest and 7th-windiest month. For the whole year in context, see Sihanoukville's year-round climate.
- Daytime high
- 29°
- 6th warmest
- Overnight low
- 26°
- 4th coldest
- Rainfall
- 44 mm
- 9.3 wet days
- Daylight
- 11 h 24 min
- 6:21 AM – 5:44 PM
- Cloud cover
- 60%
- 4th clearest
- Wind
- 11 km/h
- 7th windiest
- Solar energy
- 5.08 kWh/m²
- Travel score
- 5.8
- out of 10
Sihanoukville is city in Preah Sihanouk Province, Cambodia.
- Density
- 913/km²
- people per km²
- Founded
- 1964
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Temperature in December
Day-to-day highs hold fairly steady near 29°C through the month.
A typical December day in Sihanoukville reaches about 29°C in the afternoon and slips back to 26°C overnight — a 3°C spread between the day's warmth and the night's chill. On most days the high lands between 27°C and 30°C. Set against its neighbours, December runs on par with November and on par with January.
| 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) | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 |
| Avg low (°C) | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| 1 | 29 | 26 |
| 2 | 29 | 26 |
| 3 | 29 | 26 |
| 4 | 29 | 26 |
| 5 | 29 | 26 |
| 6 | 29 | 26 |
| 7 | 29 | 26 |
| 8 | 29 | 26 |
| 9 | 29 | 26 |
| 10 | 29 | 26 |
| 11 | 29 | 26 |
| 12 | 29 | 26 |
| 13 | 29 | 26 |
| 14 | 29 | 26 |
| 15 | 29 | 26 |
| 16 | 29 | 26 |
| 17 | 29 | 26 |
| 18 | 29 | 26 |
| 19 | 28 | 26 |
| 20 | 28 | 26 |
| 21 | 28 | 26 |
| 22 | 28 | 26 |
| 23 | 28 | 26 |
| 24 | 28 | 26 |
| 25 | 28 | 26 |
| 26 | 28 | 26 |
| 27 | 28 | 26 |
| 28 | 28 | 26 |
| 29 | 28 | 26 |
| 30 | 28 | 26 |
| 31 | 28 | 26 |
How December really feels in Sihanoukville
Once humidity and wind are folded in, December 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.
December sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.
Sihanoukville weather by month
How December compares with the rest of the year at a glance. December is the 6th-warmest and 10th-wettest month here — the current month is highlighted below.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 28° / 26° | 37 | 9.8 | 11.4 | 6.4 |
| Feb | 28° / 26° | 30 | 8.2 | 11.6 | 6.3 |
| Mar | 29° / 26° | 65 | 13.5 | 11.9 | 5.3 |
| Apr | 29° / 27° | 115 | 19 | 12.2 | 4.2 |
| May | 29° / 27° | 378 | 27.9 | 12.5 | 3.1 |
| Jun | 29° / 27° | 489 | 27.7 | 12.6 | 3.1 |
| Jul | 28° / 26° | 558 | 29.4 | 12.6 | 3.1 |
| Aug | 28° / 26° | 556 | 28.9 | 12.3 | 3.3 |
| Sep | 28° / 26° | 554 | 28.4 | 12.1 | 3.4 |
| Oct | 28° / 26° | 343 | 27.1 | 11.8 | 3.6 |
| Nov | 29° / 26° | 104 | 15.4 | 11.5 | 4.8 |
| Dec | 29° / 26° | 44 | 9.3 | 11.4 | 5.8 |
Cloud cover in December
The sky is clear or mostly clear about 30% of the time in December.
Beyond those clear spells, partly cloudy skies cover about 18% of December, with mostly cloudy or overcast conditions the remaining 52%. Skies tend to open up 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 (%) | 47 | 48 | 48 | 47 | 47 | 48 | 48 | 48 | 48 | 48 | 48 | 48 | 47 | 47 | 47 | 47 | 47 | 46 | 47 | 46 | 47 | 47 | 48 | 48 | 49 | 49 | 50 | 50 | 51 | 52 | 53 |
| Cloudier (%) | 53 | 52 | 52 | 53 | 53 | 52 | 52 | 52 | 52 | 52 | 52 | 52 | 53 | 53 | 53 | 53 | 53 | 54 | 53 | 54 | 53 | 53 | 52 | 52 | 51 | 51 | 50 | 50 | 49 | 48 | 47 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 47 | 53 |
| 2 | 48 | 52 |
| 3 | 48 | 52 |
| 4 | 47 | 53 |
| 5 | 47 | 53 |
| 6 | 48 | 52 |
| 7 | 48 | 52 |
| 8 | 48 | 52 |
| 9 | 48 | 52 |
| 10 | 48 | 52 |
| 11 | 48 | 52 |
| 12 | 48 | 52 |
| 13 | 47 | 53 |
| 14 | 47 | 53 |
| 15 | 47 | 53 |
| 16 | 47 | 53 |
| 17 | 47 | 53 |
| 18 | 46 | 54 |
| 19 | 47 | 53 |
| 20 | 46 | 54 |
| 21 | 47 | 53 |
| 22 | 47 | 53 |
| 23 | 48 | 52 |
| 24 | 48 | 52 |
| 25 | 49 | 51 |
| 26 | 49 | 51 |
| 27 | 50 | 50 |
| 28 | 50 | 50 |
| 29 | 51 | 49 |
| 30 | 52 | 48 |
| 31 | 53 | 47 |
Chance of precipitation in December
Sihanoukville gets around 44 mm of rain over 9.3 wet days in December. The line is the day-by-day chance of measurable precipitation.
