Siem Reap, Cambodia
tropical climate · culture · medium crowds · budget prices
Siem Reap sits at a tropical latitude in Cambodia, and the 2015–2024 weather record gives its sunshine a clear shape: the January peak reaches a 96/100 sun score, with daytime highs around 31°C — a solid base for a slow cultural trip.
April is the heat peak, averaging 34°C highs; December is the cool end, when nights dip to around 22°C. Rain is most likely in September, when about 92% of days see meaningful rainfall, and least likely in January (7%). Beach-warm afternoons (24°C and up) hold through January–December.
Averaged by season, sun scores land at 72 for spring, 71 for summer, 78 for autumn and 92 for winter — with typical afternoons of 34°, 32°, 31° and 31°C respectively. In short: plan around winter if you can, keep autumn as the fallback, and go into summer with managed expectations (its season score is 71). If your dates are flexible, January buys you 31°C warmth at the quiet end of the season.
Best months to visit Siem Reap
Our month-by-month scoring puts January first (96/100), with December (94) and November (88) close behind. In practice you have flexibility — January–April, June–August and October–December all stay above a 70 sun score. Skip September if sunshine is the point — it bottoms out at 69/100.
Put against its 126 tropical peers in January, it lands in the sunnier half of the group, ahead of 96% of them.
Month-by-month breakdown for Siem Reap → · More destinations for January →
Right now the 16-day outlook shows 2 mostly-clear days (under 40% cloud) and 7 with real rain risk, with temperatures between 23°C and 32°C — which is how Siem Reap earns its current 84/100 sun score.
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Flights from Europe
Nearest airport with flights: Siem Reap-Angkor International Airport (SAI), 39 km
| From | Distance | Estimated non-stop time | |
|---|---|---|---|
| Brussels (BRU) | 9,512 km | ~12 h 30 | Find flights → |
| Amsterdam (AMS) | 9,430 km | ~12 h 15 | Find flights → |
| London (LON) | 9,788 km | ~12 h 45 | Find flights → |
| Paris (PAR) | 9,712 km | ~12 h 45 | Find flights → |
| Frankfurt (FRA) | 9,235 km | ~12 h | Find flights → |
Estimates from distance; actual schedules may require a connection.
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Next 16 days
Live forecast, refreshed twice daily. Forecasts updated 29 Oct, 06:35 CET.
| Date | High / low | Cloud | Rain odds |
|---|---|---|---|
| Thu 29 Oct | 31° / 25° | 92% | 52% |
| Fri 30 Oct | 32° / 24° | 88% | 49% |
| Sat 31 Oct | 32° / 24° | 64% | 34% |
| Sun 1 Nov | 31° / 24° | 57% | 32% |
| Mon 2 Nov | 32° / 24° | 71% | 36% |
| Tue 3 Nov | 32° / 24° | 62% | 49% |
| Wed 4 Nov | 31° / 24° | 73% | 64% |
| Thu 5 Nov | 30° / 24° | 95% | 65% |
| Fri 6 Nov | 32° / 24° | 80% | 53% |
| Sat 7 Nov | 32° / 23° | 51% | 43% |
| Sun 8 Nov | 32° / 23° | 35% | 35% |
| Mon 9 Nov | 32° / 23° | 72% | 30% |
| Tue 10 Nov | 31° / 23° | 28% | 32% |
| Wed 11 Nov | 32° / 23° | 40% | 32% |
| Thu 12 Nov | 32° / 24° | 48% | 30% |
| Fri 13 Nov | 32° / 23° | 81% | 27% |
Siem Reap climate, month by month
2015–2024 averages (January highlighted as the best month).
| Month | Day / night °C | Cloud | Rain-day odds | Sun score |
|---|---|---|---|---|
| January | 31° / 21.7° | 53.9% | 7.4% | 96 |
| February | 32.4° / 22.6° | 41.4% | 14.1% | 87 |
| March | 33.7° / 24.8° | 49.5% | 33.5% | 76 |
| April | 34.1° / 25.8° | 61.6% | 47% | 72 |
| May | 33° / 26° | 84.4% | 77.4% | 69 |
| June | 32.4° / 25.9° | 88.4% | 75.3% | 73 |
| July | 31.8° / 25.5° | 89.8% | 82.9% | 70 |
| August | 31.8° / 25.3° | 90.2% | 82.6% | 71 |
| September | 30.7° / 24.5° | 91.4% | 91.7% | 69 |
| October | 30.5° / 23.7° | 82.8% | 73.3% | 76 |
| November | 30.5° / 22.9° | 70.2% | 41.7% | 88 |
| December | 30° / 21.5° | 60.5% | 15.3% | 94 |
Similar sunny destinations
tropical escapes with a sun score within ±10 of Siem Reap right now.