October weather forecast
Mazatlán, Mexico

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. October's daily hours of daylight fall into steady degradation, yet ample sunshine persists. This month holds promise for those looking to explore the area's outdoor attractions at a leisurely pace. As October rolls on, the lingering monsoon slowly retreats, paving the way for comfortable weather.

Temperature

Upon the onset of October, Mazatlán witnesses an average high-temperature of a still tropical 30°C (86°F), showing a close resemblance to the prior month. Mazatlán encounters a small divergence from daytime high temperatures, averaging a low-temperature of 25.5°C (77.9°F) during October nights.

Heat index

The heat index for October is appraised at a torrid 36°C (96.8°F). Implement heightened safety measures - risk of heat exhaustion and heat cramps is increased. Prolonged activity may result in heatstroke.
Heat index evaluations are typically in the context of light winds and shaded environments. Heat index values may surge by up to 15 Fahrenheit (8 Celsius) degrees in the presence of direct sunlight.
Note: The heat index, also known as 'feels like' or 'real feel', quantifies the warmth felt when relative humidity is considered. The impact of weather is individual, with diverse individuals experiencing it differently due to variations in body mass, height, and activity levels. Consider that direct sun exposure can intensify the felt heat, adding potentially 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are extremely significant for children. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it's vital to remain hydrated, particularly during prolonged physical activities.
The body's inherent cooling system operates through perspiration, wherein evaporating sweat offsets excessive heat. An upsurge in relative humidity affects normal body cooling mechanisms by slowing evaporation, hence reducing the rate at which the body cools and intensifying the perception of heat. Overheating dangers loom when the body's heat release mechanisms are overshadowed by excessive gain.

Humidity

The average relative humidity in October is 72%.

Rainfall

In Mazatlán, in October, during 10.4 rainfall days, 49mm (1.93") of precipitation is typically accumulated. Throughout the year, there are 113.9 rainfall days, and 454mm (17.87") of precipitation is accumulated.

Sea temperature

In Mazatlán, the average seawater temperature in October is 29.8°C (85.6°F).
Note: For any water activity, surface water temperatures between 25°C (77°F) and 29°C (84.2°F) are considered as excellent and extremely pleasant for lengthened periods.

Daylight

The average length of the day in October in Mazatlán is 11h and 36min.
On the first day of October, sunrise is at 5:57 am and sunset at 5:52 pm. On the last day of the month, sunrise is at 6:10 am and sunset at 5:27 pm MST.

Sunshine

The average sunshine in October is 7.8h.

UV index

May through October, with an average maximum UV index of 7, are months with the highest UV index. A UV Index value of 6 to 7 symbolizes a high health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The maximum daily UV index, 7 in October, converts into the following recommendations:
Take precautions against overexposure. Protection against sun damage is needed. Avoid direct Sun exposure and seek shade between 10 a.m. and 4 p.m., when UV radiation is at its peak, but keep in mind that not all shade structures provide complete protection. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat. Attention! UV radiation is markedly stronger with water and sand reflections.