Day to day, the chance of measurable rain averages around 30% and peaks near 38% on the wettest days. The odds ease 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 (%) | 38 | 37 | 37 | 36 | 35 | 34 | 34 | 33 | 32 | 32 | 31 | 30 | 30 | 29 | 29 | 28 | 28 | 28 | 28 | 27 | 27 | 27 | 27 | 26 | 26 | 26 | 26 | 26 | 27 | 27 | 27 |
| Rain chance (%) | |
|---|---|
| 1 | 38 |
| 2 | 37 |
| 3 | 37 |
| 4 | 36 |
| 5 | 35 |
| 6 | 34 |
| 7 | 34 |
| 8 | 33 |
| 9 | 32 |
| 10 | 32 |
| 11 | 31 |
| 12 | 30 |
| 13 | 30 |
| 14 | 29 |
| 15 | 29 |
| 16 | 28 |
| 17 | 28 |
| 18 | 28 |
| 19 | 28 |
| 20 | 27 |
| 21 | 27 |
| 22 | 27 |
| 23 | 27 |
| 24 | 26 |
| 25 | 26 |
| 26 | 26 |
| 27 | 26 |
| 28 | 26 |
| 29 | 27 |
| 30 | 27 |
| 31 | 27 |
Humidity in December
Most of December feels oppressive — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, December lands in the oppressive band about 62% 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 (%) | 0 | 0 | 0 | 0 | 0 | 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 |
| Humid (%) | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 4 | 4 | 4 | 5 | 5 | 5 | 6 | 6 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 |
| Muggy (%) | 17 | 18 | 18 | 19 | 20 | 20 | 21 | 22 | 22 | 23 | 23 | 24 | 25 | 25 | 26 | 27 | 27 | 28 | 28 | 29 | 29 | 29 | 29 | 29 | 29 | 28 | 28 | 27 | 26 | 25 | 24 |
| Oppressive (%) | 67 | 67 | 67 | 67 | 66 | 67 | 66 | 66 | 66 | 66 | 66 | 65 | 65 | 65 | 62 | 61 | 61 | 59 | 59 | 58 | 57 | 57 | 56 | 56 | 57 | 58 | 59 | 60 | 62 | 63 | 64 |
| Miserable (%) | 13 | 12 | 12 | 11 | 11 | 10 | 10 | 9 | 9 | 8 | 8 | 8 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 6 | 6 | 5 | 5 | 4 | 4 | 4 |
| Comfortable (%) | Humid (%) | Muggy (%) | Oppressive (%) | Miserable (%) | |
|---|---|---|---|---|---|
| 1 | 0 | 3 | 17 | 67 | 13 |
| 2 | 0 | 3 | 18 | 67 | 12 |
| 3 | 0 | 3 | 18 | 67 | 12 |
| 4 | 0 | 3 | 19 | 67 | 11 |
| 5 | 0 | 3 | 20 | 66 | 11 |
| 6 | 0 | 3 | 20 | 67 | 10 |
| 7 | 0 | 3 | 21 | 66 | 10 |
| 8 | 0 | 3 | 22 | 66 | 9 |
| 9 | 0 | 3 | 22 | 66 | 9 |
| 10 | 0 | 3 | 23 | 66 | 8 |
| 11 | 0 | 3 | 23 | 66 | 8 |
| 12 | 0 | 3 | 24 | 65 | 8 |
| 13 | 0 | 3 | 25 | 65 | 7 |
| 14 | 0 | 3 | 25 | 65 | 7 |
| 15 | 1 | 4 | 26 | 62 | 7 |
| 16 | 1 | 4 | 27 | 61 | 7 |
| 17 | 1 | 4 | 27 | 61 | 7 |
| 18 | 1 | 5 | 28 | 59 | 7 |
| 19 | 1 | 5 | 28 | 59 | 7 |
| 20 | 1 | 5 | 29 | 58 | 7 |
| 21 | 1 | 6 | 29 | 57 | 7 |
| 22 | 1 | 6 | 29 | 57 | 7 |
| 23 | 1 | 7 | 29 | 56 | 7 |
| 24 | 1 | 7 | 29 | 56 | 7 |
| 25 | 1 | 7 | 29 | 57 | 6 |
| 26 | 1 | 7 | 28 | 58 | 6 |
| 27 | 1 | 7 | 28 | 59 | 5 |
| 28 | 1 | 7 | 27 | 60 | 5 |
| 29 | 1 | 7 | 26 | 62 | 4 |
| 30 | 1 | 7 | 25 | 63 | 4 |
| 31 | 1 | 7 | 24 | 64 | 4 |
Wind in December
Winds average 11 km/h in December.
