Norman Y. Mineta San Jose International Airport

KSJC / SJC

San Jose, US

Last Updated
Apr 21, 22:53Z

Current Weather

Display Units
Fresh 5 min ago
22:53Z

🌙 Night
VFR
Flight Rules
13°C
Temperature
Dewpoint: 11°C
4 kt
140°
6 SM
Visibility
3,200 ft
Ceiling
Above Ground Level
1015 hPa
QNH
Altimeter Setting

Raw METAR

METAR KSJC 212253Z 14004KT 6SM RA SCT022 BKN032 OVC050 13/11 A2998 RMK AO2 RAE12B44 SLP150 P0003 T01330106

Clouds - Visual Profile

12,000ft
9,000ft
6,000ft
3,000ft
Ground
Field Elev: 62 ft
SCT 2,200 ft AGL
BKN 3,200 ft AGL
OVC 5,000 ft AGL
SCT
Scattered (3/8-4/8 sky coverage)
2,200 ft
AGL (Above Ground)
2,262 ft AMSL
☁️
BKN
Broken (5/8-7/8 sky coverage)
3,200 ft
AGL (Above Ground)
3,262 ft AMSL
☁️
OVC
Overcast (8/8 sky coverage)
5,000 ft
AGL (Above Ground)
5,062 ft AMSL

Weather Briefing

VFR

Norman Y. Mineta San Jose International Airport is currently reporting visual flight rules (VFR) conditions with overcast skies at 5,000 feet and 6 SM visibility.

Wind Analysis

Winds are from the southeast (140°) at 4 knots.

Visibility & Ceiling

Visibility is 6 SM. The ceiling is 3200 feet AGL (broken), well above standard VFR minimums.

Temperature & Moisture

Temperature is 13°C (55°F) with a dewpoint of 11°C. The temperature-dewpoint spread is very narrow, indicating saturated or near-saturated air. Fog formation or low cloud development is likely.

Forecast Outlook

The TAF forecast covers the next 24 hours. Conditions are expected to fluctuate between VFR and MVFR. VFR pilots should be prepared for deteriorating conditions. Expected weather includes: Light Showers Rain.

Pilot Recommendations

Conditions are favorable for visual flight. The narrow temperature-dewpoint spread creates risk of fog formation, particularly during evening and early morning hours. The forecast indicates conditions may deteriorate. Ensure you have fuel reserves and a viable alternate airport.

This briefing is generated from real-time METAR and TAF data. Always verify with official sources before flight.

QNH
1015 hPa
Sea Level Pressure
For altitude above MSL
QFE
1013 hPa
Field Pressure
Height above aerodrome (62 ft)
Pressure Alt
10 ft
QNE Reference
Standard: 1013 hPa
Density Altitude: -215 ft
ISA Deviation: -1.9°C

Forecast (TAF)

View Full TAF
Raw TAF
TAF KSJC 211744Z 2118/2218 22008KT P6SM -SHRA FEW015 SCT025 BKN050 FM212100 29008KT 4SM -SHRA OVC050 FM220000 28008KT P6SM VCSH BKN050 FM220600 22007KT P6SM SCT050 FM221000 15010KT P6SM -SHRA SCT025 BKN050 FM221600 15004KT P6SM SCT050
Upcoming Changes (Next 12 Hours)
22:57Z BASE
+0h
VFR 220° 8 kt
Visibility: >6SM
Ceiling: 5,000 ft
Light Showers Rain
00:00Z FM220000
+2h
VFR 280° 8 kt
Visibility: >6SM
Ceiling: 5,000 ft
06:00Z FM220600
+8h
VFR 220° 7 kt
Visibility: >6SM
10:00Z FM221000
+12h
VFR 150° 10 kt
Visibility: >6SM
Ceiling: 5,000 ft
Light Showers Rain

24-Hour Weather Evolution

Loading weather data...
Data Sources
  • • Current conditions from METAR observations
  • • Historical data from past 24 hours
  • • No forecast or predicted data included
  • • Data updated with each new METAR report
Chart Features
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Note: Future values beyond current TAF validity are estimates based on climatological data and trends. Always verify with current forecasts before flight operations.

