In Kuwait, there's a subtropical desert climate, with mild winters and very hot summers. The sun usually shines all year round.
Rainfall, slightly higher than 100 millimeters (4 inches) per year, occurs mainly from November to April, in the form of rare showers, which can sometimes be so intense and concentrated as to cause flooding.
Winter, from December to February, is mild: the daily average temperature in January is 13.5 degrees Celsius (56 °F). Nights are cool, on average about 8/10 °C (46/50 °F), but sometimes, the temperature can drop to 0 °C (32 °F). Days are mild or pleasantly warm, around 19 °C (66 °F) in January and 21/22 °C (69/71 °F) in December and February, but the temperature can reach 27/30 °C (81/86 °F) when the wind blows from the south. In winter, the sun often shines, but some cloudy days also possible, maybe with some rain.
In spring, the prevailing weather is sunny; the temperature rises rapidly, and already in April, highs are around 33 °C (92 °F). The wind from the Arabian desert can raise the temperature and bring sandstorms: as early as in April, it can exceed 40 °C (104 °F), while in May, it can even exceed 45 °C (113 °F).
Summer in Kuwait is scorchingly hot and windy; the prevailing wind blows from the interior, and therefore the influence of the sea is minimal. From June to August, the temperature is normally around 45/46 °C (112/115 °F) during the day and around 29/30 °C (84/87 °F) at night. High-temperature records are around 52/53 °C (125/127 °F). Relative humidity is very low (it often falls below 10%), and in combination with the wind, it can cause dehydration. Fortunately, public buildings and hotels are equipped with air conditioning.
Since it normally receives the wind from the continent, the small island of Failaka is usually torrid (that is, hot and dry) as well, but it can sometimes be muggy, especially in September and October, in the days when the wind calms down a bit.
In autumn, the weather is still hot and sunny in October, while the temperature drops below 30 °C (86 °F) during the month of November.

Kuwait City

Here are the average temperatures in the capital, Kuwait City.
Kuwait City - Average temperatures
Min (°C)8101420252930302621149
Max (°C)192228334045464643372721
Min (°F)465057687784868679705748
Max (°F)66728291104113115115109998170

Here is the average precipitation in Kuwait City.
Kuwait City - Average precipitation

The sun in Kuwait shines all year round, sometimes, however, some cloud banks can move over the country even in summer. Here are the average sunshine hours per day.
Kuwait City - Sunshine


Sea temperature

The Persian Gulf, in the northern part where Kuwait is located, is a bit cold for swimming in winter, it becomes warm enough in May, while it's very warm in summer, exceeding 30 °C (86 °F) for a few months.
Kuwait - Sea temperature
Temp (°C)191718212629313231292622
Temp (°F)666364707984889088847972

Best Time

The best time to visit Kuwait runs from mid-November to mid-March. In winter, from December to February, it can sometimes get cold at night, and there can be some rain, but at least, you avoid the scorching heat. In early November and late March, it can sometimes get hot. However, the heat in Kuwait is almost always torrid, ie dry, so it is more bearable than in other countries of the Persian Gulf; it's important to drink a lot and to be protected from the sun.

What to pack

In winter: bring spring/autumn clothes, a T-shirt or shirt for warm days, a sweater and a warm jacket for the evening and cold days, a scarf for the wind, and possibly an umbrella.
In summer: bring lightweight, loose-fitting clothes, made of natural fabric (cotton or linen), a desert turban, a sweater and a scarf for air conditioned places.
It's better for women to avoid shorts and miniskirts outside tourist resorts.
When going to the reef, you can bring snorkeling equipment, including water shoes or rubber-soled shoes.

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