May weather forecast
Brownsville, TX

With the advent of May in Brownsville, the city starts experiencing true summer vibes. The increase in daylight pairs well with the rising temperatures, resulting in longer, brighter days. The tropic warmth elevates the temperatures to peak at 86.5°F (30.3°C), signalling the onset of the hot season. The sunshine hours reach a high, making this a great time for outdoor activities. A dip in wind speed and the least cloud coverage of the year underscore the sunny glory of May.

Temperature

The arrival of May in Brownsville brings an average high-temperature of a tropical 86.5°F (30.3°C), subtly diverging from April's 82.9°F (28.3°C). In Brownsville, the average nighttime temperature during May is a moderately hot 74.8°F (23.8°C).

Heat index

The heat index value for May is estimated at a sweltering 98.6°F (37°C). More protective measures are required - heat exhaustion and heat cramps are likely. Heatstroke may follow lengthy activity.
Heat index's context suggests values are appropriate for shady areas and slight breezes. If exposed to direct sunlight, the heat index could climb by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', measures the perceived warmth when incorporating the humidity present in the air. A person's impression of weather can be affected by numerous aspects, among them metabolic variations, pregnancy, and activity levels. Exposure to direct sun rays can influence the heat you feel, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely vital to babies and toddlers. Young ones are generally more prone to risk than adults due to their reduced ability to sweat. Their large skin surface area relative to their diminutive bodies and elevated heat production from their activities further enhance this risk.
Perspiration is essential for the human body; it facilitates cooling through the process of sweat evaporation. Under high air temperature and humidity (high heat index) conditions, perspiration is limited, and the perception of heat is increased. When body temperature rises due to an imbalance in heat gain, there's a potential for dehydration and overheating.

Humidity

February, May and December, with an average relative humidity of 74%, are the most humid months.

Rainfall

In May, the rain falls for 8.8 days. Throughout May, 0.87" (22mm) of precipitation is accumulated. In Brownsville, during the entire year, the rain falls for 114 days and collects up to 11.22" (285mm) of precipitation.

Daylight

The average length of the day in May in Brownsville is 13h and 25min.
On the first day of the month, sunrise is at 6:52 am and sunset at 8:01 pm. On the last day of May, sunrise is at 6:38 am and sunset at 8:17 pm CDT.

Sunshine

In May, the average sunshine is 10.4h.

UV index

In Brownsville, the average daily maximum UV index in May is 7. A UV Index value of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV rays for ordinary individuals.
Note: In May, the maximum UV index of 7 suggests this advice:
Stay clear of intense sun exposure. Solar protection is of utmost significance. Between 10 a.m. and 4 p.m., UV radiation is strongest. Make an effort to avoid direct sunlight during this time, remembering that shade structures may not provide full sun protection. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes.