AI-generatedSan Jose, California at a glance
- Best time
- Apr – Oct
- Warmest month
- Aug · 27°
- Sunshine a year
- 2,910 h
- Rain a year
- 680 mm
- Climate
- Mediterranean
- Time zone
- UTC−8 / UTC−7
- Elevation
- 26 m
Climate in San Jose, California
San Jose, California has a Mediterranean climate with warm to hot, dry summers and mild, wetter winters. August is the warmest month with average highs of 27 °C, while December is the coolest at 14 °C. With around 2,910 hours of sunshine a year, San Jose, California is sunny; June is the sunniest month with 10.3 hours a day.
Holiday weather through the year
Weather in October
Holiday weather in October
Excellent
Best time to visit: April – October
Good forSightseeing & walks
A typical day in October
- Morning, 08:00: about 15°
- Midday, 13:00: about 23°
- Afternoon, 16:00: about 23°
- Evening, 20:00: about 19°
- Night, 23:00: about 17°
07:1418:32
Pleasant evenings; a light layer can help.
Estimated from the average high and low: coolest around sunrise, warmest in mid-afternoon.
Light for photos in October
- Golden hour
- Morning 06:58–07:49 · evening 17:57–18:48
- Blue hour
- Morning 06:48–06:58 · evening 18:48–18:58
Golden hour: the sun between 4° below and 6° above the horizon; blue hour: 6° to 4° below it. Times for the 15th of the month; mountains and clouds shift the light.
What is the weather like in San Jose, California in October?
In October, San Jose, California is warm: daytime highs average 23 °C, and nights cool down to about 13 °C. The sun shines for around 8 hours a day. Rain is rare: about 3 days bring 31 mm in total. All in all, October is an excellent month for a holiday in San Jose, California.
More details for October
- Daylight
- 11 h 18 min07:14 – 18:32
- UV index
- 5 · moderateclear sky, noon (estimate)All months
- Muggy days
- 0 daysdew point 18 °C or moreAll months
- Wind
- 17 km/haverage daily peakAll months
- Cloud cover
- 30 %on averageAll months
- Hot days
- 3 days30 °C or moreAll months
- Time zone
- UTC−7America/Los_Angeles
How the score comes together
- Temperatureweight 50 %100 %
- Sunshineweight 20 %78 %
- Few rainy daysweight 30 %100 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in October
- Sunscreen
- A jumper for the evenings
Sunshine hours in San Jose, California
Average hours of bright sunshine per day, next to the length of the day. Tap a month to select it.
In October, the sun shines for about 7.7 of 11.3 hours of daylight in San Jose, California, 68 % of the day.
Sunshine hours: estimated from radiation data (ERA5, 1996–2025) and calibrated against measured station values; no weather station is close enough here. Daylight is the time from sunrise to sunset on the 15th of the month.
UV index in San Jose, California
How strong the sun is at noon, month by month, and how quickly unprotected skin burns.
- Clear-sky UV in October
- 5 · moderateAround midday seek shade; use sunscreen, a hat and sunglasses.
The sun is strongest in June (UV 10).
Minutes until sunburn in October
- Very fair skin
- about 30 min
- Fair skin
- about 35 min
- Light brown skin
- about 50 min
- Olive skin
- about 65 min
Rough guide for unprotected skin at noon under a clear sky; clouds lengthen it, water, sand and snow shorten it. Sunscreen extends the time only partly.
Monthly values: clear-sky noon estimate from the sun's angle, ozone and altitude. UV today: Open-Meteo forecast.
Rain in San Jose, California: rainy days and rainfall
A rainy day is a day with at least 1 mm of rain or snow; the amount is what falls in the whole month. Tap a month to select it.
In October, San Jose, California has about 3 rainy days with 31 mm of rain in total.
Wind and clouds in San Jose, California
How breezy and how cloudy San Jose, California is through the year. Tap a month to select it on the whole page.
Wind
Typical daily peak of the wind in km/h: what the afternoon breeze usually reaches, not the gusts.
In October, the wind in San Jose, California typically peaks at 17 km/h during the day: Beaufort 3, light breeze.
Clouds
Average share of the sky covered by cloud, day and night.
