July weather forecast
Guaymas, Mexico

July, the same as June, in Guaymas, Mexico, is another tropical summer month, with an average temperature varying between 33.1°C (91.6°F) and 28.9°C (84°F).

Temperature

With the advent of July, Guaymas's high-temperatures adjust to a still hot 33.1°C (91.6°F), closely aligning with the preceding month. July nights in Guaymas witness a mild cool down to an average low of 28.9°C (84°F).

Heat index

The heat index in July is appraised at a very hot 39°C (102.2°F). Adopt special protective actions against heat exhaustion and heat cramps. Long-duration activity risks heatstroke.
Metrics for the heat index primarily focus on shaded spots and light wind conditions. A rise of up to 15 Fahrenheit (8 Celsius) degrees in the heat index could result from direct sunlight.
Note: The heat index, also known as 'feels like' or 'felt air temperature', ties air temperature with relative humidity to produce the perceived temperature sensation. Depending on the activity and the individual's heat perception, which may vary due to factors including wind, clothing, and metabolic variations, this effect remains subjective. In direct sunlight, the heat's impact can be heightened, potentially leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. Young individuals are typically more threatened than adults due to their reduced perspiration. Also, the larger skin surface proportionate to their small bodies and the increased heat from their activities magnify their risk.
The human body normally cools itself by perspiration, as evaporated sweat carries heat away from the body. With higher relative humidity, the rate of evaporation is reduced, resulting in increased heat retention in the body compared to drier air. When heat gain surpasses the level the body can shed, body temperature begins to increase, and consequently, overheating and dehydration can occur, with varying severity.

Humidity

The average relative humidity in July in Guaymas is 59%.

Rainfall

In Guaymas, Mexico, in July, during 14.8 rainfall days, 30mm (1.18") of precipitation is typically accumulated. Throughout the year, there are 56 rainfall days, and 164mm (6.46") of precipitation is accumulated.

Sea temperature

In July, the average sea temperature is 30.1°C (86.2°F).
Note: The ideal feeling of cooling down in water can be lost when the temperature surpasses 30°C (86°F).

Daylight

The average length of the day in July in Guaymas is 13h and 43min.
On the first day of the month, sunrise is at 5:31 am and sunset at 7:24 pm. On the last day of July, in Guaymas, sunrise is at 5:46 am and sunset at 7:13 pm MST.

Sunshine

In Guaymas, Mexico, the average sunshine in July is 11.9h.

UV index

June through September, with an average maximum UV index of 8, are months with the highest UV index. A UV Index of 8 to 10 symbolizes a very high threat to health from exposure to the Sun's UV radiation for ordinary individuals.
Note: The daily high UV index of 8 during July translates into the following recommendations:
Always be careful, as unprotected skin and eyes might burn in no time. The Sun emits the most powerful UV radiation between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses. Be wary! Reflections from sand and water make UV radiation more intense.