Airport Runway Layout

N
SJC
11 ✈️
29
12L ✈️
30R
12R ✈️
30L

Runway Information

Runway Length Width Surface Heading Wind Component
✈️ 11/29
Active: 11
4,599 ft 100 ft ASP 139°
3.5 kt 2.0 kt
30° angle
✈️ 12L/30R
Active: 12L
11,000 ft 150 ft CON 139°
3.8 kt 1.4 kt
20° angle
✈️ 12R/30L
Active: 12R
11,000 ft 150 ft CON 138°
3.8 kt 1.4 kt
20° angle
🟢 Active Runway: Best headwind component for current conditions
⬆️ Headwind: Favorable wind component
↔️ Crosswind: ≤10kt Safe, 11-15kt Caution, >15kt Challenging

Weather Statistics - KSJC

5,730 observations | Sep 2025 - Apr 2026

Flight Rules Distribution

VFR
78.6%
MVFR
14.4%
IFR
4.5%
LIFR
2.6%

Norman Y. Mineta San Jose International Airport typically experiences VFR conditions 78.6% of the time, though instrument-rated pilots will find IFR weather present approximately 7.1% of observations. Prevailing winds are from the NW averaging 6.6 knots. Calm conditions occur 28.6% of the time. Temperature extremes range from 2°C to 34°C, reflecting significant seasonal variation. The best months for VFR flying are March, February, January.

Wind Analysis

Prevailing Direction: NW (315°)
Average Speed: 6.6 kt
Maximum Recorded: 23 kt
Calm Winds: 28.6%
Direction Distribution:
N
8.9%
NE
0.8%
E
2.9%
SE
15.4%
S
13.1%
SW
3.7%
W
5.3%
NW
21.3%

Temperature Range

Average: 14.5°C
Range: 2°C to 34°C
2°C 34°C

Visibility

Average: 9.2 SM
Below 3 SM: 1%
Fog Frequency: 1%

Best Months for VFR

March February January

Runway Wind Analysis

Runway 11/29
Favorable wind: 100%
Avg crosswind: 4 kt
Runway 12L/30R
Favorable wind: 100%
Avg crosswind: 3.3 kt
Runway 12R/30L
Favorable wind: 100%
Avg crosswind: 3.3 kt

Statistics computed from 5,730 METAR observations (Sep 2025 - Apr 2026). Data sourced from official aviation weather services. Updated daily.

Norman Y. Mineta San Jose International Airport - Airport Information

Airport Details

ICAO Code: KSJC
IATA Code: SJC
Type: large airport
Status: active
Elevation: 62 ft MSL

Location

City: San Jose
Country: US
Latitude: 37.362452°
Longitude: -121.929188°
Time Zone: Etc/GMT+8

Runway Information

Runway 11/29
Length: 4,599 ft
Width: 100 ft
Surface: ASP
ILS: No
Runway 12L/30R
Length: 11,000 ft
Width: 150 ft
Surface: CON
ILS: No
Runway 12R/30L
Length: 11,000 ft
Width: 150 ft
Surface: CON
ILS: No

About Norman Y. Mineta San Jose International Airport

Overview

Norman Y. Mineta San Jose International Airport serves the San Jose metropolitan area in California, positioned at 37.362452, -121.929188. As a large airport with three substantial runways, it handles significant commercial and potentially corporate aviation traffic. The airport sits at an elevation of 62 feet mean sea level, situated in the Santa Clara Valley region.

Flying Conditions

The airport's elevation of 62 ft MSL indicates a low-altitude environment with generally stable atmospheric conditions. Multiple runway configurations (11/29, 12L/30R, and 12R/30L) suggest the airport is prepared to handle varied wind conditions and provide operational flexibility. Runway lengths range from 4,599 ft on the shorter runway to 11,000 ft on the two concrete runways, accommodating diverse aircraft types.

Notable Features

San Jose's airport is strategically located in Silicon Valley, surrounded by complex urban terrain and proximity to mountainous regions. The three-runway configuration provides significant operational resilience, with two lengthy 11,000 ft concrete runways complemented by a shorter 4,599 ft asphalt runway. Pilots should anticipate potential urban thermal effects and terrain-influenced wind patterns typical of the Santa Clara Valley.

Approach Considerations

Runway selection will likely depend on prevailing wind directions, with the substantial 11,000 ft concrete runways (12L/30R and 12R/30L) providing primary approach options. The shorter 4,599 ft asphalt runway (11/29) may serve secondary or specialized operational needs. Pilots should prepare for potential urban heat island effects and localized wind variations characteristic of the San Jose metropolitan area.

Data Sources & Accuracy: Airport information sourced from OurAirports.com, a collaborative database of worldwide airport data. Weather data from official aviation weather services including NOAA Aviation Weather Center and international METAR/TAF providers. Information is updated regularly but pilots should always verify current conditions and NOTAMs through official channels before flight operations.

Official Data Sources

Weather NOAA Aviation Weather Center • International METAR/TAF Network
Airports OurAirports.com • Public domain airport database
NOTAMs FAA NOTAM System • ICAO NOTAM Distribution
Last updated: Jan 1, 1970 12:00 AM UTC

Disclaimer: Data is provided for informational purposes only. Pilots must verify all information through official sources before flight operations. Weather conditions change rapidly; always obtain a current briefing from approved weather services.