April weather forecast
San Blas, Mexico

April, the same as March, in San Blas, Mexico, is another tropical spring month, with an average temperature ranging between max 32.7°C (90.9°F) and min 16.8°C (62.2°F).

Temperature

In San Blas, April's average high-temperature stands at a still hot 32.7°C (90.9°F), closely related to the preceding month. San Blas encounters a significant temperature differential, with an average low-temperature of 16.8°C (62.2°F) during April nights.

Heat index

Throughout April, the heat index is appraised at a sweltering 38°C (100.4°F). Implement heightened safety measures - risk of heat exhaustion and heat cramps is increased. Prolonged activity may result in heatstroke.
Heat index data is primarily for areas with shade and subjected to light winds. Exposure to the direct sun could elevate the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', is the outcome of merging air's temperature and its humidity metrics. Elements such as metabolic variations, pregnancy, and physical exertion can influence one's weather perception. By being directly under the sun, it's possible for the felt temperature to increase by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. Young ones generally face higher dangers than adults since they sweat less. Along with their large skin surface area compared totheir small bodies and increased heat production from their activities, the risks are heightened.
The innate cooling system of the human body revolves around perspiration, with the evaporation of sweat being central to this process. A surge in relative humidity can disrupt the body's normal cooling function by slowing evaporation, hence reducing the rate at which the body cools and intensifying the perception of heat. As the body gains more heat than it can dissipate, there's a risk of increasing temperatures and resultant overheating.

Humidity

The months with the lowest humidity in San Blas are March and April, with an average relative humidity of 58%.

Rainfall

The only month without rainfall in San Blas, Mexico, is April.

Sea temperature

In April, the average sea temperature in San Blas, Mexico, is 24.9°C (76.8°F).
Note: Individual preferences to cold, influenced by conditions such as sunshine, wind, and surrounding temperature, play a part in the comfort of swimming in 24.9°C (76.8°F) waters. (As an aside, Olympic swimming standards dictate water temperatures from 25°C (77°F) to 28°C (82.4°F).)

Daylight

The average length of the day in April in San Blas, Mexico, is 12h and 40min.
On the first day of the month, sunrise is at 5:53 am and sunset at 6:16 pm. On the last day of April, sunrise is at 5:30 am and sunset at 6:26 pm MST.

Sunshine

In San Blas, the average sunshine in April is 11.7h.

UV index

The months with the lowest UV index in San Blas are January through April, August, November and December, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high threat to health from unprotected exposure to Sun's UV rays for average individuals.
Note: In April, a daily maximum UV index of 6 leads to the following instructions:
Avoid overexposure. Fair-skinned individuals can burn in under 20 minutes. Limit direct sun exposure especially between 10 a.m. and 4 p.m., when UV radiation is at its peak. However, keep in mind that shade structures may not provide full sun protection. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection. Take note! The UV strength of the Sun elevates when reflected off water and sand.