Weather in San Jose in May 2025
Average weather
Average temperature in San Jose in May
The expected average maximum temperature in May is +81°F with a maximum of +82°F and a minimum of +61°F.
The average maximum temperature goes up 17% by the end of the month, compared with the beginning of the month, from +75°F to +79°F.
Is San Jose warm or cold in May?
San Jose is typically warm in May.
Maximum temperatures go down compared to the previous month from +79°F to +77°F. The minimum temperature also goes up from +63°F to +64°F.
It’s generally warm, but pack a long-sleeve shirt for evenings.
Take a look at how May is compared to other months in San Jose:
Water temperature in San Jose in May
Water in San Jose in May is Very warm. It varies from +83°F to +86°F, with an average of +85°F. Note that the air temperature is lower than the water temperature, averaging around +77°F.
The water temperature in May is one of the warmest of the entire year:
Can you swim in San Jose in May?
Climate in San Jose in May
| April | May | June | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +79°F | +77°F | +77°F | ||||
| Min. temperature | ||||||
| +55°F | +59°F | +59°F | ||||
| Max. temperature | ||||||
| +88°F | +86°F | +84°F | ||||
| Rainfall | ||||||
| 257 mm | 602 mm | 679 mm | ||||
| Wind | ||||||
| 3 m/s | 2 m/s | 2 m/s | ||||
| Avg. water temperature | ||||||
| +85°F | +85°F | +84°F | ||||
| Humidity | ||||||
| 72% | 81% | 84% | ||||
| Air pressure | ||||||
| 1014 HPa | 1014 HPa | 1014 HPa | ||||
| Sunny days | ||||||
| 0 | 0 | 0 | ||||
| Cloudy days | ||||||
| 0 | 0 | 0 | ||||
| Rainy days | ||||||
| 24 | 20 | 18 | ||||
| Snowy days | ||||||
| 0 | 0 | 0 | ||||
May typically has worse weather conditions compared to April. It’s getting colder in May. From +79°F in the day, the average maximum temperature lowers to +77°F. Prepare for more rain. Average rainfall goes from 257 mm to 602 mm. Humidity rises from 72% to 81%. Winds are calmer in comparison to April, going down from 3 m/s to 2 m/s on average. The amount of sunny days stay about the same, averaging 0 sunny days during the month.
June brings much the same weather, it remains ok.
Wind
The average wind speed is 4 m/s getting up to 7 m/s which is a medium breeze. You can feel it, especially getting out of the water.
The average wind speed in San Jose is gradually decreasing during May, going from 3 m/s to 2 m/s over the course of the month.
Rain
How was the weather last May in San Jose?
Climate Change Over the Years
The climate in San Jose in May has not changed that much over the last 43 years.
The average temperature was the lowest in 1999 (+74°F) and the highest in 2013 (+79°F). The driest year was 2023 with only 3365 mm of rainfall, and the wettest year was 1995 with 7044 mm.
FAQ
Is May a good time to visit San Jose?
Can you sunbathe in San Jose in May?
Can you swim in San Jose in May?
Is San Jose rainy in May?
Is it sunny in San Jose in May?
Monthly weather in San Jose
Source of the data
For this page, we’ve looked at the typical weather in San Jose, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.