Best time to visit Koh Rong
Month-by-month weather averages for Koh Rong.
Koh Rong, Preah Sihanouk, Cambodia
°C
mm
- Average daily high and low
- Precipitation
- Good month
- Best month
- Made good or best by an event
| Month | Average daily high | Average daily low | Precipitation | Verdict |
|---|---|---|---|---|
| January | 27.7 °C / 82 °F | 25.8 °C / 78 °F | 37 mm / 1.5 in | good month |
| February | 27.7 °C / 82 °F | 26 °C / 79 °F | 37 mm / 1.5 in | neither best nor good |
| March | 28.3 °C / 83 °F | 26.5 °C / 80 °F | 74 mm / 2.9 in | neither best nor good |
| April | 29 °C / 84 °F | 27.2 °C / 81 °F | 115 mm / 4.5 in | neither best nor good |
| May | 29.1 °C / 84 °F | 27.1 °C / 81 °F | 353 mm / 13.9 in | neither best nor good |
| June | 28.6 °C / 83 °F | 26.6 °C / 80 °F | 434 mm / 17.1 in | neither best nor good |
| July | 28.1 °C / 83 °F | 26.3 °C / 79 °F | 542 mm / 21.3 in | neither best nor good |
| August | 28 °C / 82 °F | 26.2 °C / 79 °F | 455 mm / 17.9 in | neither best nor good |
| September | 27.8 °C / 82 °F | 26.1 °C / 79 °F | 533 mm / 21 in | neither best nor good |
| October | 28 °C / 82 °F | 26.2 °C / 79 °F | 339 mm / 13.4 in | neither best nor good |
| November | 28.6 °C / 83 °F | 26.6 °C / 80 °F | 107 mm / 4.2 in | neither best nor good |
| December | 28.4 °C / 83 °F | 26.2 °C / 79 °F | 45 mm / 1.8 in | good month |
Good and best months depend on more than temperature, rain and events. How they are chosen
Each activity on this page has its own good and best months, rated on twenty years of daily weather records. Which measures count, and how much, depends on the activity: humidity for exploring outdoors, wind for the beach, hiking and skiing, snow for skiing alone. Between them, the activities are rated on:
- Daytime highs
- Night-time lows
- How warm it feels
- Humidity
- How much of the day is sunny
- Hours of daylight
- Monthly rainfall
- How many days it rains
- Days of heavy rain
- Wind
- Snowfall and days with snow
- Major events, such as festivals
The chart shows the good and best months for exploring outdoors.
The event icon marks a month that an event lifts to good or best, such as a festival or a natural spectacle. Choose “Weather only” in the toolbar to rate the months on weather alone.
Best months by activity
Exploring outdoors
Mild days and nights, mostly dry and bright. The default for 'when should I go'.
- JJanuary: good
- FFebruary: neither
- MMarch: neither
- AApril: neither
- MMay: neither
- JJune: neither
- JJuly: neither
- AAugust: neither
- SSeptember: neither
- OOctober: neither
- NNovember: neither
- DDecember: good
- Good
- December–January
Why these months
January · good
In its favour: precipitation 37 mm / 1.5 in, share of daylight that is sunny 91%, average daily high 27.7 °C / 82 °F, days with heavy rain 0.6 days, wet days 9.3 days, relative humidity 74%.
Against: feels like (high) 32.1 °C / 90 °F, average daily low 25.8 °C / 78 °F.
December · good
In its favour: precipitation 45 mm / 1.8 in, share of daylight that is sunny 90%, days with heavy rain 0.8 days, average daily high 28.4 °C / 83 °F, wet days 8.6 days, relative humidity 73%.
Against: feels like (high) 32.6 °C / 91 °F, average daily low 26.2 °C / 79 °F.
Beach and swimming
Hot, dry and sunny. Penalises the monsoon hard.
- JJanuary: best
- FFebruary: best
- MMarch: good
- AApril: neither
- MMay: neither
- JJune: neither
- JJuly: neither
- AAugust: neither
- SSeptember: neither
- OOctober: neither
- NNovember: good
- DDecember: best
- Best
- December–February
- Good
- March, November
Why these months
January · best
In its favour: average daily high 27.7 °C / 82 °F, precipitation 37 mm / 1.5 in, share of daylight that is sunny 91%, feels like (high) 32.1 °C / 90 °F, days with heavy rain 0.6 days, average daily low 25.8 °C / 78 °F, wind (daily max) 19 km/h / 12 mph.
Against: wet days 9.3 days.
February · best
In its favour: average daily high 27.7 °C / 82 °F, precipitation 37 mm / 1.5 in, share of daylight that is sunny 92%, feels like (high) 32.7 °C / 91 °F, days with heavy rain 0.4 days, average daily low 26 °C / 79 °F, wind (daily max) 19 km/h / 12 mph.
Against: wet days 9.8 days.
March · good
In its favour: average daily high 28.3 °C / 83 °F, share of daylight that is sunny 93%, precipitation 74 mm / 2.9 in, feels like (high) 34.1 °C / 93 °F, days with heavy rain 1.3 days, wind (daily max) 18 km/h / 11 mph, average daily low 26.5 °C / 80 °F.