In October, cloud covers on average 30 % of the sky over San Jose, California: mostly sunny, with about 7.7 hours of sunshine a day.
Wind: mean daily maximum of the hourly wind 10 m above ground (ERA5, 1996–2025). Gusts are stronger, and the model grid of about 28 km smooths out local effects such as capes and valley winds. Clouds: mean total cloud cover of all layers over day and night (ERA5, 1996–2025). Thin high cloud counts as cover even when the sun still shines through.
Heat and humidity in San Jose, California
How often the day gets hot in San Jose, California (30 °C and more), and in which months heat and humidity come together. Tap a month to select it.
Heat calendar
- pleasant
- some hot or muggy days
- often muggy
- often hot
- hot and muggy
In October, San Jose, California has about 3 hot days, with an average daytime high of 23 °C: pleasant. Heat plays no part this month.
Hot days reach at least 30 °C; a month counts as muggy when the mean dew point reaches 18 °C on at least 15 days. Averages from ERA5 and ERA5-Land, 1996–2025. Muggy nights through the year
Climate through the year
Long-term monthly averages. Tap a month to see its details.
Nights and sleep in San Jose, California
How warm the nights get in each month, from the mean night-time low. Tap a month for details.
- Cold 0–8°
- Cool 8–15°
- Pleasant 15–20°
CoolOctober: nights around 13°. A duvet at night and a jumper for the evening.
The coolest nights are in January (6°), the warmest in September (15°). Nights are pleasant for sleeping (15 to 20 °C) from July to September. Nights fall below 8 °C on average from December to February, so the room should be heated.
Temperatures through the year
Average daytime high, night-time low and sea temperature per month.
| Month | Score | Day | Night | Sun | Rain days | Rain mm |
|---|---|---|---|---|---|---|
| JanuaryJan | 59 | 15° | 6° | 5.4 h | 9 | 135 |
| FebruaryFeb | 66 | 15° | 7° | 6.2 h | 9 | 139 |
| MarchMar | 77 | 17° | 8° | 7.1 h | 9 | 92 |
| AprilApr | 97 | 19° | 9° | 8.7 h | 5 | 42 |
| MayMay | 100 | 22° | 11° | 9.7 h | 3 | 19 |
| JuneJun | 100 | 25° | 13° | 10.3 h | 1 | 3 |
| JulyJul | 100 | 27° | 15° | 10.2 h | 0 | 0 |
| AugustAug | 98 | 27° | 15° | 9.7 h | 0 | 1 |
| SeptemberSep | 100 | 27° | 15° | 9.1 h | 1 | 3 |
| OctoberOct | 96 | 23° | 13° | 7.7 h | 3 | 31 |
| NovemberNov | 84 | 18° | 10° | 6.3 h | 7 | 73 |
| DecemberDec | 55 | 14° | 7° | 5.2 h | 10 | 142 |
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences
37.34° N, 121.89° W · 26 m · America/Los_Angeles
Best time to visit San Jose, California
The best time to visit San Jose, California is from April to October. For sightseeing, day trips and hiking, conditions are most comfortable from February to November. The wettest month is December with 142 mm of precipitation.
San Jose, California through the seasons
How the weather changes over the seasons, with averages for each.
San Jose, California in spring
Mar – May
Excellent
- 17–22 °C by day
- 9 h of sun a day
- 16 rainy days in all
San Jose, California in summer
Jun – Aug
Excellent
- 25–27 °C by day
- 10 h of sun a day
- 1 rainy days in all
San Jose, California in autumn
Sep – Nov
Excellent
- 18–27 °C by day
- 8 h of sun a day
- 10 rainy days in all
San Jose, California in winter
Dec – Feb
Good
- 14–15 °C by day
- 6 h of sun a day
- 28 rainy days in all
Find your perfect month
Tell us what you like and we rate every month in San Jose, California for you.
Your best months: May – June, October
Based on the climate averages; tap a month to see its details.
Compare two months in San Jose, California
Pick two months to see how the weather differs. A tick marks the clearly better value; for temperatures it depends on your plans.
