Sonora Weather in September

Average temperatures, rainfall, sunshine and the best places to visit in Sonora, Mexico in September.

🔎
Puerto Peñasco Hermosillo Nogales Álamos

Considering a trip to Sonora, Mexico this September and wondering about the expected weather conditions? Find all the crucial information you need right here, addressing your question:

What to Expect in Sonora in September

Sonora, Mexico is a region in Mexico. September in Sonora generally has temperatures that range from very warm to very hot, with precipitation levels ranging from low to high. It's the height of summer.

Temperatures

Based on our climate data spanning from 1990-2020, the average maximum temperature is very warm in Nogales at 31°C (88°F) to very hot in Ciudad Obregón at 38°C (100°F). Nighttime temperatures generally drop to 26°C (79°F) in Ciudad Obregón and 15°C (59°F) in Nogales. The temperatures mentioned for daytime and nighttime are general averages. However there can be days that surpass these temperatures. So equip yourself with clothing that can handle the potential heat.

To learn more about the conditions in specific areas of Sonora, Mexico, check out the map below.

Precipitation

In September, precipitation varies across different areas. From low rainfall in Puerto Peñasco with an average of 9.3 mm (0.4 in) to high rainfall in Álamos with 128 mm (5 in).

Explore Sonora by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Best Places to Visit in Sonora in September

Click on a destination dot for more details. Toggle the map to compare temperatures or precipitation across Sonora.

Conditions Temperatures Precipitation
perfect weather
pleasant
tolerable
unpleasant
poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).

Popular Destinations in Sonora

What is the weather like in September for some of the most popular destinations in Sonora, Mexico?

Temperature range in Sonora (September)

Precipitation variation in Sonora (September)

Puerto Peñasco

In September Puerto Peñasco generally has very high temperatures with maximum daytime temperatures around 34°C (93°F), minimum nighttime temperatures around 28°C (82°F) and low monthly rainfall. So on average the conditions are pleasant that month.

« August
September
October »
August
September
October
Max temperature
35°C (95°F)
34°C (93°F)
30°C (86°F)
Min temperature
30°C (86°F)
28°C (82°F)
23°C (73°F)
Monthly rainfall
7.4 mm (0.3 in)
9.3 mm (0.4 in)
8.4 mm (0.3 in)
Monthly rainy days
3 days
2 days
a single day
Weather conditions
tolerable
pleasant
perfect
Climate in Puerto Peñasco →

Hermosillo

In September Hermosillo generally has extremely high temperatures with maximum daytime temperatures around 38°C (100°F), minimum nighttime temperatures around 25°C (77°F) and moderate monthly rainfall. So on average the conditions are poor that month.

« August
September
October »
August
September
October
Max temperature
39°C (102°F)
38°C (100°F)
35°C (95°F)
Min temperature
27°C (81°F)
25°C (77°F)
19°C (66°F)
Monthly sun hours
282 hours
238 hours
261 hours
Monthly rainfall
60 mm (2.4 in)
59 mm (2.3 in)
22 mm (0.9 in)
Monthly rainy days
8 days
4 days
2 days
Weather conditions
poor
poor
tolerable
Climate in Hermosillo →

Nogales

In September Nogales generally has very high temperatures with maximum daytime temperatures around 31°C (88°F), minimum nighttime temperatures around 15°C (59°F) and moderate monthly rainfall. So on average the conditions are pleasant that month.

« August
September
October »
August
September
October
Max temperature
33°C (91°F)
31°C (88°F)
28°C (82°F)
Min temperature
18°C (64°F)
15°C (59°F)
9°C (48°F)
Monthly rainfall
91 mm (3.6 in)
66 mm (2.6 in)
15 mm (0.6 in)
Monthly rainy days
18 days
12 days
4 days
Weather conditions
pleasant
pleasant
perfect
Climate in Nogales →

Álamos

In September Álamos generally has very high temperatures with maximum daytime temperatures around 35°C (95°F), minimum nighttime temperatures around 23°C (73°F) and high monthly rainfall. So on average the conditions are poor that month.