Against: wet days 15.8 days.
November · good
In its favour: average daily high 28.6 °C / 83 °F, share of daylight that is sunny 86%, feels like (high) 33.5 °C / 92 °F, days with heavy rain 2.7 days, wind (daily max) 17 km/h / 11 mph, average daily low 26.6 °C / 80 °F.
Against: wet days 16.4 days, precipitation 107 mm / 4.2 in.
December · best
In its favour: average daily high 28.4 °C / 83 °F, precipitation 45 mm / 1.8 in, share of daylight that is sunny 90%, feels like (high) 32.6 °C / 91 °F, days with heavy rain 0.8 days, wet days 8.6 days, wind (daily max) 19 km/h / 12 mph, average daily low 26.2 °C / 79 °F.
Hiking and trekking
Cool enough to climb in, dry enough to enjoy, long enough days.
- JJanuary: neither
- FFebruary: neither
- MMarch: neither
- AApril: neither
- MMay: neither
- JJune: neither
- JJuly: neither
- AAugust: neither
- SSeptember: neither
- OOctober: neither
- NNovember: neither
- DDecember: neither
No month is good for this in Koh Rong.
An activity is listed only where it applies: skiing at ski destinations, beach and swimming at beach destinations. The nearest ski area is Jade Dragon Mountain, 1852 km away.
Weather averages
Monthly averages over twenty years, 2006–2025. Highs, lows and precipitation are in the chart at the top.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Feels like (high) | 32.1 °C | 32.7 °C | 34.1 °C | 35.4 °C | 34.8 °C | 33.3 °C | 32.3 °C | 32.2 °C | 32.1 °C | 33.3 °C | 33.5 °C | 32.6 °C |
| Days with heavy rain | 0.6 days | 0.4 days | 1.3 days | 2.8 days | 13.2 days | 16.6 days | 18.6 days | 18 days | 17.9 days | 11.3 days | 2.7 days | 0.8 days |
| Time rain usually falls | 7 am | 5 am | 6 am | 5 am | 6 am | 6 am | 6 am | 7 am | 5 am | 3 am | 2 am | 1 am |
| Sunshine per day | 10.6 h | 10.9 h | 11.2 h | 11.2 h | 9.6 h | 8.9 h | 8.4 h | 9 h | 7.9 h | 8.8 h | 10 h | 10.4 h |
| Relative humidity | 74% | 77% | 79% | 80% | 83% | 84% | 85% | 85% | 85% | 83% | 77% | 73% |
Sea temperature
Averaged over a shorter period (2022–2025) than the twenty-year averages above.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature 2022–2025 | 29 °C | 29.3 °C | 29.9 °C | 31 °C | 31.4 °C | 30.1 °C | 29.6 °C | 29.8 °C | 29.4 °C | 30 °C | 30 °C | 29.3 °C |
| Sea temperature (daily max) 2022–2025 | 29.1 °C | 29.5 °C | 30.1 °C | 31.3 °C | 31.7 °C | 30.3 °C | 29.7 °C | 30 °C | 29.6 °C | 30.3 °C | 30.1 °C | 29.5 °C |
- Very cold 10 °C or less
- Cold 10 to 15 °C
- Cool 15 to 20 °C
- Comfortable 20 to 25 °C
- Warm 25 to 28 °C
- Very warm over 28 °C
The words describe how the water feels to swim in. They are ours, not an official standard.
Air quality
Averaged over a shorter period (2022–2025) than the twenty-year averages above, and not counted towards good or best months.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Air pollution (PM2.5) 2022–2025 | 16.1 µg/m³ | 17.1 µg/m³ | 16.6 µg/m³ | 13.2 µg/m³ | 8.5 µg/m³ | 8.6 µg/m³ | 9.4 µg/m³ | 7.6 µg/m³ | 7.5 µg/m³ | 6.9 µg/m³ | 7.5 µg/m³ | 8.6 µg/m³ |
| Air pollution (PM2.5, daily peak) 2022–2025 | 22.8 µg/m³ | 22.5 µg/m³ | 22.1 µg/m³ | 18.1 µg/m³ | 11.4 µg/m³ | 10.8 µg/m³ | 12 µg/m³ | 9.7 µg/m³ | 9.5 µg/m³ | 10 µg/m³ | 10.9 µg/m³ | 13.5 µg/m³ |
- Good 15 µg/m³ or less
- Fair 15 to 25 µg/m³
- Moderate 25 to 37.5 µg/m³
- Poor 37.5 to 50 µg/m³
- Very poor 50 to 75 µg/m³
- Extremely poor over 75 µg/m³
Each figure is compared with the World Health Organization's guideline for a day's air, 15 µg/m³ or less, and with its interim targets above that. The words are ours: the WHO does not name its steps. The figures are modelled monthly averages, so single days can be well above them. The daily peak is the average of each day's highest hour, shaded on the same scale.