Contents
- Weather in May
- Frequently asked questions
- Average temperature in May
- Average pressure in May
- Average wind speed in May
- Average humidity in May
- Average rainfall in May
- Average rainfall days in May
- Average snowfall days in May
- Average daylight in May
- Average sunshine in May
- Average sunshine days in May
- Average UV index in May
- Average cloud cover in May
- Average visibility in May
Weather in May
Temperature
May's onset records a minor alteration in the average high-temperature to a still tropical 93.9°F (34.4°C) from April's 90.1°F (32.3°C). San Isidro experiences a mean low-temperature of 73°F (22.8°C) during May.Heat index
The heat index value during May is estimated at a blisteringly hot 111.2°F (44°C). Beware: Heat cramps and heat exhaustion are very likely. Heatstroke is imminent with prolonged activity.Note that heat index values are valued for light wind and location in the shade. Exposure to the direct sun could elevate the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', is the outcome of merging air's temperature and its humidity metrics. The individual's experience of temperature can be shaped by numerous aspects such as metabolic variations, physical exertion, and attire. Considering the impact of direct sunlight, it's possible for the heat index to surge by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to children. Kids often lack the knowledge about the necessity to take breaks and consume liquids. Thirst, as a late symptom of dehydration, necessitates the maintenance of hydration, particularly during enduring physical activities.
For the human body, perspiration is the go-to method to regulate temperature, using sweat's evaporation to dissipate warmth. 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. Overheating risks increase with rising body temperatures, especially if heat release isn't efficient.
Humidity
In San Isidro, the average relative humidity in May is 62%.Rainfall
In May, the rain falls for 9.3 days. Throughout May, 1.69" (43mm) of precipitation is accumulated. Throughout the year, there are 98.5 rainfall days, and 13.11" (333mm) of precipitation is accumulated.Snowfall
In San Isidro, snow does not fall in March through December.Daylight
In San Isidro, the average length of the day in May is 13h and 28min.On the first day of May, sunrise is at 6:54 am and sunset at 8:06 pm. On the last day of the month, sunrise is at 6:40 am and sunset at 8:22 pm CDT.
Sunshine
The average sunshine in May in San Isidro is 10h.UV index
In May, the average daily maximum UV index in San Isidro is 7. A UV Index reading of 6 to 7 represents a high threat to health from exposure to the Sun's UV rays for the average person.Note: The daily high UV index of 7 in May translates into this advice:
Embrace precautions and observe sun safety norms. Evasion of sunburn is a necessity. Between 10 a.m. and 4 p.m., the Sun's UV radiation is at its peak. Limit your exposure to direct sunlight during these hours. During bright days, sunglasses that offer UVA and UVB defense are recommended.
Frequently asked questions
How hot is it in San Isidro in May?
What is the average humidity in May in San Isidro?
How much does it rain in San Isidro in May?
When it does not snow in San Isidro?
How many hours of daylight does San Isidro have in May?
What time are sunrise and sunset in May in San Isidro?
How many hours of sunshine does San Isidro have in May?
What is the UV index reading in May in San Isidro?
Average temperature in May
San Isidro, TX
- Average high temperature in May: 93.9°F
The warmest month (with the highest average high temperature) is August (100°F).
The month with the lowest average high temperature is January (69.8°F).
- Average low temperature in May: 73°F
The month with the highest average low temperature is August (80.1°F).
The coldest month (with the lowest average low temperature) is January (52.7°F).
Average pressure in May
San Isidro, TX
- Average pressure in May: 29.87"Hg
The month with the highest atmospheric pressure is January (30.12"Hg).
The months with the lowest atmospheric pressure are May and June (29.87"Hg).
Average wind speed in May
San Isidro, TX
- Average wind speed in May: 13.5mph
The windiest month (with the highest average wind speed) is July (13.9mph).
The calmest month (with the lowest average wind speed) is December (9.2mph).
Average humidity in May
San Isidro, TX
- Average humidity in May: 62%
The month with the highest relative humidity is December (65%).
The month with the lowest relative humidity is August (53%).
Average rainfall in May
San Isidro, TX
- Average rainfall in May: 1.69"
The wettest month (with the highest rainfall) is September (2.56").
The driest month (with the least rainfall) is February (0.47").
Average rainfall days in May
San Isidro, TX
- Average rainfall days in May: 9.3 days
The month with the highest number of rainy days is September (15.3 days).
The month with the least rainy days is February (5.8 days).
Average snowfall days in May
San Isidro, TX
- Average snowfall days in May: 0 days
The months with the highest number of snowfall days are January and February (0.1 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October, November and December (0 days).
Average daylight in May /
Average sunshine in May
San Isidro, TX
- Average daylight in May: 13h and 3min
The month with the longest days is June (Average daylight: 13h and 48min).
The month with the shortest days is December (Average daylight: 10h and 30min).
- Average sunshine in May: 10h and 0min
The months with the most sunshine are June and July (Average sunshine: 11h and 18min).
The month with the least sunshine is December (Average sunshine: 5h and 48min).
Average sunshine days in May
San Isidro, TX
- Average sunshine days in May: 20.5 days
The months with the most sunshine days are July and August (22.6 days).
The month with the least sunshine days is September (12.9 days).
Average UV index in May
San Isidro, TX
- Average UV index in May: 7
The months with the highest UV index are July and August (UV index 8).
The month with the lowest UV index is December (UV index 4).
Average cloud cover in May
San Isidro, TX
- Average cloud cover in May: 30
The month with the most cloud cover is December (Cloud cover 36).
The month with the least cloud cover is August (Cloud cover 16).
Average visibility in May
San Isidro, TX
- Average visibility in May: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
San Isidro, Texas, USA
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