Petra records about 180mm of rain across roughly 35 wet days a year, which is a 10% chance on an average day. December is the wettest month at 35mm (19% of the annual total) and June the driest at 0mm. Local rain type: brief showers. Petra is extremely dry — rain is rare and mostly limited to winter months. However, when it does rain, flash floods in the narrow Siq canyon are a serious danger. Never enter the Siq during heavy rainfall.
Chance of rain on an average day: 10%
Rainfall climatology for Petra. 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 | 180mm |
| Rain days per year | 35 |
| Odds on an average day | 10% |
| Wettest month | December — 35mm over 7 days |
| Driest month | June — 0mm over 0 days |
| Rain type | brief showers |
| Best dry window | April through October is virtually rain-free with clear skies and warm temperatures. |
| Worst rain window | December and January bring the most rain, though even then, precipitation is minimal. Flash flood risk is the real danger. |
December delivers 3500% more rain than June (35mm vs 0mm). That gap is the difference between planning around showers and ignoring them.
No single month holds more than 19% of the annual total, so rain in Petra is spread through the year — there is no season you can rely on being dry.
Petra rain typically comes as discrete showers, so a compact umbrella and a flexible plan are usually enough.
Rain falls on about 7 days in December against 0 in June — 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 | 6 | 20% | 14°C |
| February | 25mm | 5 | 17% | 14°C |
| March | 25mm | 5 | 17% | 17°C |
| April | 15mm | 3 | 10% | 22°C |
| May | 5mm | 1 | 3% | 28°C |
| June | 0mm | 0 | 0% | 33°C |
| July | 0mm | 0 | 0% | 36°C |
| August | 0mm | 0 | 0% | 36°C |
| September | 0mm | 0 | 0% | 33°C |
| October | 10mm | 2 | 7% | 28°C |
| November | 25mm | 5 | 17% | 22°C |
| December | 35mm | 7 | 23% | 17°C |
Rain probability is the chance that at least 0.2mm falls at your location — not how long it rains. For Petra 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.
Petra records rain on roughly 35 days a year — about a 10% chance on any given day — totalling around 180mm.
December, with about 35mm over 7 rain days. That is 19% of the entire year's rainfall in a single month.
June is the driest month at 0mm across roughly 0 days. April through October is virtually rain-free with clear skies and warm temperatures.
Petra is extremely dry — rain is rare and mostly limited to winter months. However, when it does rain, flash floods in the narrow Siq canyon are a serious danger. Never enter the Siq during heavy rainfall.
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.