Krabi records about 2600mm of rain across roughly 160 wet days a year, which is a 44% chance on an average day. September is the wettest month at 380mm (15% of the annual total) and February the driest at 25mm. Local rain type: monsoon. Krabi's monsoon (May-October) brings heavy daily rain and rough seas. Dry season (November-March) is the only time for reliable island hopping. No umbrella needed December-February.
Chance of rain on an average day: 44%
Rainfall climatology for Krabi. 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 | 2600mm |
| Rain days per year | 160 |
| Odds on an average day | 44% |
| Wettest month | September — 380mm over 25 days |
| Driest month | February — 25mm over 2 days |
| Rain type | monsoon |
| Best dry window | December through February is reliably dry with crystal-clear Andaman Sea visibility. |
| Worst rain window | September is the wettest month — ferry services to islands are reduced or suspended entirely. |
September delivers 1420% more rain than February (380mm vs 25mm). That gap is the difference between planning around showers and ignoring them.
No single month holds more than 15% of the annual total, so rain in Krabi is spread through the year — there is no season you can rely on being dry.
Krabi rain arrives in short, heavy bursts — shelter and timing matter more than gear.
Rain falls on about 25 days in September against 2 in February — 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 | 30mm | 2 | 7% | 32°C |
| February | 25mm | 2 | 7% | 32°C |
| March | 60mm | 4 | 13% | 32°C |
| April | 130mm | 9 | 30% | 32°C |
| May | 300mm | 20 | 67% | 33°C |
| June | 280mm | 19 | 63% | 33°C |
| July | 290mm | 19 | 63% | 33°C |
| August | 270mm | 18 | 60% | 33°C |
| September | 380mm | 25 | 83% | 33°C |
| October | 330mm | 22 | 73% | 33°C |
| November | 210mm | 14 | 47% | 32°C |
| December | 90mm | 6 | 20% | 32°C |
Rain probability is the chance that at least 0.2mm falls at your location — not how long it rains. For Krabi 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.
Krabi records rain on roughly 160 days a year — about a 44% chance on any given day — totalling around 2600mm.
September, with about 380mm over 25 rain days. That is 15% of the entire year's rainfall in a single month.
February is the driest month at 25mm across roughly 2 days. December through February is reliably dry with crystal-clear Andaman Sea visibility.
Krabi's monsoon (May-October) brings heavy daily rain and rough seas. Dry season (November-March) is the only time for reliable island hopping. No umbrella needed December-February.
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.