, hot even in winter, from December to February, and very hot in the rest of the year, with a daily average above 30 °C (86 °F) from April to October.
The city is located in the far south of Saudi Arabia, on the Red Sea coast, almost 17 degrees north latitude and 60 kilometers (37 miles) from the border with Yemen.
To the east, on the other hand, are the Fifa (or Faifa) mountains, which reach 1,428 metres (4,685 feet), and the
, which exceed 2,000 metres (6,500 feet), where rains and thunderstorms form almost every day in summer. Sometimes a bit of rain can even reach the coast, in fact, in Jizan, August is the rainiest month, although with only 30 millimeters (1.2 inches) on average. Sometimes, thunderstorms with lightning can occur, even without rain. In summer, the amount of sunshine decreases a bit as well.
, the cool air from the north, which can affect the central-northern part of the Red Sea, arrives here weakened or not at all. Typically, once every few years, the temperature drops to a minimum of 15/16 °C (59/61 °F) on the coolest nights, although in February 1993 it dropped to 12 °C (53.5 °F).
, the combination of heat and humidity from the sea makes the heat very uncomfortable, with the north-west wind loaded with humidity after traveling across the Red Sea from northern Egypt.
The hottest days occur when the winds blow from the interior, and in these cases the temperature can exceed 40 °C (104 °F), from April to October, but at least the humidity decreases. In April 2014, the temperature reached 43.6 °C (110.5 °F).
, being the least hot of the year, and with the sea warm enough to swim in even in this season.
. Here are the average temperatures.
January, the least warm month of the year, is generally a warm to hot, muggy month. The average temperature is of
26.3 °C, with a minimum of
22 °C and a maximum of
30.6 °C.

On the coldest nights of the month, the temperature usually drops to around
18.5 °C.

On the warmest days of the month, the temperature usually reaches around
32.5 °C.

Precipitation amounts to
13.2 mm, distributed over 3 days.
The day lasts on average 11 hours and 10 minutes.

There are on average 7.5 hours of sunshine per day. So, the sun shines 68% of the time.
The average humidity is 72%. Hence, the air is normally humid.
The average wind speed is of
11 kph.

The average sea temperature is of
26.6 °C. Therefore, the sea is pleasantly warm and allows long swims.
February is generally a warm to hot, muggy month. The average temperature is of
27 °C, with a minimum of
22.9 °C and a maximum of
31.2 °C.

On the coldest nights of the month, the temperature usually drops to around
19.5 °C.

On the warmest days of the month, the temperature usually reaches around
33 °C.

Precipitation amounts to only
3.2 mm, and all occurs in one day.
The day lasts on average 11 hours and 35 minutes.

There are on average 8 hours of sunshine per day. So, the sun shines 71% of the time.
The average humidity is 72%. Hence, the air is normally humid.
The average wind speed is of
11.1 kph.

The average sea temperature is of
26.2 °C. Therefore, the sea is warm enough for swimming.
March is generally a very hot month. The average temperature is of
28.6 °C, with a minimum of
24.4 °C and a maximum of
32.8 °C.

On the coldest nights of the month, the temperature usually drops to around
21 °C.

On the warmest days of the month, the temperature usually reaches around
35 °C.

Precipitation amounts to only
4.7 mm, and all occurs in one day.
The day lasts on average 12 hours and 5 minutes.

There are on average 9 hours of sunshine per day. So, the sun shines 74% of the time.
The average humidity is 69%.
The average wind speed is of
11.2 kph.

The average sea temperature is of
26.9 °C. Therefore, the sea is pleasantly warm and allows long swims.
April is generally a very hot month. The average temperature is of
30.9 °C, with a minimum of
26.6 °C and a maximum of
35.3 °C.

On the coldest nights of the month, the temperature usually drops to around
23.5 °C.

On the warmest days of the month, the temperature usually reaches around
38.5 °C.

Precipitation amounts to
11.1 mm, distributed over 2 days.
The day lasts on average 12 hours and 30 minutes.

There are on average 10 hours of sunshine per day. So, the sun shines 80% of the time.
The average humidity is 65%.
The average wind speed is of
11.2 kph.

The average sea temperature is of
28.5 °C. Therefore, the sea is pleasantly warm and allows long swims.
May is generally a scorchingly hot month. The average temperature is of
33 °C, with a minimum of
28.4 °C and a maximum of
37.6 °C.

On the coldest nights of the month, the temperature usually drops to around
25 °C.

On the warmest days of the month, the temperature usually reaches around
40.5 °C.

Precipitation amounts to only
9 mm, and all occurs in one day.
The day lasts on average 12 hours and 55 minutes.

There are on average 10.5 hours of sunshine per day. So, the sun shines 83% of the time.
The average humidity is 62%.
The average wind speed is of
11.4 kph.

