May weather forecastSan Jose, CA
May
Weather in May
As the city of San Jose moves further into the spring season, May stirs a significant change in the weather dynamics. The additional transition of warmer temperatures is accompanied by a continuous reduction in rainfall, down to just 0.2in. There's a noticeable shift in the city's climate, the pleasant spring conditions make way for incoming summer. The alteration in weather elements makes May a delightful bridge of transformation from spring to summer.Temperature
May experiences an average high-temperature of an agreeable 70.5°F (21.4°C), barely different from April's 66.7°F (19.3°C). San Jose encounters a steady low-temperature average of 48.9°F (9.4°C) throughout the month of May.Humidity
In May, the average relative humidity is 66%.Rainfall
In San Jose, in May, it is raining for 3.3 days, with typically 0.2" (5mm) of accumulated precipitation. Throughout the year, there are 51.5 rainfall days, and 4.06" (103mm) of precipitation is accumulated.Daylight
In San Jose, the average length of the day in May is 14h and 11min.On the first day of May, sunrise is at 6:11 am and sunset at 7:57 pm. On the last day of the month, sunrise is at 5:48 am and sunset at 8:22 pm PDT.
Sunshine
The average sunshine in May is 11.1h.UV index
In San Jose, the average daily maximum UV index in May is 5. A UV Index of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.Note: In May, a regular UV index of 5 translates into these guidelines:
Be vigilant - Suggestions to stave off sun damage are provided. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. Opt for tightly woven and loose clothing to enhance protection from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
San Jose, CA
- Average high temperature in May: 70.5°F
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is December (56.5°F).
- Average low temperature in May: 48.9°F
The month with the highest average low temperature is August (56.5°F).
The coldest month (with the lowest average low temperature) is December (43°F).
Average pressure in May
San Jose, CA
- Average pressure in May: 29.98"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.92"Hg).
Average wind speed in May
San Jose, CA
- Average wind speed in May: 5.8mph
The windiest months (with the highest average wind speed) are April and May (5.8mph).
The calmest months (with the lowest average wind speed) are September and October (4.4mph).
Average humidity in May
San Jose, CA
- Average humidity in May: 66%
The month with the highest relative humidity is March (73%).
The months with the lowest relative humidity are July and September (60%).
Average rainfall in May
San Jose, 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
San Jose, CA
- Average rainfall days in May: 3.3 days
The month with the highest number of rainy days is March (9.8 days).
The month with the least rainy days is August (0.4 days).
Average daylight in May /
Average sunshine in May
San Jose, CA
- Average daylight in May: 14h and 12min
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 6min
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
San Jose, CA
- Average sunshine days in May: 26.3 days
The month with the most sunshine days is August (29.7 days).
The month with the least sunshine days is March (19.5 days).
Average UV index in May
San Jose, 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
San Jose, 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 6).
Average visibility in May
San Jose, 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).
