Jordan has a hot, dry climate characterized by long, hot, dry summers and short, cool winters. The climate is influenced by Jordan’s location between the subtropical aridity of the Arabian desert areas and the subtropical humidity of the eastern Mediterranean area. January is the coldest month, with temperatures from 5°C to 10°C, and August is the hottest month at 20°C to 35°C. Daily temperatures can be very hot, especially in the summer; on some days it can be 40°C or more, especially when the Shirocco, a hot, dry south rly wind blows. These winds can sometimes be very strong and can cause Sandstorms.
About 70 percent of the average rainfall in the country falls between November and March; June through August are often rain less. Rainfall varies from season to season and from year to year. Precipitation is often concentrated in violent storms, causing erosion and local flooding, especially in the winter months.
Required clothing: Lightweight cotton clothes are advised in the summer, with a sweater for cooler evenings, especially in the inland areas. waterproof medium wear is recommended for the winter
The Hashemite Kingodm has many different climates, but the most prevalent ones are Csa (Hot-summer Mediterranean climate), BSk (Cold semi-arid climates) like below:
Amman, Irbid, Madaba, Karak, Khirbat Assaf
Al Taiyibe, Amaun, Wadi Musa, Al Bayḑā, Mukawir
Ajaj, Khirbat al Shaykh Muhammad, Al Jirm, Khirbat al Hamma, Khirbat al Ruqqa
Aqaba, Housing Port, Tel Caliph, Rum, Al Kafrayn
Um Sayhun, Qriet Naiefe, Rehbit Rakad, Al-butstaneh, Al-salhieh
Dana, Al Arja, Baqa’a, Al Junaynah, Ash Shammakh
Jordan is a year-round destination – but despite its small size, you’ll find wide variations in climate, often reliant on the topography: Amman, Petra and Wadi Rum all lie well over 800m above sea level, Dana and Ajloun are even higher (up to 1500m), whereas the Dead Sea lies 400m below sea level. The same January day could have you throwing snowballs in Ajloun or topping up your tan on the Red Sea beaches.
The best time to visit is spring (March–May), when temperatures are toasty but not scorching, wildflowers are out everywhere (even the desert is carpeted), and the hills and valleys running down the centre of the country are lush and gorgeously colorful. The worst of the rain is over by March, though it doesn’t entirely peter out in Amman and the hills until late April. Humidity is pleasant everywhere, and low, clear sunlight draws a spectacular kaleidoscope of color and texture from the desert rocks. There’s only one drawback – a desert wind, loaded with dust and grit, which blows regularly each spring or early summer out of the Arabian interior. It’s known across the Middle East as the khamseen (“fifty”), after the fifty days it traditionally persists (although in Jordan it rarely lasts longer than a few days), and can darken the sky and raise the temperature by 10°C, coating everyone and everything in a layer of sand.
Typical autumn weather (mid-Sept to mid-Nov) mostly passes Jordan by, with only a few weeks marking the shift out of high summer – if you catch it, this can be a lovely time to visit. The first rains fall in early or mid-October, making the parched countryside bloom again and temperatures drop to more manageable levels.
“Touristicly”: autumn in Jordan is another “high season”. Summer heat goes away followed by pleasant warmth. In addition at second half of September water of seas cools a bit. By the end of the season it reaches mark of 25 °C (77 °F). And such temperature is great because of its cooling effect.
At November in cities and towns of central portion of the country temperature of air is about 20 °C (68 °F) and occasional drizzle. However coasts of the Dead Sea are much warmer and drier with their 27 °C (81 °F). Daily range of temperatures is still pretty wide: from 7 °C in northern regions to 15 °C in southern lands.
In summer (roughly June–Sept), Amman can sizzle – up to 40°C in the city center – though it’s a dry heat, rarely uncomfortable, and the hills catch some cooler breezes.
Temperatures at the Dead Sea and Aqaba, though, have been known to top 45°C, with Aqaba in particular suffering from an intolerable hot wind that makes you feel like you’re basting in a fan-assisted oven.
High, hazy light flattens the brown landscape and bleaches any beauty out of the desert. Copy the locals, and treat the hours between noon and 3pm as a time to snooze in the cool indoors.
In winter (roughly Dec–Feb), Amman can be desperately chilly, with biting winds sweeping through the valleys, rain showers and even snowfall, although the sun is still never far away. With short days and freezing nights, Petra winters can be taxing; exceptional lows of -8°C have been recorded. Rum is more temperate, but Aqaba makes a fine retreat, with sunshine and warmth even in the depths of January (average Red Sea and Dead Sea water temperatures vary little either side of a balmy 24°C all year).
January is the coldest month of a year yet at February weather begin transformation into its pleasant warm state.