October and May bring similar holiday weather to San Jose, California (score 96 and 100). In May, days are 1 °C cooler than in October. The sun shines 2 hours longer a day in May.
| Month | October | May |
|---|---|---|
| Weather score | 96 | 100better |
| Day high | 23° | 22° |
| Night low | 13° | 11° |
| Sunshine | 7.7 h | 9.7 hbetter |
| Rainy days | 3 | 3 |
| Rainfall | 31 mm | 19 mmbetter |
Based on the climate averages 1996–2025.
Which month for what?
Beach & swimming
No sea nearby
Sea from 21 °C, warm and mostly dry
Sightseeing & hiking
Feb – Nov
15–28 °C and not too much rain
San Jose, California month by month
The typical weather for every month at a glance.
59January15° · 5 h
In January, San Jose, California is cool: daytime highs average 15 °C, and nights cool down to about 6 °C. Expect around 5 hours of sunshine a day. Rain is frequent, with about 9 rainy days and 135 mm in total. All in all, January is a so-so month for a holiday in San Jose, California.
San Jose, California in January66February15° · 6 h
In February, San Jose, California is cool: daytime highs average 15 °C, and nights cool down to about 7 °C. Expect around 6 hours of sunshine a day. Rain is frequent, with about 9 rainy days and 139 mm in total. All in all, February is a good month for a holiday in San Jose, California.
San Jose, California in February77March17° · 7 h
In March, San Jose, California is mild: daytime highs average 17 °C, and nights cool down to about 8 °C. The sun shines for around 7 hours a day. Rain is frequent, with about 9 rainy days and 92 mm in total. All in all, March is a good month for a holiday in San Jose, California.
San Jose, California in March97April19° · 9 h
In April, San Jose, California is mild: daytime highs average 19 °C, and nights cool down to about 9 °C. The sun shines for around 9 hours a day. Rain is rare: about 5 days bring 42 mm in total. All in all, April is an excellent month for a holiday in San Jose, California.
San Jose, California in April100May22° · 10 h
In May, San Jose, California is warm: daytime highs average 22 °C, and nights cool down to about 11 °C. With around 10 hours of sunshine a day, there is plenty of sun. Rain is rare: about 3 days bring 19 mm in total. All in all, May is an excellent month for a holiday in San Jose, California.
San Jose, California in May100June25° · 10 h
In June, San Jose, California is warm: daytime highs average 25 °C, and nights cool down to about 13 °C. With around 10 hours of sunshine a day, there is plenty of sun. It hardly ever rains. All in all, June is an excellent month for a holiday in San Jose, California.
San Jose, California in June100July27° · 10 h
In July, San Jose, California is hot: daytime highs average 27 °C, and nights cool down to about 15 °C. With around 10 hours of sunshine a day, there is plenty of sun. It hardly ever rains. On about 7 days the thermometer climbs to 30 °C or more. All in all, July is an excellent month for a holiday in San Jose, California.
San Jose, California in July98August27° · 10 h
In August, San Jose, California is hot: daytime highs average 27 °C, and nights cool down to about 15 °C. With around 10 hours of sunshine a day, there is plenty of sun. It hardly ever rains. On about 7 days the thermometer climbs to 30 °C or more. All in all, August is an excellent month for a holiday in San Jose, California.
San Jose, California in August100September27° · 9 h
In September, San Jose, California is warm: daytime highs average 27 °C, and nights cool down to about 15 °C. With around 9 hours of sunshine a day, there is plenty of sun. It hardly ever rains. On about 7 days the thermometer climbs to 30 °C or more. All in all, September is an excellent month for a holiday in San Jose, California.
San Jose, California in September96October23° · 8 h
In October, San Jose, California is warm: daytime highs average 23 °C, and nights cool down to about 13 °C. The sun shines for around 8 hours a day. Rain is rare: about 3 days bring 31 mm in total. All in all, October is an excellent month for a holiday in San Jose, California.
San Jose, California in October84November18° · 6 h
In November, San Jose, California is mild: daytime highs average 18 °C, and nights cool down to about 10 °C. Expect around 6 hours of sunshine a day. Rain falls on about 7 days, adding up to 73 mm. All in all, November is an excellent month for a holiday in San Jose, California.
