Climate and monthly weather forecastMazatlán, Mexico
Climate and monthly weather forecast
The climate of Mazatlán
Mazatlán, nestled on the Pacific coast of Mexico, is classified under the Köppen climate system as 'As', identified as a tropical savanna climate with a 'summer' dry season. This tropical environment shapes the weather pattern experienced throughout the year, variating from warm to hot temperatures, coupled with significant rainfall during certain months.With an average monthly high temperature ranging from 25.1°C (77.2°F) to 30.9°C (87.6°F), Mazatlán ensures warm weather year-round. The lowest average temperature hovers from 19.4°C (66.9°F) to 26.9°C (80.4°F), signifying moderately hot conditions even during cooler months. The city's relative humidity stays fairly consistent, oscillating between 60 and 77% throughout the year.
Rainfall in Mazatlán follows a distinctive pattern. Minimal precipitation occurs from March to May, with rainfall amounts below 3mm (0.12"). However, the scenario drastically changes from June to September when rainfall peaks, reaching an apex of 121mm (4.76") in August. The number of rainfall days also follows a similar pattern, with August having the highest number at 25.3 days.
The level of daylight, sunshine hours, and the UV index are all commonly high. On average, Mazatlán enjoys 10.7 to 13.6 hours of daylight, 7.3 to 11.8 hours of sunshine, and a UV index rating of 6 to 7 throughout the year. The calm wind speeds rounding from 10.5km/h (6.5mph) to 11.7km/h (7.3mph) and modest cloud cover varying between 10 and 33% reflect the city's tranquil tropical weather.
The best time to visit Mazatlán
Considering the climatic patterns, the best time to visit Mazatlán is from November to April. During these months, the city offers more pleasant temperatures varying between 20.3°C (68.5°F) to 26.8°C (80.2°F) and less rainfall, staying below 26mm (1.02") in any given month. The city is well-lit with an average of at least 11 hours of daylight, and sunshine hours ranging from 7.4 to 11.8 hours per day. With a modest UV index of 6 and excellent visibility of 10km (6.2mi), it is an ideal period for outdoor activities and sightseeing.The worst time to visit Mazatlán
The period from June to September is considered less favorable for a visit to Mazatlán mainly due to the high rainfall. August is particularly wet with an average rainfall of 121mm (4.76") spread over 25.3 days. On top of that, the city experiences its highest temperatures, peaking at 30.9°C (87.6°F) in August, and a high relative humidity level averaging 76%, making it considerably muggy.Spring weather in Mazatlán
In Mazatlán, Spring encompasses warmer temperatures as the city transitions from cooler to hotter months. Highs rise gradually from 25.1°C (77.2°F) in March to 28.6°C (83.5°F) by May, while lows inch up from 19.4°C (66.9°F) to 23.8°C (74.8°F) in the same period. The season offers a dry spell with only a trace of rainfall, changing from 2mm (0.08") in March to 3mm (0.12") in May. The daylight increases from 12 hours to 13.3 hours, whereas sunshine prevails from 9.6 to 11.8 hours daily on average.Summer weather in Mazatlán
Summer in Mazatlán is characterized by steep elevations in temperature and rainfall. The average high temperature soars from 29.7°C (85.5°F) in June to a peak of 30.9°C (87.6°F) by August. The wet season begins in earnest, with rainfall jumping from 36mm (1.42") in June to a substantial 116mm (4.57") in August. Daylight hours slightly fluctuate around 13.4 hours, while average daily sunshine hours remain steady at 11.2 hours.Autumn weather in Mazatlán
Autumn witnesses a gradual decrease in temperature and rainfall. By November, average high temperatures drop to 28.3°C (82.9°F), and precipitation decreases to 26mm (1.02"). The daylight hours and sunshine duration start to reduce, with the city receiving around 11 hours of daylight and 7.4 hours of sunshine by November.Winter weather in Mazatlán
Winter in Mazatlán brings enjoyable weather conditions. High temperatures decline from 25.5°C (77.9°F) in December to 25.1°C (77.2°F) by February, while low temperatures move between 20.3°C (68.5°F) and 19.4°C (66.9°F). Rainfall remains minimal, averaging 8mm (0.31") in December and February. Even in winter, Mazatlán benefits from generous daylight, receiving between 10.7 hours to 11.4 hours, along with 7.3 to 7.4 hours of sunshine per day.Weather in January
The year kicks off reasonably warm with an average high temperature of 25.3°C (77.5°F) and relatively nominal relative humidity at 60% in Mazatlán. Compared to the latter months, rainfall remains considerably low with 8mm (0.31") and 2.8 days of rainfall recorded. Weather in January »Weather in February
The weather in February continues from where January left off, with the disparity between the high and low temperatures remaining consistent. The shift of the weather conditions remain subtle and span across a range of 19.4°C (66.9°F) to 25.1°C (77.2°F). Weather in February »Weather in March
In contrast to the preceding months, March exhibits a gentle rise in both temperature and relative humidity. From an average low of 20.2°C (68.4°F) to a high of 25.9°C (78.6°F), the weather remains warm throughout. In Mazatlán's year-round calendar, March comes across as a dry month, making it suitable for various outdoor activities. Weather in March »Weather in April
