July weather forecast
Galveston, TX

As the peak of summer, July experiences the highest temperatures all year. The sultry days, hinted by the sea temperature climaxing at 86.1°F (30.1°C), are balanced out by a breeze blowing at a cozy 9.8mph (15.8km/h). July is not only the warmest but also sees some of the highest rainfall levels peaking at an average of 3.19" (81mm). Despite the occasional weather extremes, July remains a favored time for sun-soaked activities, thanks to the persistent sunshine and relatively low cloud cover.

Temperature

As July takes its course, Galveston's average high-temperature registers at a hot 86.4°F (30.2°C), closely aligning with the preceding month. In July, Galveston's nighttime temperatures demonstrate a slight decrease, stabilizing at an average of 81.7°F (27.6°C).

Heat index

In July, the heat index is calculated to be a sweltering 98.6°F (37°C). More protective measures are required - heat exhaustion and heat cramps are likely. Heatstroke may follow lengthy activity.
It is important to note that the heat index values are for shaded areas and light wind scenarios. The heat index could experience an increase of 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is a measure of how hot it feels when the actual air humidity is factored in. Factors including metabolic differences, physical activity, and clothing are additional elements that influence the individual's temperature experience. Being under direct sunshine can magnify the heat experience, possibly pushing up the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Juveniles are regularly less conscious of the need to recuperate and rehydrate. Thirst is a tardy symptom of dehydration - hydration, especially during lengthy physical activities, should be maintained.
To achieve cooling, the human body employs perspiration, relying on the subsequent evaporation of sweat. An increase in relative humidity disrupts body cooling by slowing the evaporation rate, thereby reducing the rate at which the body cools and amplifying the sense of heat. Potential thermal conditions emerge as the body's heat gain outpaces its cooling mechanisms.

Humidity

In Galveston, the average relative humidity in July is 76%.

Rainfall

In Galveston, in July, it is raining for 18.3 days, with typically 3.19" (81mm) of accumulated precipitation. In Galveston, during the entire year, the rain falls for 161.9 days and collects up to 24.33" (618mm) of precipitation.

Snowfall

In Galveston, Texas, snow does not fall in March through December.

Ocean temperature

In Galveston, the average seawater temperature in July is 86°F (30°C).
Note: When the water's temperature hits more than 86°F (30°C), it arguably becomes less enjoyable for cooling down.

Daylight

In July, the average length of the day is 13h and 49min.
On the first day of July, sunrise is at 6:23 am and sunset at 8:22 pm. On the last day of the month, sunrise is at 6:39 am and sunset at 8:11 pm CDT.

Sunshine

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

UV index

May through September, with an average maximum UV index of 7, are months with the highest UV index in Galveston. A UV Index value of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV rays for ordinary individuals.
Note: The UV index of 7 during July translates into the following guidance:
Avoid overexposure. Fair-skinned individuals can burn in under 20 minutes. To the best of your ability, limit your exposure to the sun between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays. Stay alert! Reflective properties of sand and water amplify the Sun's UV radiation.