Across December, daily wind ranges from about 11 km/h on the calmest days to 11 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) | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 |
| 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 | 11 | calm |
| 2 | 11 | calm |
| 3 | 11 | calm |
| 4 | 11 | calm |
| 5 | 11 | calm |
| 6 | 11 | calm |
| 7 | 11 | calm |
| 8 | 11 | calm |
| 9 | 11 | calm |
| 10 | 11 | calm |
| 11 | 11 | calm |
| 12 | 11 | calm |
| 13 | 11 | calm |
| 14 | 11 | calm |
| 15 | 11 | calm |
| 16 | 11 | calm |
| 17 | 11 | calm |
| 18 | 11 | calm |
| 19 | 11 | calm |
| 20 | 11 | calm |
| 21 | 11 | calm |
| 22 | 11 | calm |
| 23 | 11 | calm |
| 24 | 11 | calm |
| 25 | 11 | calm |
| 26 | 11 | calm |
| 27 | 11 | calm |
| 28 | 11 | calm |
| 29 | 11 | calm |
| 30 | 11 | calm |
| 31 | 11 | calm |
Sunrise & sunset in December
Daylight runs from about 11 h 24 min at the start of December to 11 h 24 min by month's end. The lit band spans sunrise to sunset each day.
Days grow by about 0 minutes over December. Sunrise moves from 6:13 AM to 6:27 AM, and sunset from 5:38 PM to 5:51 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) | 11.4 | 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 | 11.4 | 11.4 | 11.4 | 11.4 | 11.4 | 11.4 | 11.4 | 11.4 | 11.4 | 11.4 | 11.4 | 11.4 |
| Sunrise (AM) | 6:13 | 6:13 | 6:14 | 6:14 | 6:15 | 6:15 | 6:16 | 6:16 | 6:17 | 6:18 | 6:18 | 6:19 | 6:19 | 6:20 | 6:20 | 6:21 | 6:21 | 6:22 | 6:22 | 6:23 | 6:23 | 6:23 | 6:24 | 6:24 | 6:25 | 6:25 | 6:26 | 6:26 | 6:27 | 6:27 | 6:27 |
| Sunset (PM) | 5:38 | 5:39 | 5:39 | 5:39 | 5:39 | 5:40 | 5:40 | 5:40 | 5:41 | 5:41 | 5:42 | 5:42 | 5:42 | 5:43 | 5:43 | 5:44 | 5:44 | 5:44 | 5:45 | 5:45 | 5:46 | 5:46 | 5:47 | 5:47 | 5:48 | 5:48 | 5:49 | 5:49 | 5:50 | 5:50 | 5:51 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 11.4 | 6:13 | 5:38 |
| 2 | 11.4 | 6:13 | 5:39 |
| 3 | 11.4 | 6:14 | 5:39 |
| 4 | 11.4 | 6:14 | 5:39 |
| 5 | 11.4 | 6:15 | 5:39 |
| 6 | 11.4 | 6:15 | 5:40 |
| 7 | 11.4 | 6:16 | 5:40 |
| 8 | 11.4 | 6:16 | 5:40 |
| 9 | 11.4 | 6:17 | 5:41 |
| 10 | 11.4 | 6:18 | 5:41 |
| 11 | 11.4 | 6:18 | 5:42 |
| 12 | 11.4 | 6:19 | 5:42 |
| 13 | 11.4 | 6:19 | 5:42 |
| 14 | 11.4 | 6:20 | 5:43 |
| 15 | 11.4 | 6:20 | 5:43 |
| 16 | 11.4 | 6:21 | 5:44 |
| 17 | 11.4 | 6:21 | 5:44 |
| 18 | 11.4 | 6:22 | 5:44 |
| 19 | 11.4 | 6:22 | 5:45 |
| 20 | 11.4 | 6:23 | 5:45 |
| 21 | 11.4 | 6:23 | 5:46 |
| 22 | 11.4 | 6:23 | 5:46 |
| 23 | 11.4 | 6:24 | 5:47 |
| 24 | 11.4 | 6:24 | 5:47 |
| 25 | 11.4 | 6:25 | 5:48 |
| 26 | 11.4 | 6:25 | 5:48 |
| 27 | 11.4 | 6:26 | 5:49 |
| 28 | 11.4 | 6:26 | 5:49 |
| 29 | 11.4 | 6:27 | 5:50 |
| 30 | 11.4 | 6:27 | 5:50 |
| 31 | 11.4 | 6:27 | 5:51 |
Solar energy in December
Average shortwave solar energy reaching the ground each day in December, about 5.08 kWh/m².