April in Mazatlán kicks off the real warm weather with the temperature soaring to a notable high of 26.8°C (80.2°F), marking the onset of the peak season. Residents and travelers navigating the city will notice an increase in heat. Weather in April »Weather in May
May sees a further spike in temperatures, taking the merit of being one of the hottest months of the year in Mazatlán with an average high of around 28.6°C (83.5°F). The significant rise in sea temperature also signifies that beach activities can accommodate longer hours. Weather in May »Weather in June
The transition from May to June in Mazatlán, significantly shifts with a major jump in relative humidity to 70%. The tropical climate welcomes the rainy season with an increased rainfall, marking 36mm (1.42") over 14.1 days. However, what marks the arrival of June apart from the onset of the monsoon is the jump in sea temperatures. Weather in June »Weather in July
July is the month when the rainfall amplifies dramatically, resulting in 70mm (2.76") precipitation that lasts over 23.1 days. The temperature persists in the hot bracket, fluctuating between highs of 30.6°C (87.1°F) and lows of 26.9°C (80.4°F). Weather in July »Weather in August
August remains the wettest month for Mazatlán, logging an impressive 116mm (4.57") of rainfall over 25.3 days. By now, the residents are accustomed to the regular patter of rain on the rooftops. While the rain might steal a few hours of the sunshine in August, the warm sea temperature counterbalances it. Weather in August »Weather in September
For Mazatlán, September brings a slight relief from the heavy rainfall of August. But that does not mean the city's streets become dry - the city still records quite substantial downpours of 121mm (4.76") across 23.1 days. The decreased rainfall rejuvenates outdoor activities, drawing residents back to the streets and parks. Weather in September »Weather in October
After the peak in humidity in September, October marks the commencement of muggy, comfortable weather in Mazatlán with reduced rainfall spanning only 49mm (1.93") over 10.4 days. The decrease in cloud coverage from 31% in September, marks the arrival of more sunshine filled days. Weather in October »Weather in November
Come November, and the weather of Mazatlán gradually drifts towards dryness with an average rainfall of only 26mm (1.02") spread over 4.4 days. The lower precipitation levels mean more bright and sunny days facilitating a surge in outdoor activities among the citizens. Weather in November »Weather in December
Rounding off the year, December in Mazatlán witnesses a decline in temperature and rainfall levels to 25.5°C (77.9°F) and 11mm (0.43") over 3.7 days, thus resuming the initial January-based weather trend. The city displays a steady consistency in its weather conditions throughout the year with warm and sunny days characterizing the months. Weather in December »Updated: Feb 9, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
January and March, with an average relative humidity of 60%, are the least humid months in Mazatlán, Mexico.
Throughout the year, in Mazatlán, there are 113.9 rainfall days, and 454mm (17.87") of precipitation is accumulated.
The month with the least sunshine in Mazatlán is January, with an average of 7.3h of sunshine.
January through April, November and December, with an average maximum UV index of 6, are months with the lowest UV index.
The month of February, characterized by an average high of 25.1°C (77.2°F) and a low of 19.4°C (66.9°F), is recognized as the coldest.
With an average sea temperature of 21.6°C (70.9°F), February is the month with the coldest seawater in Mazatlán, Mexico.
The only month without rainfall is April.
Months with rainfall in Mazatlán are January through March, May through December.
The month with the most sunshine in Mazatlán is May, with an average of 11.8h of sunshine.
The months with the highest UV index in Mazatlán, Mexico, are May through October, with an average maximum UV index of 7.
With an average of 13h and 30min of daylight, June has the longest days of the year.
Mazatlán's warmest month, August, registers temperatures that range from a high of 30.9°C (87.6°F) to a low of 26.9°C (80.4°F).
August is the month with the warmest seawater in Mazatlán, with an average sea temperature of 30.6°C (87.1°F).
September is the most humid month in Mazatlán, Mexico, with an average relative humidity of 77%.
The month with the most rainfall is September, when the rain falls for 23.1 days and typically aggregates up to 121mm (4.76") of precipitation.
The month with the shortest days in Mazatlán is December, with an average of 10h and 42min of daylight.
Mazatlán does not observe Daylight Saving Time (DST). MST timezone is used throughout the entire year.
Average temperature
Mazatlán, Mexico
The warmest month (with the highest average high temperature) is August (30.9°C).
The month with the lowest average high temperature is February (25.1°C).
The months with the highest average low temperature are July and August (26.9°C).
The coldest months (with the lowest average low temperature) are January and February (19.4°C).
