Saudi Arabia has a hot desert climate, with summer temperatures soaring above 45°C (113°F) across most of the country and reaching up to 54°C (129°F) in the Rub al Khali, while comfortable winter days of 15–25°C make November to February the best time to visit. The kingdom is the largest country on Earth without a single permanent river, and aridity defines nearly every corner of it — yet the climate is far less uniform than the "endless sand" stereotype suggests.
What kind of climate does Saudi Arabia have?
Saudi Arabia falls almost entirely under the Köppen hot desert classification (BWh), with pockets of cold desert (BWk) in the northern interior and semi-arid steppe (BSh) along the southwestern highlands. The average annual temperature is around 25°C (77°F), and the national average rainfall is just 59 mm a year — lower than almost any other major desert nation. Three broad zones shape daily weather:
- The interior plateaus (Najd, including Riyadh): very hot, very dry, with large day-to-night temperature swings.
- The coasts (Red Sea and Persian Gulf): hot and oppressively humid, with milder winters.
- The Asir Mountains in the southwest: mild and surprisingly green, the only region to receive reliable rainfall.
This separation means that on a single July day, Jeddah may feel like a steam room, Riyadh like an oven, and Abha in the highlands like a cool spring afternoon.
Seasons and temperatures through the year
Saudi Arabia effectively has two seasons that matter — a long, punishing summer and a short, pleasant winter — with brief transitional spring and autumn windows.
- Winter (November–February): 8–25°C (46–77°F). The most comfortable season, with cool, sometimes cold nights inland.
- Spring (March–April): 20–35°C (68–95°F), warming quickly and prone to dust storms.
- Summer (May–September): 35–54°C (95–129°F), the most extreme heat on the planet.
- Asir Mountains (year-round): a steady 10–25°C (50–77°F).
Riyadh routinely exceeds 45°C from June through August, with bone-dry air and night temperatures that can still hang in the mid-30s. By contrast, winter nights in the northern desert and around Tabuk can drop below freezing, and rare snowfall has dusted the northwest — an astonishing sight in a country where summer highs top 50°C. The coasts trade the interior's dry heat for crushing humidity; on the Red Sea, the heat index can climb past 60°C in midsummer.
Rainfall, sandstorms and wadis
Rain is scarce, sudden and unevenly distributed. Most of the country sees fewer than 100 mm a year, and the Rub al Khali — the largest continuous sand desert on Earth — receives under 35 mm. When rain does fall, it often arrives as intense bursts, sending flash floods racing down normally dry wadis; these floods can be deadly and have repeatedly caused damage in cities such as Jeddah.
The Asir Mountains are the great exception. Catching moisture from the Indian Ocean monsoon between July and September, the highlands around Abha collect roughly 300–500 mm a year, supporting terraced farms and lush green slopes. Spring also brings the shamal — fierce northwesterly winds that whip up sandstorms capable of swallowing whole cities, slashing visibility to near zero and disrupting flights for days at a time. Dust events peak from March to May but can occur in any month.
When is the best time to visit Saudi Arabia?
For nearly all of the country, November to February is the only genuinely comfortable window, and it lines up neatly with the kingdom's growing tourist season. Daytime temperatures settle into the pleasant 15–25°C range, making sightseeing, hiking and outdoor dining enjoyable rather than punishing.
- Riyadh and central Saudi Arabia: November–February.
- Jeddah and the Red Sea coast: November–March.
- AlUla and the archaeological sites: October–March, when desert days are cool enough for exploration.
- Asir Mountains: rewarding year-round, with the monsoon months of June–September showing the highlands at their greenest.
Red Sea diving works in any season, since water temperatures rarely fall below 24°C. Summer travel to the major cities is possible but demands planning around indoor, air-conditioned attractions and avoiding midday sun. For more on the country's geography, regions and travel basics, see the saudi-arabia country guide.
Climate facts at a glance
- Record heat has reached 54°C (129°F) in the Rub al Khali, among the hottest readings on Earth.
- National rainfall averages just 59 mm per year.
- The Asir highlands rise to around 3,000 m and catch monsoon rains, creating green landscapes amid the desert.
- Northern desert nights can fall below 0°C even though summer highs exceed 50°C nearby.
Frequently Asked Questions
Does it ever snow in Saudi Arabia?
Yes, though rarely. The high northern desert around Tabuk and parts of the Asir Mountains occasionally see snow in winter when cold air meets the rare moisture, surprising residents in years such as 2020.
What is the hottest month in Saudi Arabia?
July and August are typically the hottest, with Riyadh and much of the interior regularly exceeding 45°C and the Empty Quarter approaching its record of 54°C.
Is Saudi Arabia humid or dry?
It depends on the region. The interior, including Riyadh, is extremely dry with low humidity, while the Red Sea and Persian Gulf coasts are very humid, making the heat feel far more intense.
Which part of Saudi Arabia is coolest?
The southwestern Asir Mountains are the coolest, holding a mild 10–25°C year-round thanks to their high elevation and summer monsoon moisture — a stark contrast to the surrounding deserts.