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Mazatlán, Sinaloa Weather by Month and Climate Averages
Monthly normals · Rain · Snow
Sunshine · Freeze dates · Records · Best time to visit
What is the weather like in Mazatlán, Sinaloa?
Mazatlán, Sinaloa gets 699 mm of precipitation a year over about 39 rainy days. August is the warmest month (average high 34°C) and January the coldest (average low 14°C).
Semi-arid climate
Mazatlán, Sinaloa has hot summers and warm winters. Daytime highs range from about 26°C in February to 34°C in August. September is usually the wettest month. The most comfortable time to visit is typically January to February, when daytime highs sit near 26°C.
| Season | Months | Avg low | Avg high |
|---|---|---|---|
| Winter | Dec–Feb | 14° | 27° |
| Spring | Mar–May | 18° | 28° |
| Summer | Jun–Aug | 25° | 33° |
| Autumn | Sep–Nov | 23° | 32° |
How much rain does Mazatlán get?
Mazatlán gets 699 mm of precipitation in an average year, spread over about 39 days with measurable rain. That is fewer rainy days than 78% of Mexico.
September is the wettest month, with 228 mm. May is the driest, with 0 mm. August has the most rainy days, about 11.
The longest dry spell in the last five years lasted 66 days, to March 9, 2022.
From October 2025 to September 2026 Mazatlán got 1077 mm of rain, against a normal of 699 mm for those months. August 2026 had the most, with 325 mm.
Mazatlán weather by month
Mazatlán weather in January
In January, Mazatlán averages a high of 27°C and a low of 14°C. It gets 14 mm of precipitation over about 1 rainy days. Estimated sunshine is 57% of daylight hours, derived from ERA5 cloud cover. The January record high is 33°C (2018) and the record low is 7°C (2008). January is one of the most comfortable months to visit.
Mazatlán weather in February
In February, Mazatlán averages a high of 27°C and a low of 14°C. It gets 7 mm of precipitation over about 1 rainy days. Estimated sunshine is 58% of daylight hours, derived from ERA5 cloud cover. The February record high is 34°C (2018) and the record low is 3°C (2011). February is one of the most comfortable months to visit.
Mazatlán weather in March
In March, Mazatlán averages a high of 27°C and a low of 16°C. It gets 2 mm of precipitation over about 0 rainy days. Estimated sunshine is 61% of daylight hours, derived from ERA5 cloud cover. The March record high is 34°C (2017) and the record low is 8°C (2013).
Mazatlán weather in April
In April, Mazatlán averages a high of 28°C and a low of 17°C. It gets 5 mm of precipitation over about 0 rainy days. Estimated sunshine is 62% of daylight hours, derived from ERA5 cloud cover. The April record high is 38°C (2026) and the record low is 9°C (1994).
Mazatlán weather in May
In May, Mazatlán averages a high of 31°C and a low of 21°C. It gets 0 mm of precipitation over about 0 rainy days. Estimated sunshine is 72% of daylight hours, derived from ERA5 cloud cover. The May record high is 40°C (2026) and the record low is 13°C (2006).
Mazatlán weather in June
In June, Mazatlán averages a high of 33°C and a low of 25°C. It gets 28 mm of precipitation over about 2 rainy days. Estimated sunshine is 59% of daylight hours, derived from ERA5 cloud cover. The June record high is 41°C (2026) and the record low is 18°C (2026).
Mazatlán weather in July
In July, Mazatlán averages a high of 33°C and a low of 25°C. It gets 131 mm of precipitation over about 8 rainy days. Estimated sunshine is 36% of daylight hours, derived from ERA5 cloud cover. The July record high is 39°C (2026) and the record low is 15°C (1997).
Mazatlán weather in August
In August, Mazatlán averages a high of 34°C and a low of 25°C. It gets 188 mm of precipitation over about 11 rainy days. Estimated sunshine is 28% of daylight hours, derived from ERA5 cloud cover. The August record high is 40°C (2026) and the record low is 16°C (2026).
Mazatlán weather in September
In September, Mazatlán averages a high of 33°C and a low of 25°C. It gets 228 mm of precipitation over about 10 rainy days. Estimated sunshine is 39% of daylight hours, derived from ERA5 cloud cover. The September record high is 39°C (2026) and the record low is 15°C (2026).
Mazatlán weather in October
In October, Mazatlán averages a high of 33°C and a low of 24°C. It gets 51 mm of precipitation over about 3 rainy days. Estimated sunshine is 66% of daylight hours, derived from ERA5 cloud cover. The October record high is 39°C (2026) and the record low is 16°C (2026).
Mazatlán weather in November
In November, Mazatlán averages a high of 31°C and a low of 19°C. It gets 37 mm of precipitation over about 2 rainy days. Estimated sunshine is 73% of daylight hours, derived from ERA5 cloud cover. The November record high is 37°C (2005) and the record low is 10°C (1979).
