, with pleasantly warm winters and very hot, muggy summers. Precipitation, decidedly scarce, occurs mostly between December and March.
Jask (or Bandar-e Jask) is a small city of 17,000 inhabitants located in the south-east of Iran, in the province of Hormozgan, on the coast of the Gulf of Oman, at almost 26 degrees north latitude.
, from December to February, is pleasantly warm, so much so that the average in January exceeds 20 °C (68 °F). Rainfall is rare even in this season, although there can be a period of bad weather every now and then.
Unlike in the interior of Iran, cold waves do not arrive here. However, there can sometimes be a bit cool periods, with highs below 20 °C (68 °F). Over the last twenty years, the temperature at night has dropped to 8 °C (46.5 °F) in February 2008.
, from June to August, is very hot. Daytime temperatures are not as high as on the Persian Gulf coast, and the
blows constantly, however, the humidity is very high, so the feeling of heat is unpleasant.
Sometimes, in the rare cases when the wind blows from the interior, the temperature can reach or exceed 40 °C (104 °F). In June 2017 it reached 43.6 °C (110.5 °F).
Although summer is a dry season, this southeastern part of Iran is marginally affected by the
, so some cloudiness can form, to the point that July and August are the least sunny months of the year, and the temperature also drops a bit compared to June.
In addition, the coast of the Gulf of Oman can occasionally be marginally affected by
(which usually pass further south, over the Arabian Peninsula), as happened with Cyclone Gonu in early June 2007 and Cyclone Phet in early June 2010, both of which brought heavy rains.
Cyclones form from May to November, and are more frequent at the beginning of the period (May-June), and a little less at the end (October-November).
. Here are the average temperatures.
January, the coolest month of the year, is generally a warm month. The average temperature is of
20.6 °C, with a minimum of
17.5 °C and a maximum of
23.8 °C.

On the coldest nights of the month, the temperature usually drops to around
13.5 °C.

On the warmest days of the month, the temperature usually reaches around
26 °C.

Precipitation amounts to
32 mm, distributed over 2 days.
The day lasts on average 10 hours and 40 minutes.

There are on average 8 hours of sunshine per day. So, the sun shines 74% of the time.
The average humidity is 63%.
The average wind speed is of
14.9 kph.
February is generally a warm month. The average temperature is of
21.7 °C, with a minimum of
18.8 °C and a maximum of
24.6 °C.

On the coldest nights of the month, the temperature usually drops to around
14.5 °C.

On the warmest days of the month, the temperature usually reaches around
27.5 °C.

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

There are on average 8 hours of sunshine per day. So, the sun shines 72% of the time.
The average humidity is 65%.
The average wind speed is of
17 kph.
March is generally a warm to hot month. The average temperature is of
23.8 °C, with a minimum of
21 °C and a maximum of
26.7 °C.

On the coldest nights of the month, the temperature usually drops to around
17.5 °C.

On the warmest days of the month, the temperature usually reaches around
30.5 °C.

Precipitation amounts to
26.8 mm, distributed over 2 days.
The day lasts on average 12 hours and 0 minutes.

There are on average 8 hours of sunshine per day. So, the sun shines 66% of the time.
The average humidity is 69%.
The average wind speed is of
16.9 kph.
April is generally a warm to hot month. The average temperature is of
27.4 °C, with a minimum of
24.4 °C and a maximum of
30.3 °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 50 minutes.

There are on average 9.5 hours of sunshine per day. So, the sun shines 73% of the time.
The average humidity is 68%.
The average wind speed is of
16.6 kph.
May is generally a very hot month. The average temperature is of
30.6 °C, with a minimum of
27.6 °C and a maximum of
33.7 °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
38.5 °C.

Precipitation amounts to only
0.1 mm, distributed over 0 days.
The day lasts on average 13 hours and 30 minutes.