The average sea temperature is of
30.3 °C. Therefore, the sea is pleasantly warm and allows long swims.
June is generally a scorchingly hot month. The average temperature is of
34.2 °C, with a minimum of
30 °C and a maximum of
38.3 °C.

On the coldest nights of the month, the temperature usually drops to around
26.5 °C.

On the warmest days of the month, the temperature usually reaches around
40.5 °C.

Precipitation amounts to only
1.6 mm, and all occurs in one day.
The day lasts on average 13 hours and 5 minutes. June 21, the summer solstice, is the longest day of the year in the Northern Hemisphere.

There are on average 9 hours of sunshine per day. So, the sun shines 70% of the time.
The average humidity is 62%.
The average wind speed is of
12.2 kph.

The average sea temperature is of
31.5 °C. Therefore, the sea is pleasantly warm and allows long swims.
July, the hottest month of the year, is generally a scorchingly hot month. The average temperature is of
34.4 °C, with a minimum of
30.5 °C and a maximum of
38.3 °C.

On the coldest nights of the month, the temperature usually drops to around
26.5 °C.

On the warmest days of the month, the temperature usually reaches around
41 °C.

Precipitation amounts to
16.4 mm, distributed over 2 days.
The day lasts on average 13 hours and 0 minutes.

There are on average 7 hours of sunshine per day. So, the sun shines 55% of the time.
The average humidity is 59%.
The average wind speed is of
14.1 kph.

The average sea temperature is of
31.7 °C. Therefore, the sea is pleasantly warm and allows long swims.
August is generally a scorchingly hot month. The average temperature is of
33.8 °C, with a minimum of
29.7 °C and a maximum of
37.9 °C.

On the coldest nights of the month, the temperature usually drops to around
24.5 °C.

On the warmest days of the month, the temperature usually reaches around
40.5 °C.

Precipitation amounts to
32.3 mm, distributed over 4 days.
The day lasts on average 12 hours and 40 minutes.

There are on average 8 hours of sunshine per day. So, the sun shines 62% of the time.
The average humidity is 64%.
The average wind speed is of
12.9 kph.

The average sea temperature is of
31.7 °C. Therefore, the sea is pleasantly warm and allows long swims.
September is generally a scorchingly hot month. The average temperature is of
33.4 °C, with a minimum of
28.9 °C and a maximum of
37.9 °C.

On the coldest nights of the month, the temperature usually drops to around
26 °C.

On the warmest days of the month, the temperature usually reaches around
40 °C.

Precipitation amounts to only
8.5 mm, distributed over 2 days.
The day lasts on average 12 hours and 10 minutes.

There are on average 9.5 hours of sunshine per day. So, the sun shines 77% of the time.
The average humidity is 66%.
The average wind speed is of
11.3 kph.

The average sea temperature is of
32.1 °C. Therefore, the sea is pleasantly warm and allows long swims.
October is generally a very hot month. The average temperature is of
31.6 °C, with a minimum of
26.6 °C and a maximum of
36.5 °C.

On the coldest nights of the month, the temperature usually drops to around
23.5 °C.

On the warmest days of the month, the temperature usually reaches around
39 °C.

Precipitation amounts to
20.2 mm, distributed over 2 days.
The day lasts on average 11 hours and 40 minutes.

There are on average 10 hours of sunshine per day. So, the sun shines 87% of the time.
The average humidity is 66%.
The average wind speed is of
10.7 kph.

The average sea temperature is of
31.5 °C. Therefore, the sea is pleasantly warm and allows long swims.
November is generally a very hot month. The average temperature is of
29.4 °C, with a minimum of
24.7 °C and a maximum of
34 °C.

On the coldest nights of the month, the temperature usually drops to around
21.5 °C.

On the warmest days of the month, the temperature usually reaches around
36 °C.

Precipitation amounts to
16.2 mm, and all occurs in one day.
The day lasts on average 11 hours and 20 minutes.

There are on average 9.5 hours of sunshine per day. So, the sun shines 82% of the time.
The average humidity is 68%.
The average wind speed is of
10.7 kph.

The average sea temperature is of
29.5 °C. Therefore, the sea is pleasantly warm and allows long swims.
December is generally a warm to hot, muggy month. The average temperature is of
27.3 °C, with a minimum of
22.9 °C and a maximum of
31.7 °C.

On the coldest nights of the month, the temperature usually drops to around
20.5 °C.

On the warmest days of the month, the temperature usually reaches around
33.5 °C.

Precipitation amounts to
17 mm, distributed over 2 days.
The day lasts on average 11 hours and 5 minutes. December 21, the winter solstice, is the shortest day of the year in the Northern Hemisphere.

There are on average 8.5 hours of sunshine per day. So, the sun shines 75% of the time.
The average humidity is 72%. Hence, the air is normally humid.
The average wind speed is of
10.8 kph.

The average sea temperature is of
27.7 °C. Therefore, the sea is pleasantly warm and allows long swims.