January scores 74/100 for outdoor ceremonies: very low rain risk (1 wet days, 9mm), 32°C afternoons cooling to about 26°C for the reception, and 11.3 hours of daylight for the photography schedule. September is the month to avoid at 18/100.
January outdoor ceremony score: 74/100
Climate normals for Bangkok 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 | January — 74/100 |
| Second choice | December — 73/100 |
| Month to avoid | September — 18/100 |
| Rain risk in the best month | Very low — rain on about 1 days |
| Guest comfort | 58/100 at 32°C |
| Reception temperature | ≈ 26°C after sunset in January |
| Photo light | 8h of sun across a 11.3h day |
| Months scoring 65+ | 4 of 12 |
January keeps seated guests at 32°C in the afternoon and around 26°C after sunset — the closest Bangkok gets to a ceremony that needs neither shade structures nor patio heaters.
Rain falls on roughly 1 days in January (very low risk, 9mm). A simple marquee-on-standby is usually enough.
January gives 11.3 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 18/100 for weddings in Bangkok: 35°C highs, 344mm of rain and 29°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 | 74/100 | Very low (1 days) | 32°C | 26°C | 58/100 | 76/100 |
| February | 66/100 | Very low (3 days) | 32°C | 26°C | 58/100 | 69/100 |
| March | 66/100 | Very low (3 days) | 32°C | 26°C | 58/100 | 70/100 |
| April | 51/100 | Low (6 days) | 33°C | 27°C | 54/100 | 47/100 |
| May | 21/100 | High (19 days) | 34°C | 28°C | 44/100 | 0/100 |
| June | 23/100 | Moderate (13 days) | 35°C | 29°C | 45/100 | 18/100 |
| July | 22/100 | High (14 days) | 35°C | 29°C | 45/100 | 13/100 |
| August | 20/100 | High (17 days) | 35°C | 29°C | 42/100 | 3/100 |
| September | 18/100 | High (30 days) | 35°C | 29°C | 39/100 | 0/100 |
| October | 20/100 | High (21 days) | 34°C | 28°C | 42/100 | 0/100 |
| November | 59/100 | Low (4 days) | 33°C | 27°C | 54/100 | 52/100 |
| December | 73/100 | Very low (1 days) | 32°C | 26°C | 58/100 | 75/100 |
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 Bangkok 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 Bangkok linked below.
January, at 74/100. It combines very low rain risk with 32°C afternoons and roughly 26°C evenings, which is the most forgiving combination Bangkok offers for seated guests.
September scores 18/100: 35°C highs, 344mm of rain over about 30 days and 29°C evenings make a fully outdoor plan fragile.
In January rain falls on roughly 1 of 30 days, so the single-day probability is about 3%. In September that rises to about 100%.
A marquee on standby is usually enough in January, where rain risk is very low. Outside the 4 months scoring 65 or higher, book real covered space.
January gives 11.3 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.