There are on average 10.5 hours of sunshine per day. So, the sun shines 77% of the time.
The average humidity is 68%.
The average wind speed is of
16.1 kph.
June, the hottest month of the year, is generally a scorchingly hot, muggy month. The average temperature is of
32.4 °C, with a minimum of
30 °C and a maximum of
34.8 °C.

On the coldest nights of the month, the temperature usually drops to around
27 °C.

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

Precipitation amounts to only
5.4 mm, distributed over 0 days.
The day lasts on average 13 hours and 50 minutes. June 21, the summer solstice, is the longest day of the year in the Northern Hemisphere.

There are on average 9.5 hours of sunshine per day. So, the sun shines 68% of the time.
The average humidity is 74%. Hence, the air is normally humid.
The average wind speed is of
18.6 kph.
July is generally a scorchingly hot, muggy month. The average temperature is of
32.2 °C, with a minimum of
30.7 °C and a maximum of
33.8 °C.

On the coldest nights of the month, the temperature usually drops to around
28 °C.

On the warmest days of the month, the temperature usually reaches around
38 °C.

Precipitation amounts to only
0.3 mm, distributed over 0 days.
The day lasts on average 13 hours and 35 minutes.

There are on average 7 hours of sunshine per day. So, the sun shines 53% of the time.
The average humidity is 80%. Hence, the air is normally humid.
The average wind speed is of
21.1 kph.
August is generally a very hot, muggy month. The average temperature is of
31.4 °C, with a minimum of
29.8 °C and a maximum of
32.9 °C.

On the coldest nights of the month, the temperature usually drops to around
28 °C.

On the warmest days of the month, the temperature usually reaches around
38 °C.

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

There are on average 8 hours of sunshine per day. So, the sun shines 60% of the time.
The average humidity is 80%. Hence, the air is normally humid.
The average wind speed is of
20 kph.
September is generally a very hot, muggy month. The average temperature is of
30.6 °C, with a minimum of
28.5 °C and a maximum of
32.6 °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
37.5 °C.

Precipitation amounts to only
0 mm, so on average it never rains in the whole month.
The day lasts on average 12 hours and 20 minutes.

There are on average 9 hours of sunshine per day. So, the sun shines 72% of the time.
The average humidity is 77%. Hence, the air is normally humid.
The average wind speed is of
16.7 kph.
October is generally a very hot, muggy month. The average temperature is of
29 °C, with a minimum of
26.2 °C and a maximum of
31.9 °C.

On the coldest nights of the month, the temperature usually drops to around
23 °C.

On the warmest days of the month, the temperature usually reaches around
36.5 °C.

Precipitation amounts to only
0.3 mm, distributed over 0 days.
The day lasts on average 11 hours and 30 minutes.

There are on average 9.5 hours of sunshine per day. So, the sun shines 81% of the time.
The average humidity is 71%. Hence, the air is normally humid.
The average wind speed is of
14 kph.
November is generally a warm to hot month. The average temperature is of
25.5 °C, with a minimum of
22.4 °C and a maximum of
28.7 °C.

On the coldest nights of the month, the temperature usually drops to around
19 °C.

On the warmest days of the month, the temperature usually reaches around
32 °C.

Precipitation amounts to only
8.3 mm, and all occurs in one day.
The day lasts on average 10 hours and 50 minutes.

There are on average 9 hours of sunshine per day. So, the sun shines 83% of the time.
The average humidity is 63%.
The average wind speed is of
13.7 kph.
December is generally a warm month. The average temperature is of
22.4 °C, with a minimum of
19.1 °C and a maximum of
25.7 °C.

On the coldest nights of the month, the temperature usually drops to around
13.5 °C.

On the warmest days of the month, the temperature usually reaches around
29 °C.

Precipitation amounts to
22.4 mm, distributed over 2 days.
The day lasts on average 10 hours and 30 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 80% of the time.
The average humidity is 59%.
The average wind speed is of
13.9 kph.