March weather forecastSan Blas, Mexico

Weather in March

March, the first month of the spring in San Blas, is a hot month, with an average temperature varying between 16.4°C (61.5°F) and 31.3°C (88.3°F).

Temperature

San Blas's average high-temperature in March is a tropical 31.3°C (88.3°F), indicating a subtle variation from February. A considerable shift from the daytime highs is observed during March nights, with an average low of 16.4°C (61.5°F).

Heat index

For March, the heat index is appraised at a fiery hot 35°C (95°F). Ensure heightened precautions, risk of heat cramps and heat exhaustion is significant. Sustained activity could provoke heatstroke.
For clarity, heat index numbers account for light winds and areas under shade. The heat index could experience an increase of 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is a calculation that merges air temperature and relative humidity to depict the sensation of warmth. Elements of metabolic variation, physical activity, and clothing contribute to the effect of temperature on an individual. 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 importance for children. Younglings are generally more in peril than adults due to their reduced perspiration. Coupled with a larger skin surface relative to their tiny bodies and greater heat production because of their activity, they become more at risk.
The body's inherent cooling system operates through perspiration, wherein evaporating sweat offsets excessive heat. During high air temperature and humidity (high heat index), the process of perspiration is hindered, intensifying the sensation of heat. When the heat gained surpasses the body's cooling capacity, temperatures rise, signaling potential health concerns.

Humidity

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

Rainfall

March is the last month it rains in San Blas. During 1.9 rainfall days, in March, San Blas aggregates 3mm (0.12") of precipitation. Throughout the year, there are 106.3 rainfall days, and 439mm (17.28") of precipitation is accumulated.

Sea temperature

In San Blas, the average seawater temperature in March is 23.6°C (74.5°F).
Note: Depending on a person's sensitivity to cold, with regards to sunshine, wind, and air temperature, a quick swim in 23.6°C (74.5°F) water may be enjoyable. (FYI: The official water temperature required for the Olympic swimming competition is 25°C (77°F) to 28°C (82.4°F).)

Daylight

In March, the average length of the day is 12h and 2min.
On the first day of the month, sunrise is at 6:20 am and sunset at 6:05 pm. On the last day of March, sunrise is at 5:54 am and sunset at 6:15 pm MST.

Sunshine

In March, the average sunshine in San Blas is 10.1h.

UV index

The months with the lowest UV index are January through April, August, November and December, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation for the ordinary person.
Note: The maximum daily UV index of 6 in March interprets into the following recommendations:
Undertake precautions and comply with sun safety standards. Protection from skin and eye injury is vital. 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. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation. Stay alert! Reflective properties of sand and water amplify the Sun's UV radiation.