Average pressure
Mazatlán, Mexico
- Average pressure in January:
1015.4mbar - Average pressure in February:
1014.7mbar - Average pressure in March:
1014.2mbar - Average pressure in April:
1013.2mbar - Average pressure in May:
1012.2mbar - Average pressure in June:
1011.5mbar
- Average pressure in July:
1012.8mbar - Average pressure in August:
1012mbar - Average pressure in September:
1011.2mbar - Average pressure in October:
1011.7mbar - Average pressure in November:
1013.6mbar - Average pressure in December:
1014.8mbar
The month with the highest atmospheric pressure is January (1015.4mbar).
The month with the lowest atmospheric pressure is September (1011.2mbar).
Average wind speed
Mazatlán, Mexico
- Average wind speed in January:
11.2km/h - Average wind speed in February:
11.7km/h - Average wind speed in March:
11.4km/h - Average wind speed in April:
10.9km/h - Average wind speed in May:
11.4km/h - Average wind speed in June:
11.4km/h
- Average wind speed in July:
10.5km/h - Average wind speed in August:
10.6km/h - Average wind speed in September:
11km/h - Average wind speed in October:
11km/h - Average wind speed in November:
10.8km/h - Average wind speed in December:
10.9km/h
The windiest month (with the highest average wind speed) is February (11.7km/h).
The calmest month (with the lowest average wind speed) is July (10.5km/h).
Average humidity
Mazatlán, Mexico
The month with the highest relative humidity is September (77%).
The months with the lowest relative humidity are January and March (60%).
Average rainfall
Mazatlán, Mexico
The wettest month (with the highest rainfall) is September (121mm).
The driest month (with the least rainfall) is April (0mm).
Average rainfall days
Mazatlán, Mexico
- Average rainfall days in January:
2.8 days - Average rainfall days in February:
3 days - Average rainfall days in March:
1.7 days - Average rainfall days in April:
0.6 days - Average rainfall days in May:
1.7 days - Average rainfall days in June:
14.1 days
- Average rainfall days in July:
23.1 days - Average rainfall days in August:
25.3 days - Average rainfall days in September:
23.1 days - Average rainfall days in October:
10.4 days - Average rainfall days in November:
4.4 days - Average rainfall days in December:
3.7 days
The month with the highest number of rainy days is August (25.3 days).
The month with the least rainy days is April (0.6 days).
Average sea temperature
Mazatlán, Mexico
The best month for swimming (with the highest average sea temperature) is August (30.6°C).
The coldest month (with the lowest average sea temperature) is February (21.6°C).
Average daylight / Average sunshine
Mazatlán, Mexico
- Average daylight in January:
10h and 54min - Average daylight in February:
11h and 24min - Average daylight in March:
12h and 0min - Average daylight in April:
12h and 42min - Average daylight in May:
13h and 18min - Average daylight in June:
13h and 30min
- Average daylight in July:
13h and 24min - Average daylight in August:
12h and 54min - Average daylight in September:
12h and 18min - Average daylight in October:
11h and 36min - Average daylight in November:
11h and 0min - Average daylight in December:
10h and 42min
The month with the longest days is June (Average daylight: 13h and 30min).
The month with the shortest days is December (Average daylight: 10h and 42min).
- Average sunshine in January:
7h and 18min - Average sunshine in February:
8h and 30min - Average sunshine in March:
9h and 36min - Average sunshine in April:
11h and 36min - Average sunshine in May:
11h and 48min - Average sunshine in June:
11h and 36min
- Average sunshine in July:
11h and 12min - Average sunshine in August:
11h and 12min - Average sunshine in September:
10h and 42min - Average sunshine in October:
7h and 48min - Average sunshine in November:
7h and 24min - Average sunshine in December:
7h and 24min
The month with the most sunshine is May (Average sunshine: 11h and 48min).
The month with the least sunshine is January (Average sunshine: 7h and 18min).
Average sunshine days
Mazatlán, Mexico
- Average sunshine days in January:
26.5 days - Average sunshine days in February:
25 days - Average sunshine days in March:
28.5 days - Average sunshine days in April:
29.3 days - Average sunshine days in May:
28.4 days - Average sunshine days in June:
11.8 days
- Average sunshine days in July:
3.3 days - Average sunshine days in August:
1.9 days - Average sunshine days in September:
2.8 days - Average sunshine days in October:
17.8 days - Average sunshine days in November:
24.5 days - Average sunshine days in December:
26.4 days
The month with the most sunshine days is April (29.3 days).
The month with the least sunshine days is August (1.9 days).
Average UV index
Mazatlán, Mexico
The months with the highest UV index are May, June, July, August, September and October (UV index 7).
The months with the lowest UV index are January, February, March, April, November and December (UV index 6).
Average cloud cover
Mazatlán, Mexico
The month with the most cloud cover is August (Cloud cover 33).
The month with the least cloud cover is May (Cloud cover 10).
Average visibility
Mazatlán, Mexico
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
