May weather forecastAustin, TX
May
Weather in May
In May, Austin starts to usher in the summer, followed by a significant spike in temperature. Rainfall is at its peak this month, reaching a high of 3.78" (96mm). The relatively high showers along with an increase in temperature provide a unique humidity to the air. While the city receives more daylight, the cloud cover increased to 45%, blocking direct sun rays throughout some of the day. However, as the summer settles, the overall climate becomes more dry than it's in June.Temperature
Austin's transition into May sees a mild rise in the average high-temperature, edging from 77.2°F (25.1°C) in April to a still warm 83.8°F (28.8°C). In May, the average low-temperature is a comfortable 66°F (18.9°C).Heat index
The heat index in May is calculated to be a hot 91.4°F (33°C). Exercise special caution, heat exhaustion and heat cramps are probable. Prolonged activity may induce heatstroke.For clarity, heat index numbers account for light winds and areas under shade. The heat index values could be amplified by up to 15 Fahrenheit (8 Celsius) degrees in direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is the outcome of merging air's temperature and its humidity metrics. The influence of weather is personal, differing among individuals based on variations in body mass, stature, and the degree of physical exertion. Consider the sun's direct rays and their impact; they can potentially increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. Young children are more at risk than adults since they tend to sweat less. Moreover, their large skin surface in proportion to their small bodies and the high heat production due to their activities contribute to their vulnerability.
Humidity
The most humid month is May, with an average relative humidity of 75%.Rainfall
May is the month with the most rainfall. Rain falls for 16.2 days and accumulates 3.78" (96mm) of precipitation.Snowfall
March through December are months without snowfall.Daylight
In Austin, the average length of the day in May is 13h and 41min.On the first day of the month, sunrise is at 6:46 am and sunset at 8:09 pm. On the last day of May, sunrise is at 6:29 am and sunset at 8:27 pm CDT.
Sunshine
In May, the average sunshine is 8.2h.UV index
In May, the average daily maximum UV index is 6. A UV Index value of 6 to 7 symbolizes a high threat to health from unsafe exposure to UV radiation for average individuals.Note: The UV index of 6 during May translates into the following guidance:
Beware of overexposure. Fair-skinned individuals risk burning in less than 20 minutes. The Sun emits the most powerful UV radiation between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Austin, TX
- Average high temperature in May: 83.8°F
The warmest month (with the highest average high temperature) is August (96.4°F).
The month with the lowest average high temperature is January (59.4°F).
- Average low temperature in May: 66°F
The month with the highest average low temperature is August (75.4°F).
The coldest month (with the lowest average low temperature) is January (42.6°F).
Average pressure in May
Austin, TX
- Average pressure in May: 29.92"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in May
Austin, TX
- Average wind speed in May: 8.6mph
The windiest month (with the highest average wind speed) is March (9.2mph).
The calmest month (with the lowest average wind speed) is September (6.2mph).
Average humidity in May
Austin, TX
- Average humidity in May: 75%
The month with the highest relative humidity is May (75%).
The month with the lowest relative humidity is August (59%).
Average rainfall in May
Austin, TX
- Average rainfall in May: 3.78"
The wettest month (with the highest rainfall) is May (3.78").
The driest month (with the least rainfall) is February (0.91").
Average rainfall days in May
Austin, TX
- Average rainfall days in May: 16.2 days
The month with the highest number of rainy days is May (16.2 days).
The month with the least rainy days is January (8.2 days).
Average snowfall in May
Austin, TX
- Average snowfall in May: 0"
The month with the highest snowfall is January (0.4").
The months with the least snowfall are March, April, May, June, July, August, September, October, November and December (0").
Average snowfall days in May
Austin, TX
- Average snowfall days in May: 0 days
The months with the highest number of snowfall days are January and February (0.3 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October and December (0 days).
Average daylight in May /
Average sunshine in May
Austin, TX
- Average daylight in May: 13h and 42min
The month with the longest days is June (Average daylight: 14h and 6min).
The month with the shortest days is December (Average daylight: 10h and 12min).
- Average sunshine in May: 8h and 12min
The months with the most sunshine are July and August (Average sunshine: 10h and 18min).
The month with the least sunshine is December (Average sunshine: 5h and 18min).
Average sunshine days in May
Austin, TX
- Average sunshine days in May: 11.1 days
The month with the most sunshine days is January (20.5 days).
The month with the least sunshine days is May (11.1 days).
Average UV index in May
Austin, TX
- Average UV index in May: 6
The months with the highest UV index are June, July and August (UV index 7).
The month with the lowest UV index is December (UV index 3).
Average cloud cover in May
Austin, TX
- Average cloud cover in May: 45
The month with the most cloud cover is March (Cloud cover 46).
The month with the least cloud cover is August (Cloud cover 24).
Average visibility in May
Austin, 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).
