City in California, United States
San Jose weather by month and the best time to visit
When to go to San Jose
Apr–Jun and Sep–Oct are mild and dry. Jul–Aug is hot inland; Nov–Mar is cool and rainy. Wildfire smoke can hit Aug–Oct.
San Jose weather by month
Average daily high, rainfall and conditions.
- Jan15°88 mm
- Feb16°91 mm
- Mar18°77 mm
- Apr19°40 mm
- May23°14 mm
- Jun27°4 mm
- Jul30°0 mm
- Aug30°1 mm
- Sep29°3 mm
- Oct25°25 mm
- Nov19°53 mm
- Dec14°114 mm
Monthly averages
| Month | High | Low | Rain | Humidity | Conditions |
|---|---|---|---|---|---|
| January | 15°C58°F | 5°C40°F | 88 mm | 84% | Cool |
| February | 16°C60°F | 6°C42°F | 91 mm | 83% | Cool |
| March | 18°C64°F | 6°C44°F | 77 mm | 82% | Cool |
| April | 19°C67°F | 7°C45°F | 40 mm | 78% | Pleasant |
| May | 23°C73°F | 9°C48°F | 14 mm | 73% | Pleasant |
| June | 27°C81°F | 11°C52°F | 4 mm | 66% | Pleasant |
| July | 30°C86°F | 12°C54°F | 0 mm | 62% | Pleasant |
| August | 30°C86°F | 12°C54°F | 1 mm | 63% | Pleasant |
| September | 29°C85°F | 12°C54°F | 3 mm | 60% | Pleasant |
| October | 25°C77°F | 10°C50°F | 25 mm | 63% | Pleasant |
| November | 19°C66°F | 7°C45°F | 53 mm | 73% | Pleasant |
| December | 14°C58°F | 5°C41°F | 114 mm | 81% | Cool |
Best months across United States
| Place | Best months | Warmest month |
|---|---|---|
| New York City | Apr–Jun, Sep–Oct | Jul (26°C) |
| Las Vegas | Mar–May, Oct–Nov | Jul (42°C) |
| Los Angeles | Mar–May, Sep–Nov | Aug (32°C) |
| Orlando | Feb–Apr, Nov | May (31°C) |
| Miami | Nov–Apr | Aug (30°C) |
| San Francisco | Apr–May, Sep–Oct | Sep (24°C) |
| Honolulu | Apr–Jun, Sep–Oct | Sep (28°C) |
| Washington, D.C. | Mar–May, Sep–Oct | Jul (31°C) |
| Chicago | May–Jun, Sep–Oct | Jul (25°C) |
| Boston | May–Jun, Sep–Oct | Jul (28°C) |
| New Orleans | Feb–Apr, Oct–Nov | Jul (30°C) |
| San Diego | Apr–May, Sep–Nov | Aug (32°C) |
| Seattle | Jun–Sep | Aug (24°C) |
| Maui | Apr–May, Sep–Oct | Sep (22°C) |
| Nashville | Apr–May, Sep–Oct | Aug (32°C) |
| Austin | Mar–May, Oct–Nov | Aug (36°C) |
| Miami Beach | Nov–Apr | Aug (30°C) |
| Key West | Dec–Apr | Aug (30°C) |
| Denver | May–Jun, Sep–Oct | Jul (33°C) |
| Philadelphia | Apr–May, Sep–Oct | Jul (30°C) |
| Portland | Jun–Sep | Aug (29°C) |
| Atlanta | Mar–May, Oct–Nov | Jul (32°C) |
| San Antonio | Mar–May, Oct–Nov | Aug (36°C) |
| Charleston | Mar–May, Oct–Nov | Jul (32°C) |
| Savannah | Mar–May, Oct–Nov | Jul (33°C) |
| Fort Lauderdale | Dec–Apr | Aug (30°C) |
| Kauai | Apr–Jun, Sep–Oct | Sep (27°C) |
| Big Island | Apr–Jun, Sep–Oct | Aug (26°C) |
| Sedona | Mar–May, Sep–Nov | Jul (35°C) |
| San Jose | Apr–May, Sep–Oct | Aug (30°C) |
Quick answers
What is the best month to visit San Jose?
Apr–May, Sep–Oct. Apr–Jun and Sep–Oct are mild and dry. Jul–Aug is hot inland; Nov–Mar is cool and rainy. Wildfire smoke can hit Aug–Oct.
When is the rainy season in San Jose?
Rain peaks in December with about 114 mm. No month averages 150 mm or more.
What is the hottest month in San Jose?
August, with average highs of 30°C (86°F).
How cold does San Jose get?
The coolest nights are in January, averaging 5°C (40°F).
More about San Jose
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Sources
- NASA POWER climatology (2001–2020)
- VTA (Santa Clara Valley Transportation Authority)
- Caltrain
- San José Mineta International Airport
- Visit San José
Climate averages are modelled from NASA POWER (MERRA-2) for 2001–2020 at about 50 km resolution, so coasts and valleys can differ a little. Temperatures are adjusted by 1.4°C for the city's elevation. Compiled and reviewed by SoloSquare. How we compile and score this. Spotted something out of date? Tell us.