Quick Answer: In San Jose today, a 70 kg adult needs approximately 2.75 liters of water based on current temperature (16.4°C), humidity (78%), and UV index (5).
Personalized water intake recommendations based on today's weather conditions
In San Jose, today's hydration target is approximately 2750 ml/day for a 70 kg adult, adjusted for current temperature, humidity, UV, and elevation. Use this guide to plan daily water intake and compare with recent monthly hydration trends.
65 mapped systems currently show 25 open violations, including 3 health-based issues.
Health-based issues currently open
Current tap-water dataset for SAN JOSE, CA reports 25 open violations across 65 mapped utility systems.
Moderate conditions in San Jose today. Maintain regular hydration habits.
Morning boost: Start with 500–700ml within the first hour of waking to kickstart hydration after overnight fasting.
Steady intake: Sip consistently throughout the day rather than drinking large amounts at once. Aim for 150-200ml every 30-45 minutes.
Pre-activity: If exercising or spending time outdoors in San Jose, drink an additional 200-300ml 15-20 minutes beforehand.
Real monthly trends from our city weather cache
Average daily hydration need in San Jose in September 2026: 2937 ml/day (based on 12 daily records).
The hottest month for hydration in San Jose in the available dataset is September 2026, with an average requirement of 2937 ml/day and an average temperature of 27.1°C.
The lowest hydration month in the same dataset is May 2026, averaging 2772 ml/day.
Data coverage for this city: 2026-03-29 to 2026-09-12 (115 total daily records).
| Month | Avg Hydration (ml/day) | Avg Temp (C) | Records |
|---|---|---|---|
| March 2026 | 2917 | 24.3 | 3 |
| April 2026 | 2857 | 19.7 | 30 |
| May 2026 | 2772 | 17.9 | 6 |
| June 2026 | 2915 | 27.0 | 2 |
| July 2026 | 2900 | 26.6 | 31 |
| August 2026 | 2914 | 28.7 | 31 |
| September 2026 | 2937 | 27.1 | 12 |
As the air gets drier in San Jose, insensible water loss increases. You might not sweat as much as in summer, but your baseline needs remain high.
Transitioning to cooler weather is a good time to incorporate water-rich foods like soups and seasonal fruits into your diet to supplement fluid intake.
Monitor your skin hydration; dry skin is often the first sign that your internal hydration levels are dropping as the season changes.
San Jose is located at a latitude of 37.34° and an elevation of 33m. Its temperate climate offers distinct seasons, each requiring minor adjustments to your water intake strategy.
The combination of local weather patterns and urban environment factors in San Jose creates a unique hydration profile. Our algorithm processes real-time data to ensure your daily recommendation is precise.
Explore broader regional context in our United States hydration hub and compare nearby cities to refine your travel hydration strategy.
Based on current weather conditions, about 2.8 L for a 70 kg adult. Use our personalized calculator for your specific needs.
Light electrolyte support (~0.2 L) may be beneficial if active outdoors.
Factors include feels-like temperature 18.4°C, humidity 78%, UV index 5, and elevation 33m. These conditions affect your body's cooling needs.
Moderate conditions in San Jose today. Maintain regular hydration habits.
September 2026 had the highest monthly average in our dataset at 2937 ml/day.
May 2026 had the lowest monthly average in our dataset at 2772 ml/day.
Yes. For travel and walking-heavy days in San Jose, plan for 2750-3250 ml/day depending on heat, UV, and activity.
See our San Jose, CA tap water report for EPA SDWIS-based utility and open-violation context at /tap-water/san-jose-ca.
Explore hydration guides for cities within 1000km of San Jose
City-to-city hydration needs can vary across short distances due to microclimate, elevation, and humidity patterns.
Explore related city pages in the same country for stronger local context
Last updated: 9/12/2026 • Page specific to San Jose, United States