Ciudad Obregón climate
Ciudad Obregón (Sonora, Mexico) has a hot semi-arid climate (Köppen BSh). The average temperature over the year is 25 °C78 °F, and about 394 mm16 in of precipitation falls in an average year.
Temperature by month
Precipitation by month
Ciudad Obregón climate table
| Month | High °C°F | Low °C°F | Mean °C°F | Precip. mmin |
|---|---|---|---|---|
| Jan | 2577 | 1253 | 1865 | 130.5 |
| Feb | 2680 | 1254 | 1967 | 120.5 |
| Mar | 2985 | 1458 | 2271 | 60.2 |
| Apr | 3290 | 1763 | 2576 | 20.1 |
| May | 3595 | 2069 | 2882 | 10.0 |
| Jun | 38101 | 2577 | 3289 | 170.7 |
| Jul | 3697 | 2780 | 3188 | 1024.0 |
| Aug | 3595 | 2780 | 3188 | 963.8 |
| Sep | 3595 | 2577 | 3086 | 993.9 |
| Oct | 3392 | 2170 | 2781 | 261.0 |
| Nov | 2985 | 1661 | 2373 | 110.4 |
| Dec | 2577 | 1254 | 1965 | 80.3 |
| Year | 38101 | 1253 | 2578 | 39416 |
“Year” row: highest monthly high, lowest monthly low, annual mean and annual total.
| Month | Humid. | Cloud | Solar | Daylight |
|---|---|---|---|---|
| Jan | 46% | 34% | 4.2 | 10:35 |
| Feb | 44% | 38% | 5.0 | 11:11 |
| Mar | 39% | 31% | 6.4 | 11:56 |
| Apr | 36% | 31% | 7.4 | 12:47 |
| May | 35% | 20% | 8.1 | 13:30 |
| Jun | 43% | 28% | 7.8 | 13:52 |
| Jul | 60% | 65% | 6.6 | 13:43 |
| Aug | 67% | 59% | 6.4 | 13:06 |
| Sep | 66% | 38% | 5.9 | 12:17 |
| Oct | 55% | 21% | 5.4 | 11:27 |
| Nov | 48% | 28% | 4.4 | 10:45 |
| Dec | 48% | 33% | 3.9 | 10:25 |
Humid. = average relative humidity at 2 m; cloud = average cloud amount; solar = average daily solar energy reaching the ground in kWh/m² (all-sky); daylight in hours:minutes, calculated for the 15th of each month.
What the climate of Ciudad Obregón is like
The warmest month is June, with an average high of 38 °C101 °F and a low of 25 °C77 °F. The coldest is January, when highs average 25 °C77 °F and lows 12 °C53 °F. There is a clear seasonal cycle, with 13.3 °C24 °F between the average temperature of the warmest and the coolest month.
It is dry, with about 394 mm16 in of precipitation per year. The wettest three-month stretch is July–September, which brings 75% of the annual total. Months with less than 20 mm0.8 in on average: November–June. The wettest month is July (102 mm4.0 in), the driest is May (1 mm0.0 in).
Relative humidity ranges from 35% in May to 67% in August. The clearest skies (lowest average cloud amount, 20%) are typical of May. Average wind speed near the ground ranges from 7 km/h (5 mph) in August to 11 km/h (7 mph) in June. Daylight lasts from about 10.4 hours in December to 13.9 hours in June.
Best time to visit Ciudad Obregón
Based on these averages, the most comfortable months for sightseeing and outdoor activities are November–March: average highs of 25 °C77 °F to 29 °C85 °F with 6 mm0.2 in to 13 mm0.5 in of precipitation per month.
The most challenging month is June, which is hot, with average highs of 38 °C101 °F.
Comfort score: months are ranked by how close they come to an average high of 21–28 °C (70–82 °F), lows above 5 °C (41 °F), little precipitation and moderate humidity. The best-ranked months of each place are recommended, even where none meets all of these. These are general rules of thumb applied to long-term averages.
What to pack for Ciudad Obregón
- Winter (December–February) — highs 2577 to 26 °C80 °F, lows around 12 °C53 °F, about 11 mm0.4 in of precipitation a month. Pack light summer clothes such as T-shirts, shorts or light dresses and an extra layer for the cooler mornings and evenings.
- Spring (March–May) — highs 2985 to 35 °C95 °F, lows 1458 to 20 °C69 °F, about 3 mm0.1 in of precipitation a month. Pack very light, breathable clothing, a sun hat and plenty of water and an extra layer for the cooler mornings and evenings.
- Summer (June–August) — highs 3595 to 38 °C101 °F, lows 2577 to 27 °C80 °F, about 72 mm2.8 in of precipitation a month. Pack very light, breathable clothing, a sun hat and plenty of water.
- Autumn (September–November) — highs 2985 to 35 °C95 °F, lows 1661 to 25 °C77 °F, about 46 mm1.8 in of precipitation a month. Pack very light, breathable clothing, a sun hat and plenty of water.
How Ciudad Obregón compares
Compared with Hermosillo, about 205 km to the northwest, Ciudad Obregón is on average 1.6 °C2.9 °F warmer and receives a similar amount of precipitation. The difference is largest in December (3 °C5.4 °F warmer).
Of the 96 places in Mexico covered by World Climates, Ciudad Obregón is the 26th warmest by annual mean temperature and the 80th wettest by annual precipitation. See all of them on the Mexico climate page.
Places in other countries with the most similar temperature and rainfall pattern (seasons shifted for the other hemisphere where needed): Thiès (Senegal, BSh), Roebourne (Australia, BWh) and Marble Bar (Australia, BSh).
Nearby places
- Navojoa 67 km · 25 °C78 °F · 502 mm20 in
- Heroica Guaymas 106 km · 25 °C77 °F · 341 mm13 in
- Hermosillo 205 km · 24 °C75 °F · 382 mm15 in
- Los Mochis 211 km · 26 °C78 °F · 536 mm21 in
- Cuauhtémoc 319 km · 14 °C58 °F · 483 mm19 in
- La Paz 374 km · 25 °C76 °F · 241 mm9.5 in
- Culiacán 392 km · 26 °C79 °F · 704 mm28 in
- Chihuahua 399 km · 19 °C66 °F · 371 mm15 in
Frequently asked questions
What is the warmest month in Ciudad Obregón?
June is the warmest month in Ciudad Obregón, with an average high of 38 °C (101 °F) and an average low of 25 °C (77 °F).
What is the coldest month in Ciudad Obregón?
January is the coldest month, with an average high of 25 °C (77 °F) and an average low of 12 °C (53 °F).
When does it rain the most in Ciudad Obregón?
July is the wettest month with about 102 mm (4.0 in) of precipitation; May is the driest with about 1 mm (0.0 in).
What is the best time to visit Ciudad Obregón?
Judging by long-term averages, the most comfortable months are November–March.
About this data
All figures are 25-year averages (January 2001 – December 2025) from the NASA POWER project. Temperature, humidity, wind and precipitation come from the MERRA-2 reanalysis (precipitation is the bias-corrected MERRA-2 product), cloud and solar values from CERES satellite data. They describe a grid cell of roughly 50–70 km, not a single weather station, so they can differ from airport records — most of all on coasts, in mountains and for rainfall. Average highs and lows are the monthly mean temperature plus/minus half of the average daily temperature range. Counts of rainy days are not part of this dataset.
The grid cell’s average elevation is 107 m, while Ciudad Obregón lies at about 38 m. Temperatures on this page were therefore adjusted by +0.4 °C0.8 °F using the standard lapse rate of 6.5 °C per 1,000 m.