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
Alviso's weather in May displays an average high-temperature of a pleasant 71.4°F (21.9°C), showing minor disparity from April's 66.7°F (19.3°C). In Alviso, the May nights descend to a significantly cooler average of 48.9°F (9.4°C) compared to daytime highs.Humidity
In May, the average relative humidity in Alviso is 65%.Rainfall
In Alviso, in May, it is raining for 4 days, with typically 0.2" (5mm) of accumulated precipitation. In Alviso, during the entire year, the rain falls for 52.8 days and collects up to 4.06" (103mm) of precipitation.Daylight
In Alviso, the average length of the day in May is 14h and 12min.On the first day of the month, sunrise is at 6:11 am and sunset at 7:58 pm. On the last day of May, sunrise is at 5:48 am and sunset at 8:22 pm PDT.
Sunshine
In May, the average sunshine is 11h.UV index
In Alviso, the average daily maximum UV index in May is 5. A UV Index reading of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for average individuals.Note: In May, a daily maximum UV index of 5 leads to the following instructions:
Act with care - The need to guard against sun damage is communicated. When the Sun's UV radiation is most intense during midday, it's best to find shade and limit exposure. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Alviso in May?
What is the average humidity in May in Alviso?
How much does it rain in May?
How many hours of daylight does Alviso have in May?
What time are sunrise and sunset in May?
How many hours of sunshine does Alviso have in May?
What is the UV index intensity in May?
Average temperature in May
Alviso, CA
- Average high temperature in May: 71.4°F
The warmest month (with the highest average high temperature) is July (83.5°F).
The month with the lowest average high temperature is December (56.3°F).
- Average low temperature in May: 48.9°F
The month with the highest average low temperature is August (56.8°F).
The coldest months (with the lowest average low temperature) are January and December (42.6°F).
Average pressure in May
Alviso, CA
- Average pressure in May: 29.98"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.92"Hg).
Average wind speed in May
Alviso, CA
- Average wind speed in May: 5.8mph
The windiest month (with the highest average wind speed) is May (5.8mph).
The calmest months (with the lowest average wind speed) are October and November (4.3mph).
Average humidity in May
Alviso, CA
- Average humidity in May: 65%
The month with the highest relative humidity is March (73%).
The month with the lowest relative humidity is July (58%).
Average rainfall in May
Alviso, CA
- Average rainfall in May: 0.2"
The wettest month (with the highest rainfall) is March (0.83").
The driest months (with the least rainfall) are June, July and August (0.04").
Average rainfall days in May
Alviso, CA
- Average rainfall days in May: 4 days
The month with the highest number of rainy days is March (9.9 days).
The month with the least rainy days is August (0.4 days).
Average daylight in May /
Average sunshine in May
Alviso, CA
- Average daylight in May: 14h and 1min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in May: 11h and 0min
The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 6h and 0min).
Average sunshine days in May
Alviso, CA
- Average sunshine days in May: 25.9 days
The month with the most sunshine days is August (29.6 days).
The month with the least sunshine days is March (19.5 days).
Average UV index in May
Alviso, CA
- Average UV index in May: 5
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover in May
Alviso, CA
- Average cloud cover in May: 21
The month with the most cloud cover is March (Cloud cover 35).
The month with the least cloud cover is July (Cloud cover 5).
Average visibility in May
Alviso, 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).
Alviso, California, USA
Weather forecast for your location
2. Allow the app to use your location