« August
September
October »
August
September
October
Max temperature
35°C (95°F)
35°C (95°F)
35°C (95°F)
Min temperature
24°C (75°F)
23°C (73°F)
19°C (66°F)
Monthly rainfall
174 mm (6.9 in)
128 mm (5 in)
44 mm (1.7 in)
Monthly rainy days
13 days
8 days
3 days
Weather conditions
poor
poor
unpleasant
Climate in Álamos →

San Carlos

In September San Carlos generally has very high temperatures with maximum daytime temperatures around 34°C (93°F), minimum nighttime temperatures around 28°C (82°F) and moderate monthly rainfall. So on average the conditions are tolerable that month.

« August
September
October »
August
September
October
Max temperature
35°C (95°F)
34°C (93°F)
32°C (90°F)
Min temperature
29°C (84°F)
28°C (82°F)
24°C (75°F)
Monthly rainfall
32 mm (1.3 in)
69 mm (2.7 in)
19 mm (0.7 in)
Monthly rainy days
7 days
3 days
2 days
Weather conditions
unpleasant
tolerable
perfect
Climate in San Carlos →

Is your destination not in the list? Have a look at all destinations in Sonora, in Mexico.

Popular cities in September

Day & night temperatures, rainfall and average weather in Sonora in September.

City Weather Day temp Night temp Rainfall
Puerto Peñasco 34°C (93°F) 28°C (82°F) 9.3 mm (0.4 in)
Hermosillo 38°C (100°F) 25°C (77°F) 59 mm (2.3 in)
Nogales 31°C (88°F) 15°C (59°F) 66 mm (2.6 in)
Álamos 35°C (95°F) 23°C (73°F) 128 mm (5 in)
San Carlos 34°C (93°F) 28°C (82°F) 69 mm (2.7 in)
Ciudad Obregón 38°C (100°F) 26°C (79°F) 88 mm (3.5 in)

Sonora weather in September: frequently asked questions

What is the weather like in Sonora, Mexico in September?

September in Sonora, Mexico brings poor weather. In Puerto Peñasco, daytime temperatures are typically around 34°C (93°F) and nighttime lows hover near 28°C (82°F).

What is the average temperature in Sonora, Mexico in September?

Daytime temperatures in Puerto Peñasco peak at roughly 34°C (93°F) in September, dropping to about 28°C (82°F) overnight.

Does Sonora, Mexico get a lot of rain in September?

September is on the drier side in Sonora, Mexico. Puerto Peñasco averages only about 9.3 mm (0.4 in), with most days staying dry.

Is September a Good Time to Visit Sonora, Mexico?

In our view, September might not be the best time to travel to Sonora, Mexico with often pleasant weather in Puerto Peñasco.

Generally speaking, January, February, March, April, May, November and December provide perfect weather in Puerto Peñasco. In contrast, July, August and September tend to have poor weather conditions.

Interested in more climate information?

We have much more information about the climate in Sonora.

Weather and climate has detailed information for every country in the world. Are you going to Mexico? Get detailed historical weather averages for many cities in Mexico.

Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal travel conditions. Find out where to go with our weather planner.

Bucket list

Need travel inspiration? Check out our bucket list articles and be inspired.

Explore the Majestic Copper Canyons of Mexico

Explore the vast Copper Canyons in Chihuahua, Mexico—larger than the Grand Canyon. Discover scenic train rides, hikes, and the Tarahumara people.
These are the most beautiful Mayan ruins and Mayan temples in Mexico

Mexico is a destination where you can immerse yourself in ancient cultures and civilizations. In this article we have listed our favorite Mayan ruins.
Tips, to-do's and nicest restaurants in Mexico City

Mexico City, one of the most famous and notorious cities of the world. The best time to visit is between March and May, but it can be visited year round.

Zihuatanejo: A Pacific paradise with beautiful beaches

Zihuatanejo has some of Mexico's top beaches. Unlike other off-the-beaten-path destinations in Mexico, Zihua is very accessible and sustainable.
Must visit in Mexico →