Warm-Water Currents and Climate Surface currents are often warmer than deep currents, but the temperatures of surface currents do vary. Coastal areas that are affected by warm-water currents tend to have warmer climates than inland areas of the same latitude have.ection 2 Currents and Climate Key Concept Ocean currents transport energy, affect climate and weather, and distribute nutrients. What You Will Learn • Surface currents affect climate by distributing energy around Earth.