, with a pleasantly warm winter from December to February, and a hot summer from April to October, within which there is a muggy and relatively rainy period from July to October.
The city is located in the state of Sonora, on the coast of the Gulf of California (or Cortés Sea), at the 27th parallel, south of Hermosillo. On colder winter nights, the temperature can drop to 6/7 °C (43/45 °F), but in some years to as low as 2/3 °C (35/36 °F), while during the day it remains mild.
Typically, the highest temperatures, even more than 40 °C (104 °F), occur in June, but then, in July and August, the humidity increases and the heat becomes oppressive. The minimum temperatures often remain around 30 °C (86 °F).
From June to November, but with a higher probability from August to October, Guaymas can be affected by
of the Pacific Ocean, which generally arrive weakened, but sometimes they can bring heavy rains, as happened with Hurricane Jimena in September 2009. In any case, hurricanes are rare in June, the month in which they are most frequent is September, and in the past they have never occurred in November.
from July to September are due to the humid air that rises from the Gulf of California, and sometimes by the remnants of tropical cyclones that can reach the area.
is quite cold from December to April, while it becomes very warm from June to October.
Guaymas can be visited from mid-November to March, as it is the mildest season. During the day you can enjoy the sun, while in the evening you will need a sweater and a jacket.
For a beach holiday, you can go from mid-April to mid-May and in the first half of November.
. Here are the average temperatures.
January is generally a very mild month. The average temperature is of
17.9 °C, with a minimum of
11.6 °C and a maximum of
24.2 °C.
On the coldest nights of the month, the temperature usually drops to around
5.5 °C. However, it dropped to
2 °C in January 1997.
On the warmest days of the month, the temperature usually reaches around
29 °C. However, it reached
35.4 °C in January 2018.
Precipitation amounts to
15 mm, distributed over 2 days.
The day lasts on average 10 hours and 35 minutes.
There are on average 6.5 hours of sunshine per day. So, the sun shines 63% of the time.
The average humidity is 50%.
The average wind speed is of
9.1 kph.
The average sea temperature is of
18.3 °C. Therefore, the sea is very cool for swimming.
February is generally a warm month. The average temperature is of
19.1 °C, with a minimum of
13 °C and a maximum of
25.1 °C.
On the coldest nights of the month, the temperature usually drops to around
7 °C. However, it dropped to
2 °C in February 1997.
On the warmest days of the month, the temperature usually reaches around
31 °C. However, it reached
34.2 °C in February 2018.
Precipitation amounts to only
5 mm, and all occurs in one day.
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 69% of the time.
The average humidity is 48%.
The average wind speed is of
10.1 kph.
The average sea temperature is of
18.4 °C. Therefore, the sea is very cool for swimming.
March is generally a warm month. The average temperature is of
21.1 °C, with a minimum of
14.8 °C and a maximum of
27.4 °C.
On the coldest nights of the month, the temperature usually drops to around
9 °C. However, it dropped to
5 °C in March 2001.
On the warmest days of the month, the temperature usually reaches around
33 °C. However, it reached
37.5 °C in March 2018.
Precipitation amounts to only
5 mm, and all occurs in one day.
The day lasts on average 12 hours and 0 minutes.
There are on average 7.5 hours of sunshine per day. So, the sun shines 62% of the time.
The average humidity is 44%.
The average wind speed is of
11.5 kph.
The average sea temperature is of
19.3 °C. Therefore, the sea is very cool for swimming.
April is generally a warm to hot month. The average temperature is of
23.7 °C, with a minimum of
17.8 °C and a maximum of
29.5 °C.
On the coldest nights of the month, the temperature usually drops to around
12.5 °C. However, it dropped to
9 °C in April 1996.
On the warmest days of the month, the temperature usually reaches around
35 °C. However, it reached
39 °C in April 2006.
Precipitation amounts to only
0 mm, so on average it never rains in the whole month.
The day lasts on average 12 hours and 55 minutes.
There are on average 8.5 hours of sunshine per day. So, the sun shines 65% of the time.
The average humidity is 42%.
The average wind speed is of
12.5 kph.
The average sea temperature is of
21.3 °C. Therefore, the sea is cool for swimming.
May is generally a warm to hot month. The average temperature is of
27 °C, with a minimum of
21.8 °C and a maximum of
32.3 °C.
On the coldest nights of the month, the temperature usually drops to around
16.5 °C. However, it dropped to
14 °C in May 1991.
On the warmest days of the month, the temperature usually reaches around
37 °C. However, it reached
44.1 °C in May 2018.
Precipitation amounts to only
0 mm, so on average it never rains in the whole month.
The day lasts on average 13 hours and 35 minutes.
There are on average 9.5 hours of sunshine per day. So, the sun shines 69% of the time.
The average humidity is 41%.
The average wind speed is of
12.8 kph.
The average sea temperature is of
24.2 °C. Therefore, the sea is warm enough for swimming.
June is generally a very hot month. The average temperature is of
30.9 °C, with a minimum of
26.7 °C and a maximum of
35.2 °C.
