The UAE has a subtropical hot desert climate, classed as BWh, and its weather is far simpler to plan around than a tropical country with monsoons. There are really only two seasons that matter: a warm, dry, sunny winter from November to March, and a very hot summer from May to September, with April and October acting as transitions between the two. Rainfall is rare, sunshine is close to guaranteed, and the single biggest variable in your trip is not whether it will rain but how hot it will be.
For most visitors that translates into a straightforward rule. If you want comfortable temperatures for sightseeing, hiking, desert trips and long days outdoors, come in winter. If you come in summer, expect to structure your days around air conditioning, indoor attractions and early mornings or evenings outside. The heat is the defining feature of the UAE’s climate, and understanding it is the key to enjoying a trip in any month.
The primary search that brings people here is Dubai weather, and Dubai is a fair proxy for the coastal cities. Just remember that inland desert areas such as Al Ain run hotter by day and cooler at night, while the east coast and the mountains have their own smaller variations.
The two seasons
The winter season, from roughly November to March, is when the UAE is at its best. Daytime highs settle at a comfortable 24 to 30C, skies are usually clear, and humidity is low. Nights turn noticeably cooler, especially away from the coast: in the open desert around Al Ain and Liwa, temperatures can fall to 10 to 15C after dark, and on the coldest January nights the desert can feel genuinely chilly. This is the season for the beach by day and a light jacket in the evening, and it is why December and January are the peak tourist months.
The summer season, from roughly May to September, is long and severe. Daytime highs in Dubai and Abu Dhabi sit around 40 to 45C, and inland the mercury can climb past 48C on the worst days. Crucially, the nights offer little relief, often staying above 30C. On the coast, the defining discomfort is not just the heat but the humidity, which builds through the summer and peaks in August and September, when the combination of warm air and high moisture can make stepping outside feel like walking into a warm, wet towel.
April and October are the transition months. They are warm, sometimes hot, but generally free of the summer’s worst extremes and humidity. Many visitors find these shoulder weeks a good compromise: fewer crowds than mid-winter, warmer sea, and temperatures that are demanding but manageable.
Temperature month by month
The table below uses Dubai as the benchmark for the coastal cities, since it is the most searched and broadly representative of the populated coast. Inland desert areas such as Al Ain run a few degrees hotter by day and cooler at night, while the mountains are cooler still.
| Month | Avg high | Avg low | Sea temp | Rain | Comfort |
|---|---|---|---|---|---|
| January | 24C | 14C | 22C | Low | Excellent, cool nights |
| February | 25C | 15C | 22C | Low | Excellent |
| March | 28C | 17C | 23C | Low | Very good, warming up |
| April | 33C | 20C | 25C | Very low | Warm, still pleasant |
| May | 38C | 25C | 28C | None | Hot |
| June | 40C | 28C | 30C | None | Very hot |
| July | 41C | 30C | 32C | None | Extreme heat |
| August | 42C | 30C | 33C | None | Extreme, most humid |
| September | 40C | 28C | 32C | None | Very hot, humid |
| October | 35C | 24C | 30C | Very low | Hot, easing |
| November | 30C | 20C | 28C | Low | Very good |
| December | 26C | 16C | 24C | Low | Excellent |
Read the table as a curve rather than a set of fixed points. Temperatures rise steadily from a January low, plateau at their brutal peak in July and August, then fall away through October into the comfortable winter. The sea lags the air by a few weeks, which is why it stays warm well into autumn and is at its coolest, and most refreshing, in the depths of winter.
Rainfall and the April 2024 event
Rain is a minor feature of the UAE’s weather. Annual totals average only around 100mm, and almost all of it falls between December and March. When it does rain it tends to arrive as short, sharp bursts rather than steady drizzle, and a heavy shower can briefly overwhelm drainage in the cities before the sun returns. Summers are effectively rainless.
The exception that everyone remembers is April 2024, when an unusually intense storm system delivered the heaviest rainfall on record, with some areas receiving more than a year’s worth of rain in a single day. Roads and parts of Dubai airport flooded, and the event drew global attention. It was a genuine outlier, not a sign of how a normal UAE spring behaves, and it should not shape expectations for a typical trip. In an average year you can plan an itinerary with almost no thought for rain.
Wind, dust and winter fog
Two other features shape day-to-day conditions. The Shamal is a northwesterly wind that sweeps down the Gulf, most common in winter and early summer. A strong Shamal can lift dust and sand into the air, dropping visibility and leaving a pale haze over the skyline that can last a day or two before it settles. Full sandstorms happen but are occasional rather than a regular event.
On calm winter mornings, particularly inland, the UAE can also wake to patches of fog. It forms overnight when moist air meets cooler ground, can be thick enough to affect driving and flights, and usually burns off within a few hours of sunrise. If you are self-driving between the emirates in winter, allow for the possibility of a slow, foggy start. Our getting around guide covers driving conditions in more detail.
Microclimates across the emirates
The UAE is small, but its weather is not uniform. The east coast, facing the Gulf of Oman around Fujairah, sits on the far side of the Hajar Mountains and feels subtly different from the Gulf coast: the sea is a touch cooler and clearer, and the mountains can wring a little more rain out of passing systems. It is a favourite escape for a change of scene and better diving water.
The mountains are the biggest departure from the desert norm. Ras Al Khaimah rises to Jebel Jais, the highest point in the country at 1,934m, and altitude does what it does everywhere: temperatures drop by several degrees. Summer evenings up on the mountain can be pleasant when the coast below is stifling, and winter nights at the top can approach freezing. It is the one place in the UAE where you might genuinely want a warm layer in summer.
The inland desert, around Al Ain and the Liwa oasis, shows the classic continental pattern of hot days and cold nights. Without the moderating sea, daytime summer heat is more extreme, but winter nights are the coolest in the country and the humidity is far lower than on the coast, which many find more comfortable despite the higher daytime peaks.
Planning around the weather
The practical takeaway is simple. For comfortable sightseeing, desert trips, hiking and long days outdoors, aim for November to March, accepting that this is also the busiest and priciest season. April and October offer a warmer sea and thinner crowds in exchange for hotter days. A summer trip is entirely workable if you lean into indoor attractions, early starts and the country’s excellent air conditioning, and it comes with lower hotel rates as compensation for the heat.
Whatever your dates, rain will rarely trouble you and sunshine is close to certain. The only real decision is how much heat you are willing to trade for lower prices and quieter attractions.
For a fuller month-by-month verdict with festivals and events, see our best time to visit the UAE guide. To match the weather to a city, our Dubai and Ras Al Khaimah pages cover what each does best by season, and the getting around guide will help you plan travel between them.