February scores 76/100 for outdoor ceremonies: very low rain risk (1 wet days, 7mm), 31°C afternoons cooling to about 25°C for the reception, and 11.6 hours of daylight for the photography schedule. September is the month to avoid at 21/100.
February outdoor ceremony score: 76/100
Climate normals for Siem Reap rescored on wedding-specific weighting. Once your date falls inside the 14-day window the live forecast on this page takes over.
Last updated: · Live forecast data refreshes hourly.
| Best wedding month | February — 76/100 |
| Second choice | January — 73/100 |
| Month to avoid | September — 21/100 |
| Rain risk in the best month | Very low — rain on about 1 days |
| Guest comfort | 62/100 at 31°C |
| Reception temperature | ≈ 25°C after sunset in February |
| Photo light | 8h of sun across a 11.6h day |
| Months scoring 65+ | 4 of 12 |
February keeps seated guests at 31°C in the afternoon and around 25°C after sunset — the closest Siem Reap gets to a ceremony that needs neither shade structures nor patio heaters.
Rain falls on roughly 1 days in February (very low risk, 7mm). A simple marquee-on-standby is usually enough.
February gives 11.6 hours of daylight and about 8 hours of direct sun per day, so a late-afternoon ceremony puts portraits inside golden hour rather than after it.
September scores 21/100 for weddings in Siem Reap: 34°C highs, 235mm of rain and 28°C evenings make a fully outdoor plan fragile.
Scored on rain risk, guest comfort, evening temperature and photographic light — deliberately different weighting from the travel score.
| Month | Wedding score | Rain risk | Afternoon | Evening | Guest comfort | Photo light |
|---|---|---|---|---|---|---|
| January | 73/100 | Very low (1 days) | 31°C | 25°C | 62/100 | 55/100 |
| February | 76/100 | Very low (1 days) | 31°C | 25°C | 62/100 | 76/100 |
| March | 69/100 | Very low (2 days) | 32°C | 26°C | 58/100 | 73/100 |
| April | 60/100 | Low (5 days) | 32°C | 26°C | 58/100 | 71/100 |
| May | 31/100 | Moderate (11 days) | 34°C | 28°C | 50/100 | 30/100 |
| June | 25/100 | Moderate (13 days) | 34°C | 28°C | 50/100 | 18/100 |
| July | 21/100 | High (15 days) | 35°C | 29°C | 44/100 | 10/100 |
| August | 21/100 | High (16 days) | 35°C | 29°C | 44/100 | 7/100 |
| September | 21/100 | High (18 days) | 34°C | 28°C | 45/100 | 0/100 |
| October | 22/100 | High (15 days) | 34°C | 28°C | 48/100 | 1/100 |
| November | 54/100 | Low (5 days) | 32°C | 26°C | 58/100 | 34/100 |
| December | 70/100 | Very low (1 days) | 32°C | 26°C | 58/100 | 54/100 |
Wedding weather is scored differently from travel weather: seated guests in formalwear tolerate a narrower band than sightseers, and the ceremony hour matters more than the daily average. Each month in Siem Reap is scored 0–100 on the weighting below.
| Factor | Weight | What it measures |
|---|---|---|
| Dry conditions | 38% | Share of days with measurable rain — the single factor most likely to force a backup plan. |
| Guest comfort | 27% | Distance from a 22°C daytime ideal, with an extra penalty for humid heat above 24°C. |
| Evening temperature | 20% | Modelled reception-hour temperature against an 18°C ideal for an outdoor evening. |
| Photo light | 15% | Sunshine hours and daylight length, which set the length and quality of the golden hour window. |
Based on long-run climate averages rather than a forecast. Plan the ceremony around the golden hour — see golden hour times for Siem Reap linked below.
February, at 76/100. It combines very low rain risk with 31°C afternoons and roughly 25°C evenings, which is the most forgiving combination Siem Reap offers for seated guests.
September scores 21/100: 34°C highs, 235mm of rain over about 18 days and 28°C evenings make a fully outdoor plan fragile.
In February rain falls on roughly 1 of 30 days, so the single-day probability is about 3%. In September that rises to about 60%.
A marquee on standby is usually enough in February, where rain risk is very low. Outside the 4 months scoring 65 or higher, book real covered space.
February gives 11.6 hours of daylight and about 8 hours of direct sun. Put portraits in the final 60–90 minutes of daylight so they land inside golden hour rather than after it.