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 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 arrival sees a mild rise in the average high-temperature, transitioning from April's moderately hot 79.5°F (26.4°C) to a still warm 85.5°F (29.7°C). Castroville records a steady low-temperature average of 65.8°F (18.8°C) during May.Heat index
May's average heat index is computed to be a fiery hot 95°F (35°C). Apply extra caution, heat cramps and heat exhaustion could happen. Heatstroke might occur with long-duration activity.When referencing the heat index, its values are suitable for shady environments and light breezes. A rise in the heat index by 15 Fahrenheit (8 Celsius) degrees may result from direct sunlight exposure.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is a metric representing the sensation of warmth when air temperature and moisture come together. This effect is personal, influenced by the individual's physical activity and heat sensitivity, shaped by factors including wind, attire, and metabolic variations. Direct sunlight can potentially raise the heat index by 15 Fahrenheit (8 Celsius) degrees, so it's crucial to consider. Heat index values are largely significant for babies and toddlers. Children typically face more danger than adults as their sweat production is usually lower. Additionally, the bigger skin surface compared to their small size and the increased heat due to their activeness exacerbate the risk.
The body's self-cooling mechanism is rooted in perspiration, where evaporating sweat cools down excessive warmth. With higher relative humidity, the rate of evaporation is reduced, resulting in increased heat retention in the body compared to drier air. When heat surpasses the body's release mechanisms, dehydration and overheating risks become pronounced.
Humidity
May is the most humid month, with an average relative humidity of 73%.Rainfall
The month with the most rainfall is May, when the rain falls for 16.7 days and typically aggregates up to 2.99" (76mm) of precipitation.Snowfall
March through December are months without snowfall.Daylight
The average length of the day in May is 13h and 38min.On the first day of May, sunrise is at 6:52 am and sunset at 8:12 pm. On the last day of the month, sunrise is at 6:36 am and sunset at 8:30 pm CDT.
Sunshine
The average sunshine in May is 7.7h.UV index
In Castroville, the average daily maximum UV index in May is 6. A UV Index value of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV radiation for ordinary individuals.Note: The average daily UV index of 6 in May transforms into the following instructions:
Use measures and accept sun safety conventions. Guarding against skin and eye trauma is of high priority. 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. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is it in May?
What is the most humid month?
What is the average humidity in May?
What is the wettest month?
How many days does it rain in May?
When it does not snow?
What is the average length of the day in May?
When is the sunrise / sunset in May?
How long on average sun shines in May?
How high is the UV index in May?
Average temperature in May
Castroville, TX
- Average high temperature in May: 85.5°F
The warmest month (with the highest average high temperature) is August (95.7°F).
The month with the lowest average high temperature is January (61.3°F).
- Average low temperature in May: 65.8°F
The month with the highest average low temperature is August (74.3°F).
The coldest month (with the lowest average low temperature) is January (43.3°F).
Average pressure in May
Castroville, TX
- Average pressure in May: 29.89"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The months with the lowest atmospheric pressure are May and June (29.89"Hg).
Average wind speed in May
Castroville, TX
- Average wind speed in May: 9.1mph
The windiest months (with the highest average wind speed) are April and May (9.1mph).
The calmest month (with the lowest average wind speed) is September (6.6mph).
Average humidity in May
Castroville, TX
- Average humidity in May: 73%
The month with the highest relative humidity is May (73%).
The month with the lowest relative humidity is August (58%).
Average rainfall in May
Castroville, TX
- Average rainfall in May: 2.99"
The wettest month (with the highest rainfall) is May (2.99").
The driest month (with the least rainfall) is February (0.87").
Average rainfall days in May
Castroville, TX
- Average rainfall days in May: 16.7 days
The month with the highest number of rainy days is May (16.7 days).
The month with the least rainy days is January (8.3 days).
Average snowfall in May
Castroville, TX
- Average snowfall in May: 0"
The month with the highest snowfall is January (0.12").
The months with the least snowfall are March, April, May, June, July, August, September, October, November and December (0").
Average snowfall days in May
Castroville, TX
- Average snowfall days in May: 0 days
The months with the highest number of snowfall days are January and February (0.4 days).
The months with the least snowfall days are March, April, May, June, July, August, September and October (0 days).
Average daylight in May /
Average sunshine in May
Castroville, TX
- Average daylight in May: 13h and 4min
The month with the longest days is June (Average daylight: 14h and 0min).
The month with the shortest days is December (Average daylight: 10h and 18min).
- Average sunshine in May: 7h and 4min
The month with the most sunshine is July (Average sunshine: 10h and 12min).
The months with the least sunshine are November and December (Average sunshine: 5h and 18min).
Average sunshine days in May
Castroville, TX
- Average sunshine days in May: 11.8 days
The month with the most sunshine days is January (20.7 days).
The month with the least sunshine days is May (11.8 days).
Average UV index in May
Castroville, 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
Castroville, TX
- Average cloud cover in May: 47
The months with the most cloud cover are March and May (Cloud cover 47).
The month with the least cloud cover is August (Cloud cover 23).
Average visibility in May
Castroville, 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).
Castroville, Texas, USA
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