Air Temp Maps

Air Temp Maps are marine forecast layers that display expected air temperature across coastal and offshore waters, usually as colour-shaded map fields from numerical weather models. They help skippers see where warmer or cooler air masses, fronts, and local land-sea effects may influence conditions around a route, anchorage, or harbour approach.

For passage planning, air temperature affects crew clothing, watchkeeping, condensation, fog risk, and the comfort of exposed helms. Sharp gradients can signal changing weather, especially when read with pressure, wind, cloud, and rain forecasts. Compare air temperature with Temperature, monitor visibility threats such as Fog, and factor expected changes into Weather Routing before committing to a departure window.

PredictWind displays air temperature maps in the Forecast App and web forecasts, and temperature data can be downloaded as part of offshore weather packages where available. Reviewing successive frames helps identify trends rather than isolated values, alongside wind, wave, rain, and GRIB data from models such as ECMWF, GFS, and ICON.