March scores 85/100 for outdoor ceremonies: very low rain risk (1 wet days, 15mm), 26°C afternoons cooling to about 22°C for the reception, and 11.9 hours of daylight for the photography schedule. September is the month to avoid at 26/100.
March outdoor ceremony score: 85/100
Climate normals for Hoi An 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 | March — 85/100 |
| Second choice | February — 84/100 |
| Month to avoid | September — 26/100 |
| Rain risk in the best month | Very low — rain on about 1 days |
| Guest comfort | 83/100 at 26°C |
| Reception temperature | ≈ 22°C after sunset in March |
| Photo light | 8h of sun across a 11.9h day |
| Months scoring 65+ | 5 of 12 |
March keeps seated guests at 26°C in the afternoon and around 22°C after sunset — the closest Hoi An gets to a ceremony that needs neither shade structures nor patio heaters.
Rain falls on roughly 1 days in March (very low risk, 15mm). A simple marquee-on-standby is usually enough.
March gives 11.9 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 26/100 for weddings in Hoi An: 33°C highs, 280mm of rain and 27°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 | 76/100 | Very low (3 days) | 25°C | 21°C | 87/100 | 47/100 |
| February | 84/100 | Very low (1 days) | 25°C | 21°C | 87/100 | 55/100 |
| March | 85/100 | Very low (1 days) | 26°C | 22°C | 83/100 | 77/100 |
| April | 79/100 | Very low (2 days) | 28°C | 23°C | 75/100 | 81/100 |
| May | 68/100 | Low (4 days) | 31°C | 25°C | 62/100 | 83/100 |
| June | 60/100 | Low (5 days) | 33°C | 27°C | 54/100 | 86/100 |
| July | 58/100 | Low (5 days) | 34°C | 28°C | 50/100 | 86/100 |
| August | 47/100 | Low (7 days) | 34°C | 28°C | 50/100 | 51/100 |
| September | 26/100 | High (18 days) | 33°C | 27°C | 50/100 | 13/100 |
| October | 27/100 | High (30 days) | 31°C | 25°C | 55/100 | 0/100 |
| November | 32/100 | High (27 days) | 28°C | 23°C | 66/100 | 0/100 |
| December | 37/100 | High (20 days) | 26°C | 22°C | 78/100 | 0/100 |
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 Hoi An 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 Hoi An linked below.
March, at 85/100. It combines very low rain risk with 26°C afternoons and roughly 22°C evenings, which is the most forgiving combination Hoi An offers for seated guests.
September scores 26/100: 33°C highs, 280mm of rain over about 18 days and 27°C evenings make a fully outdoor plan fragile.
In March 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 March, where rain risk is very low. Outside the 5 months scoring 65 or higher, book real covered space.
March gives 11.9 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.