May weather forecast
Santa Maria, TX

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Weather in May

The last month of the spring, May, is another hot month in Santa Maria, Texas, with an average temperature varying between 90.9°F (32.7°C) and 72.9°F (22.7°C).

Temperature

Santa Maria experiences a minor change to a still tropical 90.9°F (32.7°C) in average high-temperature during May, closely reflecting April. Nighttime temperatures in May average to an agreeable 72.9°F (22.7°C) in Santa Maria, Texas.

Heat index

The heat index for May is estimated at a blisteringly hot 109.4°F (43°C). Notice: Heat cramps and heat exhaustion are likely. Continued strenuous activity might lead to heatstroke.
Heat index values are typically calculated for conditions of shade and a light breeze. Heat index values have the potential to be boosted by 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'real feel', is found by incorporating humidity levels into the air temperature measurement. The perception of temperature can be subjective, varying based on activity and individual heat sensitivity, influenced by factors like wind, attire, and metabolic variations. One should be aware that direct sunshine can amplify the perceived temperature, raising the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. In general, children are more at risk than adults because they sweat less. Furthermore, the large skin surface compared to their small bodies and the high heat production due to their actions contribute to this vulnerability.
The physiological response of the human body to excess warmth is to perspire, thereby cooling itself through sweat evaporation. When the level of relative humidity is elevated, evaporation diminishes, causing more warmth to be retained in the body than in dry air. As body temperatures escalate without effective heat release, one might face dehydration threats.

Humidity

May is the most humid month, with an average relative humidity of 71%.

Rainfall

In May, the rain falls for 8.5 days. Throughout May, 1.38" (35mm) of precipitation is accumulated. In Santa Maria, during the entire year, the rain falls for 102.8 days and collects up to 12.99" (330mm) of precipitation.

Snowfall

February through December are months without snowfall.

Daylight

In Santa Maria, the average length of the day in May is 13h and 26min.
On the first day of the month, sunrise is at 6:53 am and sunset at 8:03 pm. On the last day of May, sunrise is at 6:39 am and sunset at 8:19 pm CDT.

Sunshine

The average sunshine in May is 9.6h.

UV index

In May, the average daily maximum UV index in Santa Maria, Texas, is 7. A UV Index estimate of 6 to 7 represents a high health risk from unprotected exposure to Sun's UV rays for the ordinary person.
Note: In May, the UV index of 7 transforms into the following advice:
Endorse precautions and be consistent with sun safety guidelines. Preventing sunburn is paramount. Limit direct sun exposure especially between 10 a.m. and 4 p.m., when UV radiation is at its peak. However, keep in mind that shade structures may not provide full sun protection. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation.
Updated: Jun 23, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot does it get in May?

The average high-temperature, in May, in Santa Maria, is 90.9°F (32.7°C), while the average low-temperature is 72.9°F (22.7°C). The average heat index (a.k.a. 'real feel', 'apparent temperature'), which factors the actual air temperature with the relative humidity, in May is estimated at 109.4°F (43°C).

What is the most humid month?

May is the most humid month in Santa Maria, with an average relative humidity of 71%.

What is the average humidity in May?

In Santa Maria, Texas, the average relative humidity in May is 71%.

How much does it rain in May?

In Santa Maria, in May, it is raining for 8.5 days, with typically 1.38" (35mm) of accumulated precipitation.

When it does not snow?

In Santa Maria, snow does not fall in February through December.

How many hours of daylight does Santa Maria have in May?

The average day length in May is 13h and 26min.

What time are sunrise and sunset in May?

In May, on the first day of the month, sunrise is at 6:53 am and sunset at 8:03 pm. On the last day of the month, sunrise is at 6:39 am and sunset at 8:19 pm CDT.

How long on average sun shines in May?

The average sunshine duration in May is 9.6h.

How high is the UV index in May?

In Santa Maria, the average daily maximum UV index in May is 7. A UV Index of 6 to 7 symbolizes a high health risk from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
Santa Maria, TX

Average temperature in May - Santa Maria, TX
  • Average high temperature in May: 90.9°F

The warmest month (with the highest average high temperature) is August (97.9°F).
The month with the lowest average high temperature is January (69.6°F).

  • Average low temperature in May: 72.9°F

The month with the highest average low temperature is August (79.3°F).
The coldest month (with the lowest average low temperature) is January (54.1°F).

Average pressure in May
Santa Maria, TX

Average pressure in May - Santa Maria, 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
Santa Maria, TX

Average wind speed in May - Santa Maria, TX
  • Average wind speed in May: 11.7mph

The windiest months (with the highest average wind speed) are March, April and May (11.7mph).
The calmest month (with the lowest average wind speed) is September (8.5mph).

Average humidity in May
Santa Maria, TX

Average humidity in May - Santa Maria, TX
  • Average humidity in May: 71%

The month with the highest relative humidity is May (71%).
The month with the lowest relative humidity is August (61%).

Average rainfall in May
Santa Maria, TX

Average rainfall in May - Santa Maria, TX
  • Average rainfall in May: 1.38"

The wettest months (with the highest rainfall) are July and September (2.01").
The driest month (with the least rainfall) is February (0.43").

Average rainfall days in May
Santa Maria, TX

Average rainfall days in May - Santa Maria, TX
  • Average rainfall days in May: 8.5 days

The month with the highest number of rainy days is September (14.4 days).
The month with the least rainy days is July (6.4 days).

Average snowfall in May
Santa Maria, TX

Average snowfall in May - Santa Maria, TX
  • Average snowfall in May: 0"

The month with the highest snowfall is January (0.12").
The months with the least snowfall are February, March, April, May, June, July, August, September, October, November and December (0").

Average snowfall days in May
Santa Maria, TX

Average snowfall days in May - Santa Maria, TX
  • Average snowfall days in May: 0 days

The month with the highest number of snowfall days is January (0.1 days).
The months with the least snowfall days are February, March, April, May, June, July, August, September, October, November and December (0 days).

Average daylight in May /
Average sunshine in May
Santa Maria, TX

Average daylight in May / Average sunshine in May - Santa Maria, TX
  • Average daylight in May: 13h and 2min

The month with the longest days is June (Average daylight: 13h and 42min).
The month with the shortest days is December (Average daylight: 10h and 30min).

  • Average sunshine in May: 9h and 4min

The month with the most sunshine is July (Average sunshine: 11h and 6min).
The month with the least sunshine is December (Average sunshine: 5h and 12min).

Average sunshine days in May
Santa Maria, TX

Average sunshine days in May - Santa Maria, TX
  • Average sunshine days in May: 20.4 days

The month with the most sunshine days is July (23.8 days).
The month with the least sunshine days is September (13.8 days).

Average UV index in May
Santa Maria, TX

Average UV index in May - Santa Maria, 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
Santa Maria, TX

Average cloud cover in May - Santa Maria, TX
  • Average cloud cover in May: 35

The month with the most cloud cover is December (Cloud cover 43).
The month with the least cloud cover is August (Cloud cover 20).

Average visibility in May
Santa Maria, TX

Average visibility in May - Santa Maria, 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).

Santa Maria, Texas, USA

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