On the coldest nights of the month, the temperature usually drops to around
21.5 °C. However, it dropped to
18 °C in June 1997.
On the warmest days of the month, the temperature usually reaches around
40 °C. However, it reached
44 °C in June 1998.
Precipitation amounts to only
0 mm, so on average it never rains in the whole month.
The day lasts on average 13 hours and 55 minutes. June 21, the summer solstice, is the longest day of the year in the Northern Hemisphere.
There are on average 10 hours of sunshine per day. So, the sun shines 72% of the time.
The average humidity is 49%.
The average wind speed is of
13.4 kph.
The average sea temperature is of
27.7 °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
32.4 °C, with a minimum of
29.1 °C and a maximum of
35.8 °C.
On the coldest nights of the month, the temperature usually drops to around
25 °C. However, it dropped to
22 °C in July 2003.
On the warmest days of the month, the temperature usually reaches around
39.5 °C. However, it reached
43 °C in July 1997.
Precipitation amounts to
45 mm, distributed over 6 days.
The day lasts on average 13 hours and 40 minutes.
There are on average 8 hours of sunshine per day. So, the sun shines 58% of the time.
The average humidity is 58%.
The average wind speed is of
13.4 kph.
The average sea temperature is of
29.7 °C. Therefore, the sea is pleasantly warm and allows long swims.
August is generally a scorchingly hot month. The average temperature is of
32.4 °C, with a minimum of
28.9 °C and a maximum of
35.9 °C.
On the coldest nights of the month, the temperature usually drops to around
24.5 °C. However, it dropped to
22 °C in August 1991.
On the warmest days of the month, the temperature usually reaches around
39.5 °C. However, it reached
42 °C in August 2005.
Precipitation amounts to
70 mm, distributed over 7 days.
The day lasts on average 13 hours and 5 minutes.
There are on average 8 hours of sunshine per day. So, the sun shines 59% of the time.
The average humidity is 63%.
The average wind speed is of
12.6 kph.
The average sea temperature is of
30.5 °C. Therefore, the sea is pleasantly warm and allows long swims.
September is generally a very hot month. The average temperature is of
31.1 °C, with a minimum of
27.2 °C and a maximum of
35.1 °C.
On the coldest nights of the month, the temperature usually drops to around
22 °C. However, it dropped to
19 °C in September 1993.
On the warmest days of the month, the temperature usually reaches around
39 °C. However, it reached
45.1 °C in September 2020.
Precipitation amounts to
35 mm, distributed over 3 days.
The day lasts on average 12 hours and 20 minutes.
There are on average 8 hours of sunshine per day. So, the sun shines 64% of the time.
The average humidity is 63%.
The average wind speed is of
11 kph.
The average sea temperature is of
30.2 °C. Therefore, the sea is pleasantly warm and allows long swims.
October is generally a warm to hot month. The average temperature is of
27.2 °C, with a minimum of
21.7 °C and a maximum of
32.7 °C.
On the coldest nights of the month, the temperature usually drops to around
15.5 °C. However, it dropped to
9.3 °C in October 2020.
On the warmest days of the month, the temperature usually reaches around
37.5 °C. However, it reached
40.5 °C in October 2020.
Precipitation amounts to
15 mm, distributed over 2 days.
The day lasts on average 11 hours and 30 minutes.
There are on average 8 hours of sunshine per day. So, the sun shines 71% of the time.
The average humidity is 53%.
The average wind speed is of
9.6 kph.
The average sea temperature is of
28.1 °C. Therefore, the sea is pleasantly warm and allows long swims.
November is generally a warm month. The average temperature is of
22.2 °C, with a minimum of
16.3 °C and a maximum of
28.1 °C.
On the coldest nights of the month, the temperature usually drops to around
9.5 °C. However, it dropped to
4 °C in November 2003.
On the warmest days of the month, the temperature usually reaches around
33.5 °C. However, it reached
39 °C in November 2020.
Precipitation amounts to
10 mm, and all occurs in one day.
The day lasts on average 10 hours and 40 minutes.
There are on average 7.5 hours of sunshine per day. So, the sun shines 69% of the time.
The average humidity is 51%.
The average wind speed is of
9 kph.
The average sea temperature is of
24.1 °C. Therefore, the sea is warm enough for swimming.
December, the coldest month of the year, is generally a very mild month. The average temperature is of
17.8 °C, with a minimum of
11.7 °C and a maximum of
23.9 °C.
On the coldest nights of the month, the temperature usually drops to around
5.5 °C. However, it dropped to
1 °C in December 2003.
On the warmest days of the month, the temperature usually reaches around
29 °C. However, it reached
32 °C in December 2004.
Precipitation amounts to
15 mm, distributed over 2 days.
The day lasts on average 10 hours and 25 minutes. December 21, the winter solstice, is the shortest day of the year in the Northern Hemisphere.
There are on average 6.5 hours of sunshine per day. So, the sun shines 62% of the time.
The average humidity is 51%.
The average wind speed is of
8.8 kph.
The average sea temperature is of
20.1 °C. Therefore, the sea is very cool for swimming.