Sihanoukville weather by month & the best time to visit
🇰🇭 Cambodia · beach resort · tropical monsoon climate
The best time to visit Sihanoukville is January — its sunniest month (Sunshine Score 87/100), with February and December close behind. Sihanoukville averages about 2,236 hours of sunshine a year. Daytime highs around 29°C / 84°F and roughly 27 mm of rain in January.
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- Sun hours / year
- 2,236
- Sunniest month
- January
- Peak score
- 87/100
- Rain / year
- 2,554 mm
- Midday UV at peak
- 11 (extreme)
- Sea at warmest
- 32°C / 90°F
- Population
- 73k
- Elevation
- Sea level
When is the best time to visit Sihanoukville?
For sunshine, the best time to visit Sihanoukville is January, then February and December. The dullest month is May (64/100, 248 mm of rain). The full month-by-month picture is in the table below.
How sunny is Sihanoukville?
Sihanoukville gets a moderate 2,236 hours of sunshine a year. January (87/100) is noticeably better than May (64). It ranks #4 of 5 destinations in Cambodia for annual sunshine, below the national median of 2,484 hours. Rain has a clear season: the wettest stretch, around August, carries about 49% of the annual 2,554 mm.
Sunshine Score by month
| Month | Score | Day high | Night low | Rain | UV | Sea |
|---|---|---|---|---|---|---|
| January | 87 | 29° / 84°F | 24° / 75°F | 27 mm | 9 | 29° / 84°F |
| February | 87 | 30° / 86°F | 25° / 77°F | 24 mm | 11 | 30° / 86°F |
| March | 79 | 31° / 88°F | 26° / 79°F | 72 mm | 11 | 30° / 86°F |
| April | 67 | 31° / 88°F | 27° / 81°F | 134 mm | 11 | 32° / 90°F |
| May | 64 | 30° / 86°F | 28° / 82°F | 248 mm | 10 | 32° / 90°F |
| June | 64 | 29° / 84°F | 27° / 81°F | 380 mm | 9 | 30° / 86°F |
| July | 64 | 29° / 84°F | 27° / 81°F | 444 mm | 8 | 30° / 86°F |
| August | 64 | 28° / 82°F | 27° / 81°F | 373 mm | 9 | 30° / 86°F |
| September | 64 | 28° / 82°F | 26° / 79°F | 426 mm | 9 | 29° / 84°F |
| October | 64 | 29° / 84°F | 26° / 79°F | 253 mm | 9 | 30° / 86°F |
| November | 69 | 29° / 84°F | 26° / 79°F | 125 mm | 9 | 31° / 88°F |
| December | 83 | 29° / 84°F | 25° / 77°F | 48 mm | 9 | 30° / 86°F |
Sea temperature in Sihanoukville by month
The sea off Sihanoukville is warmest in April at around 32°C / 90°F, and coolest in January at 29°C / 84°F. The water sits at a comfortable 21°C or warmer roughly all year round. Month-by-month sea-surface temperatures are in the Sea column of the table above.
See Sihanoukville on the interactive sunshine globe →
Nearby places for sunshine
- Phu Quoc Vietnam · 60 km · best in Feb · 2,237 h sun/yr
- Phnom Penh (Boeng Khyang) Cambodia · 166 km · best in Dec · 2,484 h sun/yr
- Phnom Penh (Pou Senchey) Cambodia · 171 km · best in Dec · 2,484 h sun/yr
- Can Tho Vietnam · 234 km · best in Jan · 2,364 h sun/yr
- Ho Chi Minh City Vietnam · 331 km · best in Jan · 2,456 h sun/yr
- Rayong Thailand · 370 km · best in Feb · 2,377 h sun/yr
Nearest destinations
- Ta Noun Cambodia · 58 km · 2,235 h sun/yr · best in Jan
- Rach Gia Vietnam · 178 km · 2,207 h sun/yr · best in Jan
- Cà Mau Vietnam · 229 km · 2,208 h sun/yr · best in Feb
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