August weather forecast
San Blas, Mexico

The last month of the summer, August, is another hot month in San Blas, Mexico, with temperature in the range of an average high of 33.2°C (91.8°F) and an average low of 24.3°C (75.7°F).

Temperature

San Blas marks the start of August with an average high-temperature of a still hot 33.2°C (91.8°F), hinting at a slight fluctuation from July's 33.6°C (92.5°F). During August, San Blas's temperature averages to a moderately hot 24.3°C (75.7°F) at night.

Heat index

During August, the heat index is appraised at a blazing hot 47°C (116.6°F). Note: Heat exhaustion and heat cramps are probable. Heatstroke can follow with prolonged activity.
For clarity, heat index numbers account for light winds and areas under shade. Facing direct sunlight may hike up the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. This effect is subjective, differing among individuals based on their physical activity and perception of heat, which can be influenced by factors like wind, clothing, and metabolic variances. Consider the fact that direct sun exposure can influence how hot one feels, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. Young ones often underestimate the need for rest and rehydration. Thirst appears late in dehydration - hence, it is important to keep hydrated, particularly during prolonged physical activities.
The innate cooling system of the human body revolves around perspiration, with the evaporation of sweat being central to this process. In conditions of both high temperature and humidity (a high heat index), sweating is limited and the perception of heat is enhanced. Rising body temperatures resulting from an imbalance in heat absorption can lead to potential thermal issues.

Humidity

In August, the average relative humidity is 77%.

Rainfall

The month with the most rainfall is August, when the rain falls for 22 days and typically aggregates up to 117mm (4.61") of precipitation.

Sea temperature

The month with the warmest seawater in San Blas, Mexico, is August, with an average sea temperature of 30.7°C (87.3°F).
Note: Temperatures exceeding 30°C (86°F) can compromise the refreshing quality of water activities.

Daylight

In San Blas, the average length of the day in August is 12h and 51min.
On the first day of August, sunrise is at 5:34 am and sunset at 6:40 pm. On the last day of the month, sunrise is at 5:44 am and sunset at 6:18 pm MST.

Sunshine

In San Blas, the average sunshine in August is 10.4h.

UV index

January through April, August, November and December, with an average maximum UV index of 6, are months with the lowest UV index. A UV Index estimate of 6 to 7 represents a high threat to health from unsafe exposure to UV radiation for ordinary individuals.
Note: A maximum high UV index of 6 in August translates into the following recommendations:
Steer clear of overexposure. Fair-skinned individuals can be scorched in less than 20 minutes. Limit your exposure to the sun's UV radiation, which is strongest between 10 a.m. and 4 p.m., and note that parasols or canopies may not provide full sun protection. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses. Attention! UV strength is notably upped by the reflection of sand and water.