United States · elevation 47 ft AMSL
· 48.3518, -122.6560
Whidbey Island Naval Air Station (Ault Field) (Oak Harbor) is an airport with the ICAO code KNUW and the IATA code NUW. Country: United States. Nearest settlement listed in the database: Oak Harbor. OurAirports classifies it as a medium-sized airport. Its ICAO code starts with the KN prefix, which marks airports in United States. The four-letter code KNUW is used in flight operations and weather reports, while the three-letter IATA code NUW is used for ticketing and baggage handling. The airport reference point sits at 48°21'06"N, 122°39'22"W, at an elevation of 47 ft (14 m) above sea level. The applicable time zone is America/Los_Angeles.
Aerial imagery showing the runway and apron layout - the zoom is matched to the longest runway.
| Threshold | Course | Length | Width | Surface |
|---|---|---|---|---|
| 07 | 70° | 2,438 m (7,999 ft) | 61 m (200 ft) | asphalt |
| 25 | 250° | |||
| 14 | 140° | 2,439 m (8,001 ft) | 61 m (200 ft) | asphalt |
| 32 | 320° |
The course is derived from the runway designator (number × 10), not from a survey - the actual magnetic bearing can differ by a few degrees.
Declared distances (TORA, TODA, ASDA, LDA) are published in the national AIP - they are not part of this table.
What the METAR reports from KNUW for 2023-2025 show - counted hour by hour.
We computed these statistics from 26,118 METAR reports issued by KNUW in 2023-2025. VFR conditions prevailed 77% of the time, MVFR 18% and IFR or LIFR 5%. Best month for VFR flying: July (85% of hours VFR). Most IFR and LIFR hours: September (12%).
Through the day, IFR or LIFR conditions are most frequent around 14:00 UTC (11% of reports at that hour) and least frequent around 23:00 UTC (2%).
Fog (FG) was reported on 30 days a year on average, most often in September. Thunderstorms (TS) occurred on 1.7 days a year on average, and snowfall on 8.4.
The wind most often blows from W (270°) - 13% of reports. Calm (0 kt) made up 12% of reports, and gusts of 25 kt or more appeared in 10%. Warmest month: August (average high 19.9 °C); coldest: January (average low 2.5 °C).
Day counts are for the selected period (for all years - the yearly average).
The top of each bar is the average daily high, the bottom the average daily low (usually around dawn), in °C.
Most often: W - 13% of reports. Each petal shows the direction the wind blows from (as in METAR) - the longer it is, the more often. Colour shows wind speed.
| Month | Avg high °C | Avg low °C | VFR | IFR/LIFR | Fog days | Thunderstorm days | Snow days |
|---|---|---|---|---|---|---|---|
| January | 8.2 | 2.5 | 70% | 7% | 2 | 0 | 1.3 |
| February | 8.5 | 2.7 | 73% | 3% | 1.3 | 0 | 4.7 |
| March | 10.8 | 4.3 | 76% | 3% | 2 | 0.3 | 1.7 |
| April | 12.9 | 5.9 | 82% | 1% | 0.7 | 0 | 0 |
| May | 15.4 | 8.7 | 84% | 3% | 1 | 0 | 0 |
| June | 16.9 | 9.8 | 83% | 4% | 2 | 0 | 0 |
| July | 19.0 | 11.7 | 85% | 6% | 3 | 0 | 0 |
| August | 19.9 | 12.4 | 80% | 7% | 5 | 1 | 0 |
| September | 17.8 | 10.9 | 75% | 12% | 5.7 | 0 | 0 |
| October | 14.3 | 7.5 | 79% | 4% | 2.7 | 0.3 | 0 |
| November | 10.7 | 5.2 | 73% | 3% | 1.3 | 0 | 0 |
| December | 9.7 | 5.0 | 64% | 7% | 3 | 0 | 0.7 |
Temperatures are averages of daily highs and lows. Day counts are the average per month over the period.
According to OurAirports data (compiled from AIP and FAA sources), Whidbey Island Naval Air Station (Ault Field) (Oak Harbor) has 2 runways: 07/25 - 2,438 m long (7,999 ft), 61 m wide, asphalt surface; 14/32 - 2,439 m long (8,001 ft), 61 m wide, asphalt surface.
The longest of them is 14/32, at 2,439 m.
The thresholds are oriented as follows: 07/25 on 70° and 250° magnetic, 14/32 on 140° and 320° magnetic. A threshold designator is its magnetic heading divided by ten (ICAO Annex 14), so the runway axis can be read straight off the numbers.
For the 07/25 axis, wind from the south (around 160°) or from the north (around 340°) blows perpendicular to the runway and produces the largest crosswind component. Wind from around 70° or 250° acts along the runway, as a headwind or a tailwind. The decoder on this page computes those components automatically from the current METAR.
Weather reports for Whidbey Island Naval Air Station (Ault Field) (Oak Harbor) are published under the ICAO code KNUW. A METAR is an observation of current conditions, usually issued every 30 or 60 minutes; a TAF is a forecast for the airport area, typically covering 9 to 30 hours.
The decoder breaks the KNUW report down into its parts: wind direction and speed including gusts and variability, visibility (including CAVOK and directional minimum visibility), weather phenomena by WMO code, cloud layers with their bases, temperature and dew point, QNH pressure, and the resulting flight category - VFR, MVFR, IFR or LIFR - using FAA thresholds.
Not every airport issues its own reports; many smaller airfields have no weather station. If no current data is available for KNUW, check the nearby airports listed below.
Reports always use UTC (the Z suffix). The America/Los_Angeles zone is GMT-08:00 in winter and GMT-07:00 in summer - that is the shift to apply to the time in the report to get local time at the airport.
The closest airports in the database, measured in a straight line from the reference point, are AJ Eisenberg Airport (Oak Harbor) (KOKH, 11 km), Coupeville Nolf Airport (KNRA, 18 km), Skagit Regional Airport (Burlington) (KBVS, 22 km). When no report is available for KNUW, they usually give the best approximation of conditions in the area.
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The METAR archive for KNUW goes back to 01/04/1945. Pick a date and see every observation from that day.
Run a flying club, a training organisation or an airfield website? Embed a ready-made panel with the current KNUW METAR - flight category, wind, visibility, temperature and pressure, refreshed automatically. The configurator lets you pick language, theme and units; you paste the code once.
