February scores 85/100 for outdoor ceremonies: very low rain risk (1 wet days, 5mm), 29°C afternoons cooling to about 19°C for the reception, and 11.4 hours of daylight for the photography schedule. August is the month to avoid at 22/100.
February outdoor ceremony score: 85/100
Climate normals for Chiang Mai 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 — 85/100 |
| Second choice | March — 82/100 |
| Month to avoid | August — 22/100 |
| Rain risk in the best month | Very low — rain on about 1 days |
| Guest comfort | 71/100 at 29°C |
| Reception temperature | ≈ 19°C after sunset in February |
| Photo light | 8h of sun across a 11.4h day |
| Months scoring 65+ | 6 of 12 |
February keeps seated guests at 29°C in the afternoon and around 19°C after sunset — the closest Chiang Mai gets to a ceremony that needs neither shade structures nor patio heaters.
Rain falls on roughly 1 days in February (very low risk, 5mm). A simple marquee-on-standby is usually enough.
February gives 11.4 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.
August scores 22/100 for weddings in Chiang Mai: 36°C highs, 225mm 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 | 81/100 | Very low (1 days) | 29°C | 19°C | 71/100 | 54/100 |
| February | 85/100 | Very low (1 days) | 29°C | 19°C | 71/100 | 76/100 |
| March | 82/100 | Very low (1 days) | 30°C | 20°C | 66/100 | 77/100 |
| April | 69/100 | Low (4 days) | 32°C | 22°C | 58/100 | 75/100 |
| May | 34/100 | Moderate (12 days) | 33°C | 24°C | 54/100 | 28/100 |
| June | 35/100 | Moderate (10 days) | 35°C | 26°C | 45/100 | 28/100 |
| July | 26/100 | Moderate (12 days) | 36°C | 27°C | 41/100 | 21/100 |
| August | 22/100 | High (17 days) | 36°C | 27°C | 41/100 | 3/100 |
| September | 24/100 | High (17 days) | 35°C | 26°C | 45/100 | 2/100 |
| October | 42/100 | Moderate (9 days) | 33°C | 24°C | 54/100 | 21/100 |
| November | 68/100 | Very low (3 days) | 32°C | 22°C | 58/100 | 54/100 |
| December | 82/100 | Very low (1 days) | 30°C | 20°C | 66/100 | 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 Chiang Mai 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 Chiang Mai linked below.
February, at 85/100. It combines very low rain risk with 29°C afternoons and roughly 19°C evenings, which is the most forgiving combination Chiang Mai offers for seated guests.
August scores 22/100: 36°C highs, 225mm of rain over about 17 days and 27°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 August that rises to about 57%.
A marquee on standby is usually enough in February, where rain risk is very low. Outside the 6 months scoring 65 or higher, book real covered space.
February gives 11.4 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.