What components should be considered when evaluating weather before a dive?

• A. Wind speed alone.
• B. Wind and current strength.
• C. Wave height only.
• D. Wind, wave height, current strength, visibility, and changes during the dive.

Answer: (D)

Evaluating weather before a dive means looking at multiple environmental factors that can affect surface conditions, navigation, and safety. Wind influences surface drift, comfort, and the generation of waves that impact entry, exit, and visibility. Wave height matters because larger waves create surge and churn, which can make descent, ascent, and maintaining position more difficult. Current strength is important since underwater currents can push you off course, affect your ability to stay with your plan, and influence air consumption by requiring more effort. Visibility is crucial for reading the surroundings, avoiding hazards, and staying close to your buddy and known features. Changes during the dive, such as shifting winds, tides, or approaching weather, can quickly modify all of these factors, so planning must include contingencies for worsening conditions or a potential abort. Focusing on only one factor misses how these elements interact and evolve, which is essential for a safe dive.