Current Weather
Raw METAR
Weather Briefing
MVFRNaval Station Mayport / Admiral David L McDonald Field is currently reporting marginal VFR (MVFR) conditions with clear skies and 3 SM visibility. Note: This observation is 1.3 hours old and conditions may have changed.
Wind Analysis
Winds are from the southwest (220°) at 7 knots. Runway 23 is favored with a 7-knot headwind and 1-knot crosswind component.
Visibility & Ceiling
Visibility is 3 SM, below VFR minimums in some airspace classifications. Check local requirements before departing VFR. Skies are clear with unlimited ceiling.
Temperature & Moisture
Temperature is 26°C (79°F) with a dewpoint of 23°C. The narrow temperature-dewpoint spread suggests high humidity and potential for visibility restrictions, especially during cooling periods.
Pilot Recommendations
VFR pilots should exercise caution. Consider filing IFR if instrument rated, or postponing the flight if conditions are expected to deteriorate further. The narrow temperature-dewpoint spread creates risk of fog formation, particularly during evening and early morning hours.
This briefing is generated from real-time METAR and TAF data. Always verify with official sources before flight.
24-Hour Weather Evolution
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Airport Runway Layout
Runway Information
| Runway | Length | Width | Surface | Heading | Wind Component |
|---|---|---|---|---|---|
|
✈️ 05/23
Active: 23
|
8,001 ft | 200 ft | ASP | 43° |
↑ 6.9 kt
•
↔ 1.2 kt
10° angle
|
Weather Statistics - KNRB
10,914 observations | Sep 2025 - Jul 2026Flight Rules Distribution
Naval Station Mayport / Admiral David L McDonald Field enjoys predominantly VFR conditions, with visual flight rules prevailing 80.9% of the time. Prevailing winds are from the NE averaging 8.9 knots, with gusts recorded up to 32 knots. Temperature extremes range from -4°C to 35°C, reflecting significant seasonal variation. The best months for VFR flying are November, June, September.
Wind Analysis
Temperature Range
Visibility
Best Months for VFR
Runway Wind Analysis
Statistics computed from 10,914 METAR observations (Sep 2025 - Jul 2026). Data sourced from official aviation weather services. Updated daily.
Naval Station Mayport / Admiral David L McDonald Field - Airport Information
Airport Details
Location
Runway Information
Flight Planning Tools
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About Naval Station Mayport / Admiral David L McDonald Field
Overview
Naval Station Mayport / Admiral David L McDonald Field serves as a critical naval aviation facility located in Jacksonville, Florida. Situated at an elevation of 15 feet MSL, this medium airport supports military aviation operations with a single 8,001-foot asphalt runway oriented 05/23.
Flying Conditions
The airport experiences predominantly VFR conditions, with 79.9% of observations showing clear weather and only 4.3% IFR conditions. Winds are typically from the northeast at 45 degrees, averaging 8.4 knots, with occasional gusts up to 29 knots. September, October, and November offer the most consistent VFR flying conditions, with moderate temperatures ranging from 1°C to 32°C.
Notable Features
The coastal location near Jacksonville influences the airport's meteorological characteristics, with occasional reduced visibility and fog affecting 2.9% of observations. The runway has excellent wind alignment, with 100% favorable wind conditions and an average crosswind component of only 4.5 knots, facilitating comfortable landings and takeoffs.
Approach Considerations
Pilots can expect generally stable approach conditions on runway 05/23, with good wind alignment and minimal crosswind challenges. Visibility averages 9.4 statute miles, with only 1.7% of observations showing visibility below 3 miles. Standard preparations for coastal maritime weather patterns are recommended.
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.
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Recommended guides based on current conditions at KNRB
Official Data Sources
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.