Bora Bora records about 1800mm of rain across roughly 140 wet days a year, which is a 38% chance on an average day. December is the wettest month at 280mm (16% of the annual total) and July the driest at 50mm. Local rain type: brief showers. Bora Bora's dry season (May-October) sees little rain and is ideal for lagoon activities. Wet season rain comes in warm, intense bursts — you'll dry off in minutes in the tropical heat.
Chance of rain on an average day: 38%
Rainfall climatology for Bora Bora. The live hour-by-hour answer for today loads at the top of this page from Open-Meteo and refreshes through the day — the figures below describe a typical year, not today.
Conditions on this page are recalculated from the latest forecast every time it is opened, for the current date in the location's own time zone. Showing .
| Annual rainfall | 1800mm |
| Rain days per year | 140 |
| Odds on an average day | 38% |
| Wettest month | December — 280mm over 22 days |
| Driest month | July — 50mm over 4 days |
| Rain type | brief showers |
| Best dry window | July and August are the driest months with clear skies, calm lagoon water, and comfortable southeast trade winds. |
| Worst rain window | December through February brings the most rain, but rarely more than 2-3 hours at a time. |
December delivers 460% more rain than July (280mm vs 50mm). That gap is the difference between planning around showers and ignoring them.
No single month holds more than 16% of the annual total, so rain in Bora Bora is spread through the year — there is no season you can rely on being dry.
Bora Bora rain typically comes as discrete showers, so a compact umbrella and a flexible plan are usually enough.
Rain falls on about 22 days in December against 4 in July — the frequency swing matters more for planning than the millimetre totals.
Climate normals. Use them to judge whether today's live forecast at the top of the page is typical or unusual for the season.
| Month | Rainfall | Rain days | Chance on a given day | Highs |
|---|---|---|---|---|
| January | 260mm | 21 | 70% | 31°C |
| February | 230mm | 18 | 60% | 31°C |
| March | 200mm | 16 | 53% | 31°C |
| April | 160mm | 13 | 43% | 30°C |
| May | 100mm | 8 | 27% | 29°C |
| June | 60mm | 5 | 17% | 28°C |
| July | 50mm | 4 | 13% | 28°C |
| August | 50mm | 4 | 13% | 28°C |
| September | 70mm | 6 | 20% | 28°C |
| October | 120mm | 10 | 33% | 29°C |
| November | 180mm | 14 | 47% | 30°C |
| December | 280mm | 22 | 73% | 31°C |
Rain probability is the chance that at least 0.2mm falls at your location — not how long it rains. For Bora Bora we combine the hourly probability curve, expected volume in millimetres, and the city's own rainfall record into a single umbrella verdict.
| Factor | Weight | What it measures |
|---|---|---|
| Hourly probability | 40% | Peak and sustained chance of measurable rain across the next 24 hours. |
| Expected volume | 30% | Total millimetres, which separates a passing shower from a genuine soaking. |
| Timing & duration | 20% | When rain starts, when it eases, and the longest continuous dry window. |
| Local rain type | 10% | Drizzle, brief showers, thunderstorms or monsoon — each needs different gear. |
Live hourly values come from Open-Meteo and refresh through the day. Monthly rainfall figures are climate normals, so they describe a typical year rather than a forecast.
Bora Bora records rain on roughly 140 days a year — about a 38% chance on any given day — totalling around 1800mm.
December, with about 280mm over 22 rain days. That is 16% of the entire year's rainfall in a single month.
July is the driest month at 50mm across roughly 4 days. July and August are the driest months with clear skies, calm lagoon water, and comfortable southeast trade winds.
Bora Bora's dry season (May-October) sees little rain and is ideal for lagoon activities. Wet season rain comes in warm, intense bursts — you'll dry off in minutes in the tropical heat.
No. Probability is the chance that at least 0.2mm of rain falls at your location at some point in the period. Check the expected millimetres alongside it: 40% with 0.4mm is a passing shower, 40% with 12mm is a soaking.