Bali records about 1700mm of rain across roughly 115 wet days a year, which is a 32% chance on an average day. January is the wettest month at 345mm (20% of the annual total) and August the driest at 25mm. Local rain type: thunderstorms. Essential from November through March. Dry season (April-October) is much drier but afternoon showers are still possible. A waterproof bag for electronics is wise year-round.
Chance of rain on an average day: 32%
Rainfall climatology for Bali. 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.
Last updated: · Live forecast data refreshes hourly.
| Annual rainfall | 1700mm |
| Rain days per year | 115 |
| Odds on an average day | 32% |
| Wettest month | January — 345mm over 23 days |
| Driest month | August — 25mm over 2 days |
| Rain type | thunderstorms |
| Best dry window | July and August offer the driest, most comfortable conditions for beach and outdoor activities. |
| Worst rain window | January and February bring heavy tropical rain — up to 345mm monthly. |
January delivers 1280% more rain than August (345mm vs 25mm). That gap is the difference between planning around showers and ignoring them.
20% of the year's rain falls in January alone, so Bali has a genuine wet season rather than evenly spread showers.
Bali rain arrives in short, heavy bursts — shelter and timing matter more than gear.
Rain falls on about 23 days in January against 2 in August — 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 | 345mm | 23 | 77% | 31°C |
| February | 274mm | 18 | 60% | 31°C |
| March | 234mm | 16 | 53% | 31°C |
| April | 88mm | 6 | 20% | 31°C |
| May | 93mm | 6 | 20% | 30°C |
| June | 53mm | 4 | 13% | 30°C |
| July | 55mm | 4 | 13% | 30°C |
| August | 25mm | 2 | 7% | 30°C |
| September | 47mm | 3 | 10% | 30°C |
| October | 63mm | 4 | 13% | 30°C |
| November | 179mm | 12 | 40% | 31°C |
| December | 276mm | 18 | 60% | 31°C |
Rain probability is the chance that at least 0.2mm falls at your location — not how long it rains. For Bali 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.
Bali records rain on roughly 115 days a year — about a 32% chance on any given day — totalling around 1700mm.
January, with about 345mm over 23 rain days. That is 20% of the entire year's rainfall in a single month.
August is the driest month at 25mm across roughly 2 days. July and August offer the driest, most comfortable conditions for beach and outdoor activities.
Essential from November through March. Dry season (April-October) is much drier but afternoon showers are still possible. A waterproof bag for electronics is wise year-round.
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.