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 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
The arrival of May signals a slight increase in the average high-temperature, moving from a moderately hot 73.9°F (23.3°C) in April to a still warm 82°F (27.8°C). Contrasting the daytime warmth, San Joaquin's May nights cool down to an average of 56.7°F (13.7°C).Heat index
For most parts of May, the heat index is estimated at 82.4°F (28°C). When exposure and activity are sustained, they could induce fatigue, with a chance of heat cramps.Data suggests that the heat index is set for environments in shade and with a light wind. Direct exposure to sunlight could raise the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', combines air temperature and relative humidity to represent a human perceived temperature equivalent. Factors such as metabolic variations, being pregnant, and physical activity can impact an individual's weather perception. Direct sunlight can potentially raise the heat index by 15 Fahrenheit (8 Celsius) degrees, so it's crucial to consider. Heat index values are of high significance for children. Kids are generally in more danger than adults because they perspire less. Their large skin surface area compared to their small bodies and the excessive heat due to their actions raises their risk.
Humidity
In San Joaquin, California, the average relative humidity in May is 42%.Rainfall
In San Joaquin, during May, the rain falls for 2.7 days and regularly aggregates up to 0.16" (4mm) of precipitation. In San Joaquin, during the entire year, the rain falls for 37.2 days and collects up to 2.48" (63mm) of precipitation.Daylight
The average length of the day in May is 14h and 8min.On the first day of May, sunrise is at 6:06 am and sunset at 7:49 pm. On the last day of the month, sunrise is at 5:43 am and sunset at 8:13 pm PDT.
Sunshine
The average sunshine in May is 11.5h.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: In May, the maximum UV index of 6 suggests these recommendations:
Refrain from overexposure. Fair-skinned individuals could burn in under 20 minutes. Avoid direct sunlight between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. Keep in mind that shade structures may not provide complete protection. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in May?
What is the average humidity in May?
How much does it rain in May?
How many hours of daylight does San Joaquin have in May?
When is the sunrise / sunset in May in San Joaquin?
How many hours of sunshine does San Joaquin have in May?
How high is the UV index in May?
Average temperature in May
San Joaquin, CA
- Average high temperature in May: 82°F
The warmest month (with the highest average high temperature) is July (100.9°F).
The month with the lowest average high temperature is December (56.5°F).
- Average low temperature in May: 56.7°F
The month with the highest average low temperature is July (67.1°F).
The coldest month (with the lowest average low temperature) is December (42.6°F).
Average pressure in May
San Joaquin, CA
- Average pressure in May: 29.95"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in May
San Joaquin, CA
- Average wind speed in May: 7.1mph
The windiest month (with the highest average wind speed) is June (7.6mph).
The calmest month (with the lowest average wind speed) is January (5.1mph).
Average humidity in May
San Joaquin, CA
- Average humidity in May: 42%
The months with the highest relative humidity are January and December (66%).
The month with the lowest relative humidity is July (30%).
Average rainfall in May
San Joaquin, CA
- Average rainfall in May: 0.16"
The wettest months (with the highest rainfall) are February and March (0.43").
The driest months (with the least rainfall) are June, July, August and September (0.04").
Average rainfall days in May
San Joaquin, CA
- Average rainfall days in May: 2.7 days
The month with the highest number of rainy days is March (7 days).
The months with the least rainy days are August and September (0.5 days).
Average daylight in May /
Average sunshine in May
San Joaquin, CA
- Average daylight in May: 14h and 1min
The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in May: 11h and 3min
The month with the most sunshine is July (Average sunshine: 12h and 12min).
The months with the least sunshine are February and December (Average sunshine: 6h and 24min).
Average sunshine days in May
San Joaquin, CA
- Average sunshine days in May: 27.5 days
The month with the most sunshine days is August (29.7 days).
The month with the least sunshine days is February (22 days).
Average UV index in May
San Joaquin, CA
- Average UV index in May: 6
The months with the highest UV index are June, July and August (UV index 7).
The months with the lowest UV index are January, November and December (UV index 3).
Average cloud cover in May
San Joaquin, CA
- Average cloud cover in May: 15
The month with the most cloud cover is March (Cloud cover 29).
The months with the least cloud cover are July and August (Cloud cover 4).
Average visibility in May
San Joaquin, CA
- 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 Joaquin, California, USA
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