June weather forecast
Port Isabel, TX

June, the first month of the summer in Port Isabel, is still a warm month, with an average temperature varying between 85.8°F (29.9°C) and 80.1°F (26.7°C).

Temperature

Port Isabel marks the arrival of June with an average high-temperature of a still moderately hot 85.8°F (29.9°C), hardly different from May's 81.9°F (27.7°C). During June, Port Isabel's nighttime temperatures demonstrate a subtle cooling from daytime highs, stabilizing at a still warm 80.1°F (26.7°C).

Heat index

June's heat index is evaluated at a very hot 98.6°F (37°C). Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.
Data suggests that the heat index is set for environments in shade and with a light wind. With exposure to direct sunshine, the heat index could climb by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', is achieved by amalgamating air temperature with the relative humidity readings. The individual's experience of temperature can be shaped by numerous aspects such as metabolic variations, physical exertion, and attire. In direct sunlight, the heat's impact can be heightened, potentially leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are primarily vital for children. 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.
As a reaction to high temperatures, the human body begins to perspire, using the evaporation of sweat to lower its temperature. With excessive moisture in the atmosphere, the effectiveness of the evaporation process is decreased, causing the body to cool down less efficiently, leading to a sensation of overheating. Potential thermal conditions emerge as the body's heat gain outpaces its cooling mechanisms.

Humidity

The average relative humidity in June is 78%.

Rainfall

In Port Isabel, in June, during 13.3 rainfall days, 2.24" (57mm) of precipitation is typically accumulated. Throughout the year, there are 143.2 rainfall days, and 21.38" (543mm) of precipitation is accumulated.

Ocean temperature

In Port Isabel, the average seawater temperature in June is 82.9°F (28.3°C).
Note: For swimming, diving, and other water activities, temperatures between 77°F (25°C) and 84.2°F (29°C) are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable.

Daylight

The month with the longest days is June, with an average of 13h and 42min of daylight.
On the first day of June, sunrise is at 6:36 am and sunset at 8:17 pm. On the last day of the month, sunrise is at 6:40 am and sunset at 8:25 pm CDT.

Sunshine

In Port Isabel, Texas, the average sunshine in June is 11.1h.

UV index

April through September, with an average maximum UV index of 7, are months with the highest UV index. A UV Index of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to Sun's UV rays for the average person.
Note: The daily maximum UV index of 7 in June interprets into the following advice:
Undertake protective measures and comply with sun safety rules. Shielding against skin and eye damage is essential. The Sun emits the most powerful UV radiation between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. Employ a hat with a wide brim for robust protection, cutting UV exposure by half. Caution! The Sun's UV intensity grows with reflections off sand and water.