San Jose, California in November55December14° · 5 h
In December, San Jose, California is cool: daytime highs average 14 °C, and nights cool down to about 7 °C. Expect around 5 hours of sunshine a day. Rain is frequent, with about 10 rainy days and 142 mm in total. All in all, December is a so-so month for a holiday in San Jose, California.
San Jose, California in DecemberSan Jose, California compared
Put San Jose, California side by side with another destination.
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San Jose vs. Oakland
In October the holiday weather in San Jose and Oakland is about equally good (score 96 vs. 95). During the day Oakland is 2 °C cooler than San Jose.
| in October | San Jose | Oakland |
|---|---|---|
| Holiday score | 96 | 95 |
| Daytime high | 23° | 21° |
| Sea | – | 14° |
| Sunshine | 8 h | 8 h |
| Rainy days | 3 | 3 |
| Best time | Apr – Oct | Apr – Oct |
Through the year
USA in October: the best places
In October, San Jose, California ranks 6 among the 31 nearest destinations in this country.
- Las Vegas26°99
- 2Mariposa (Yosemite)23°98
- 3Los Angeles26°19°98
- 4Long Beach25°19°98
- 5Sedona23°97
- 6San JoseThis page23°96
- 7Sacramento25°96
- 8Page (Lake Powell)21°96
Planning a trip to San Jose, California
Weather for your travel dates
Pick your arrival and length of stay, and we sum up the weather to expect.
San Jose, California in the school holidays
How the weather suits the usual holiday periods. Dates vary by school and region, so each holiday uses the months it usually falls in.
San Jose, California has its best school-holiday weather during May half-term (score 100) and its weakest during the Christmas holidays (score 57).
- 91
Easter holidays
Mar – Apr
Excellent
- 18 °C by day
- 8.2 h of sun a day
- 6 rainy days a month
Good for: Sightseeing & walks
- 100
May half-term
May – Jun
ExcellentBest holidays
- 22 °C by day
- 9.8 h of sun a day
- 2 rainy days a month
Good for: Sightseeing & walks
- 99
Summer holidays
Jul – Aug
Excellent
- 27 °C by day
- 9.9 h of sun a day
- 0 rainy days a month
Good for: Sightseeing & walks
- 96
October half-term
Oct
Excellent
- 23 °C by day
- 7.7 h of sun a day
- 3 rainy days a month
Good for: Sightseeing & walks
- 57
Christmas holidays
Dec – Jan
Fair
- 14 °C by day
- 5.3 h of sun a day
- 10 rainy days a month
Based on the climate averages 1996–2025.
Getting there
Flying from
- Nonstop flight
- about 10 h 55 min
- Distance
- 8,620 km
- Time zone
- UTC−7
- Jet lag
- About 5 days (8 h west)
Rule of thumb for flying west: for a few days before, stay up a little later, and get afternoon and evening light at your destination.
Estimated from the straight-line distance: 30 minutes for take-off and landing plus 830 km/h cruising speed.
Frequently asked questions about San Jose, California
When is the best time to visit San Jose, California?
The best time to visit San Jose, California is from April to October. That is when the holiday weather score, which combines temperature, sea, sunshine and rain, is highest.
What is the warmest month in San Jose, California?
August is the warmest month, with average highs of 27 °C and nights around 15 °C. December is the coolest month at 14 °C.
When does it rain most in San Jose, California?
The wettest month is December with 142 mm of precipitation. The driest month is July with 0 mm.
How many hours of sunshine does San Jose, California get?
San Jose, California gets around 2,910 hours of sunshine a year. The sunniest month is June with 10.3 hours a day; in December there are 5.2 hours a day.
What time zone is San Jose, California in?
San Jose, California uses the time zone America/Los_Angeles: UTC−8 in January and UTC−7 in July.
How long is the flight from London to San Jose, California?
A nonstop flight from London to San Jose, California takes about 10 h 55 min, for a straight-line distance of about 8,620 km.
Which school holidays are best for San Jose, California?
San Jose, California has its best school-holiday weather during May half-term (score 100) and its weakest during the Christmas holidays (score 57). Holiday ratings (0–100): Easter holidays 91, May half-term 100, Summer holidays 99, October half-term 96, Christmas holidays 57.
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