Mazatlán weather in December
In December, Mazatlán averages a high of 28°C and a low of 16°C. It gets 7 mm of precipitation over about 1 rainy days. Estimated sunshine is 62% of daylight hours, derived from ERA5 cloud cover. The December record high is 33°C (2006) and the record low is 8°C (2007).
Sunshine, humidity and wind in Mazatlán
November is the sunniest month in Mazatlán, with estimated sunshine of 73% of daylight hours from ERA5 cloud cover. August is the cloudiest, at 28%. The annual cloud-cover estimate is 56% of daylight hours; it is not a measurement of sunshine duration. Mazatlán is sunnier than 68% of Mexico.
Humidity peaks in September at 82% and is lowest in June at 78%.
Mazatlán has about 101 days a year above 32°C. Mazatlán is hotter than 51% of Mexico.
Mazatlán weather records
These records cover COLONIA JUAN CARRAS during 1973–2026. Earlier records or other stations in the city may differ.
The hottest temperature on record at the Mazatlán station is 41°C, on June 6, 2026. The coldest is 3°C, on February 4, 2011.
The wettest day in the available station history brought 254 mm of precipitation, on September 23, 2000.
28 all-time records have been set at the station since 1973.
The best time to visit Mazatlán
The most comfortable time to visit is typically January to February, when daytime highs sit near 26°C.
Winter (December–February) is warm, with average highs around 27°C and lows near 15°C.
Spring (March–May) is hot, with average highs around 28°C and lows near 18°C.
Summer (June–August) is hot, with average highs around 33°C and lows near 25°C. It can feel humid.
Autumn (September–November) is hot, with average highs around 32°C and lows near 23°C.
Monthly climate
| Month | Average low | Average high | Precip | Rain days | Humidity | Estimated sunshine | Record high | Record low |
|---|---|---|---|---|---|---|---|---|
| January | 14° | 27° | 14 mm | 1 | 79% | 57% | 33° | 7° |
| February | 14° | 27° | 7.1 mm | 1 | 79% | 58% | 34° | 3° |
| March | 16° | 27° | 2.3 mm | 0 | 80% | 61% | 34° | 8° |
| April | 17° | 28° | 5.3 mm | 0 | 80% | 62% | 38° | 9° |
| May | 21° | 31° | 0.0 mm | 0 | 79% | 72% | 40° | 13° |
| June | 25° | 33° | 28 mm | 2 | 78% | 59% | 41° | 18° |
| July | 25° | 33° | 131 mm | 8 | 79% | 36% | 39° | 15° |
| August | 25° | 34° | 188 mm | 11 | 81% | 28% | 40° | 16° |
| September | 25° | 33° | 228 mm | 10 | 82% | 39% | 39° | 15° |
| October | 24° | 33° | 51 mm | 3 | 81% | 66% | 39° | 16° |
| November | 19° | 31° | 37 mm | 2 | 78% | 73% | 37° | 10° |
| December | 16° | 28° | 6.9 mm | 1 | 80% | 62% | 33° | 8° |
Station: COLONIA JUAN CARRAS, 2 km from the city. Temperature normal baseline: 1991–2020, calculated from available NOAA GHCN-Daily observations. Available station history: 1973–2026; record values refer to this station and period, not the entire city’s history. Precipitation includes rain and the water equivalent of frozen precipitation; snowfall depth is shown separately when available. Sources and methods
From ERA5 reanalysis. Sunshine is estimated from cloud cover.
Mazatlán climate questions
How much rain does Mazatlán get?
Mazatlán gets 699 mm of precipitation in an average year, over about 39 rainy days.
What is the wettest month in Mazatlán?
September is the wettest month in Mazatlán, with 228 mm. May is the driest, with 0 mm.
How many rainy days does Mazatlán have a year?
Mazatlán has about 39 days with measurable rain in an average year. August has the most, about 11.
What is the hottest month in Mazatlán?
August is the warmest month in Mazatlán, with an average high of 34°C.
What is the coldest month in Mazatlán?
January is the coldest month in Mazatlán, with an average low of 14°C.
What is the record high temperature in Mazatlán?
Within the available 1973–2026 station history, the record high at the Mazatlán station is 41°C, set on June 6, 2026. The record low is 3°C, on February 4, 2011.
What is the sunniest month in Mazatlán?
November is the sunniest month in Mazatlán, with estimated sunshine of 73% of daylight hours from ERA5 cloud cover. August is the cloudiest.
What is the best time to visit Mazatlán?
The most comfortable time to visit is typically January to February, when daytime highs sit near 26°C.
Climate for places near Mazatlán, Sinaloa
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