For context, solar energy here swings from a low near 4.56 kWh/m² to a high of 6.26 kWh/m² in March across the year — December's 5.08 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 | 5.1 | 5.1 | 5.1 | 5.1 | 5.1 | 5.1 | 5.1 | 5.1 | 5.1 | 5.1 | 5.1 | 5.1 | 5.1 | 5.1 | 5.1 | 5.1 | 5.1 | 5.1 | 5.1 | 5.1 | 5.1 | 5.2 |
| 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 | 5.1 | Bright |
| 11 | 5.1 | Bright |
| 12 | 5.1 | Bright |
| 13 | 5.1 | Bright |
| 14 | 5.1 | Bright |
| 15 | 5.1 | Bright |
| 16 | 5.1 | Bright |
| 17 | 5.1 | Bright |
| 18 | 5.1 | Bright |
| 19 | 5.1 | Bright |
| 20 | 5.1 | Bright |
| 21 | 5.1 | Bright |
| 22 | 5.1 | Bright |
| 23 | 5.1 | Bright |
| 24 | 5.1 | Bright |
| 25 | 5.1 | Bright |
| 26 | 5.1 | Bright |
| 27 | 5.1 | Bright |
| 28 | 5.1 | Bright |
| 29 | 5.1 | Bright |
| 30 | 5.1 | Bright |
| 31 | 5.2 | Bright |
Hazard calendar for Sihanoukville
In December, Sihanoukville sits inside its pacific typhoon season. The full year is below, with each hazard's peak months called out.
Sihanoukville sits in the Pacific typhoon belt; the season peaks July–October.
Sihanoukville's monsoon runs May–October, when most of the year's rain falls.
Is December a good time to visit Sihanoukville?
Our two travel scores rate December for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
December is a reasonable time to visit Sihanoukville for sightseeing. The water and warmth also suit a beach or pool day.
What to pack for Sihanoukville in December
From December's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In December, Sihanoukville sees daytime highs around 29°C and nights near 26°C. Pack light clothes. Worth having: rain gear and sun protection. About 9 days see rain.
Sea temperature near Sihanoukville in December
The nearest coast averages about 29°C in December — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea offshore 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 | 28 | 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 | 28 | 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 Sihanoukville in December
Clear-sky midday UV in December peaks around 9 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Sihanoukville peaks around August 18 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 12 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 Sihanoukville in December
Average fine-particle pollution (PM2.5) through the year — so you can see where December falls, not just the annual average.
Air quality in Sihanoukville is worst in February — around 24 µg/m³ PM2.5 (moderate), about 2.3× the cleanest month (September, 10 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) | 20 | 24 | 19 | 17 | 12 | 12 | 14 | 11 | 10 | 11 | 12 | 15 |
| Level | Moderate | Moderate | Moderate | Moderate | Moderate | Good | Moderate | Good | Good | Good | Good | Moderate |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 20 | Moderate |
| Feb | 24 | Moderate |
| Mar | 19 | Moderate |
| Apr | 17 | Moderate |
| May | 12 | Moderate |
| Jun | 12 | Good |
| Jul | 14 | Moderate |
| Aug | 11 | Good |
| Sep | 10 | Good |
| Oct | 11 | Good |
| Nov | 12 | Good |
| Dec | 15 | Moderate |
Where is Sihanoukville?
Sihanoukville sits at 10.6°N, 103.5°E, 6 m above sea level, in Cambodia. The nearest listed city is Phu Quoc, 65 km away.
Topography around Sihanoukville
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Sihanoukville.
Within 3 km, the terrain around Sihanoukville has only modest variations in elevation — a maximum elevation change of 124 m around an average of 21 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 288 m; within 80 km, large variations in elevation — a maximum elevation change of 1,064 m.
The land around Sihanoukville is covered by artificial surfaces (36%) and water (28%) within 3 km, water (62%) and trees (20%) within 16 km, and water (63%) and trees (26%) 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 Sihanoukville (10.6093°, 103.5296°, elevation 6 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).