April weather forecast
San Sebastián Tlacolula, Mexico

April in San Sebastián Tlacolula, Mexico, is a fiery hot spring month, with an average temperature fluctuating between 35.3°C (95.5°F) and 21.1°C (70°F).

Temperature

The transition from March to April brings a subtle temperature rise, with average high-temperatures increasing from a tropical 30.8°C (87.4°F) to a sweltering 35.3°C (95.5°F). With a significant daily temperature differential, San Sebastián Tlacolula's nighttime temperature in April falls to an average of 21.1°C (70°F).

Heat index

In April, the heat index is appraised at a life-threatening hot 48°C (118.4°F). Stay wary: Heat exhaustion and heat cramps are possible. Heatstroke can ensue from extended effort.
Heat index's context suggests values are appropriate for shady areas and slight breezes. With direct sunlight, the heat index could increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', combines both the air temperature and the humidity level to give a perceived human temperature. The impact of temperature is individual, as people's perception of weather may change based on their body mass, height, and physical activity. Direct sunlight can potentially raise the heat index by 15 Fahrenheit (8 Celsius) degrees, so it's crucial to consider. Heat index values are highly important for children. Young children typically face greater hazards than adults because they do not sweat as much. Their larger skin surface in comparison to their little bodies and the high heat production from their active nature compounds their vulnerability.
The physiological way the human body responds to excessive heat is by inducing perspiration, using sweat evaporation as a cooling mechanism. Under high air temperature and high humidity (high heat index) conditions, the body's ability to perspire is compromised, increasing the sensation of heat. The body faces dehydration threats when its cooling efforts are outpaced by excessive heat gain.

Humidity

The average relative humidity in April is 64%.

Rainfall

In San Sebastián Tlacolula, in April, during 9.8 rainfall days, 27mm (1.06") of precipitation is typically accumulated. Throughout the year, there are 209 rainfall days, and 998mm (39.29") of precipitation is accumulated.

Daylight

The average length of the day in April is 12h and 33min.
On the first day of the month, sunrise is at 6:20 am and sunset at 6:40 pm. On the last day of April, sunrise is at 6:00 am and sunset at 6:47 pm CST.

Sunshine

In April, the average sunshine is 9.2h.

UV index

The months with the highest UV index in San Sebastián Tlacolula are March through August, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high health hazard from exposure to the Sun's UV rays for ordinary individuals.
Note: The maximum daily UV index, 7 in April, converts into the following recommendations:
Resist overexposure. Safeguarding from solar damage is indispensable. It's important to stay in the shade and limit exposure to the sun from 10 a.m. to 4 p.m., when UV radiation is most intense, although remember that shade structures may not provide full sun protection. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage.