June weather forecast
Galveston, TX

The heat continues to intensify as Galveston, Texas moves deeper into summer. Noticeably, the sea gets warmer, reaching a welcoming 83.9°F (28.8°C), making the water almost irresistible for swimming and diving. June is indeed a sunny and lively month, despite the humidity and rain which also begin to increase. As the days get hotter and sunnier, people are advised to mitigate against excessive UV radiation, which hits a yearly peak of 7. However, the winds slow down, inducing a calming effect overall.

Temperature

Galveston's weather in June presents a minor rise in the average high-temperature, moving from 79.3°F (26.3°C) in May to a still warm 84.7°F (29.3°C). Galveston experiences a steady nighttime temperature of 79.5°F (26.4°C) throughout the month of June.

Heat index

June's average heat index is calculated to be a very hot 95°F (35°C). Apply extra caution, heat cramps and heat exhaustion could happen. Heatstroke might occur with long-duration activity.
Records show heat index calculations are tailored for shaded regions and mild winds. The direct sunshine could escalate the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', is a metric representing the sensation of warmth when air temperature and moisture come together. The perception of temperature can be subjective, varying based on activity and individual heat sensitivity, influenced by factors like wind, attire, and metabolic variations. Given direct exposure to sunlight, one might experience a rise in the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. Children frequently underestimate the necessity to rest and hydrate. Thirst is a late sign of dehydration - thus, it is vital to stay hydrated, particularly during lengthy physical exercises.
To cool down, the human body relies on perspiration, a process where excessive heat is eliminated as sweat evaporates. 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. Excessive heat gain, when not shed effectively by the body, can result in increasing body temperatures and related hazards.

Humidity

In Galveston, the average relative humidity in June is 77%.

Rainfall

In Galveston, during June, the rain falls for 14.2 days and regularly aggregates up to 2.68" (68mm) of precipitation. Throughout the year, there are 161.9 rainfall days, and 24.33" (618mm) of precipitation is accumulated.

Snowfall

March through December are months without snowfall.

Ocean temperature

In June, the average ocean temperature is 83.8°F (28.8°C).
Note: A water temperature from 77°F (25°C) to 84.2°F (29°C) is considered very warm and enjoyable, allowing water activities to be pleasant for extended periods without irritation.

Daylight

The month with the longest days is June, with an average of 14h and 0min of daylight.
On the first day of the month, sunrise is at 6:19 am and sunset at 8:14 pm. On the last day of June, sunrise is at 6:23 am and sunset at 8:22 pm CDT.

Sunshine

In Galveston, the average sunshine in June is 10.8h.

UV index

The months with the highest UV index are May through September, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high threat to health from unsafe exposure to UV radiation for ordinary individuals.
Note: The maximum daily UV index of 7 in June interprets into the following recommendations:
Embrace precautions and observe sun safety norms. Evasion of sunburn is a necessity. The Sun's UV radiation is at its strongest between the hours of 10 a.m. and 4 p.m. Minimize direct exposure to the sun during this period. Employ a wide-brim hat for potent defense against up to 50% of UV rays. Take note! The UV strength of the Sun elevates when reflected off water and sand.