Climate & Weather in San Jose
San Jose has a genuine Mediterranean climate -- sharply contrasting wet winters and dry summers -- with July/August highs around 82°F and December/February highs around 56.5°F-58.1°F, a real, genuine (if still comparatively mild) seasonal swing distinct from San Diego's more invariant coastal climate covered elsewhere in this project.
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Learn moreA Genuine Mediterranean Climate With Real Seasonal Contrast
San Jose's climate is classified Mediterranean -- sharply contrasting wet and dry seasons -- a real, genuine seasonal pattern distinct from San Diego's more narrow, invariant coastal climate covered elsewhere in this project's California coverage. Summer highs peak in July (82°F) and August (81.9°F); winter highs run 56.5°F (December) to 58.1°F (February).
A Real, Concentrated Wet Season
San Jose receives 15-20 inches of annual precipitation, with a real 82% of the yearly total falling November through March. Summer rainfall is genuinely minimal -- roughly 0.2 inches combined across June, July, and August -- a real, sharp dry-season contrast typical of Mediterranean climates.
A Real, Genuine Contrast With San Diego's Climate
As detailed on San Diego's own climate-weather topic page, San Diego's coastal climate runs genuinely more invariant year-round (a narrow band around a 70°F average annual high) than San Jose's real seasonal swing. Anyone comparing these two California A+ markets specifically on climate should understand this genuine, disclosed divergence rather than assuming 'California weather' is monolithic.
Genuinely Mild by National Standards, Despite Real Seasonal Variation
Even with its real seasonal swing, San Jose's climate remains genuinely mild by national standards -- summer highs in the low 80s and winter highs in the upper 50s are far more moderate than the four-season extremes covered for several other US markets, even though San Jose's swing is real and more pronounced than San Diego's.
Key takeaways
- San Jose has a genuine Mediterranean climate -- July/August highs around 82°F, December/February highs around 56.5°F-58.1°F -- a real, if comparatively mild, seasonal swing.
- Annual precipitation runs 15-20 inches, with 82% falling Nov-Mar; summer rainfall is genuinely minimal (~0.2 inches combined Jun-Aug).
- San Jose's climate runs genuinely more seasonally variable than San Diego's more invariant coastal climate -- a real, disclosed divergence between these two California A+ markets.
- Despite this real seasonal swing, San Jose's climate remains genuinely mild by national standards compared to four-season-extreme markets elsewhere.
- San Jose's Mediterranean pattern (wet winters, dry summers) is a real, defining feature worth understanding precisely rather than assuming uniform 'California weather.'
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