A tropical air mass near the coast of Europe would typically move eastward due to the prevailing westerly winds in the region.
The west coast of Britain, particularly areas like the Lake District, Snowdonia, and western Scotland, are known to be the wettest due to prevailing westerly winds bringing moisture from the Atlantic Ocean. These regions experience high levels of rainfall throughout the year.
Perth is the most westerly capital city in Australia. Geraldton, a city also on the coast of Western Australia, is slightly further west than Perth.
Weather typically moves from west to east across the United States due to the prevailing westerly winds. This means that weather systems generally move from the west coast toward the east coast, affecting different regions as they move across the country.
The cool temperature along the West Coast is largely due to the cold ocean currents that flow southwards along the coast. Additionally, the marine layer, a thick fog that forms from the interaction of cold ocean water and warm air, also contributes to the cooler climate in this region. The prevailing westerly winds off the Pacific Ocean bring cooler air onto the coast, further lowering temperatures.
If you're in an airplane, it's because of prevailing winds.
Waves on the west coast of Ireland are generally stronger than those on the east coast due to the prevailing westerly winds and the exposure to the Atlantic Ocean. The west coast faces directly into the open ocean, allowing storms and swells to build up without interruption. In contrast, the east coast is more sheltered, facing the Irish Sea, which diminishes the strength of incoming waves. Additionally, the west coast's geographic features can amplify wave energy, contributing to more powerful surf conditions.
The Gulf Stream, it being in midlatitude, and westerly winds
Weather patterns in the US generally move from west to east due to the prevailing westerly winds at mid-latitudes. This means that weather systems typically move across the country from the west coast towards the east coast.
If you count the jet stream then the prevailing winds are from West to East making the the West coast the windward side. (This is of course given that the assumption is made over a period of time.) Not taking into account the jet stream, there have been numerious times when the honor has floated between each coast for prevailing winds. So the real question, does it really matter?
The west coast of Canada, particularly regions like the Pacific Northwest and Vancouver, receive the highest amount of rainfall due to their proximity to the Pacific Ocean and prevailing westerly winds. Conversely, the interior regions of Canada, such as the Prairie provinces, experience less rainfall due to a rain shadow effect caused by the Rocky Mountains.
When the eye of a hurricane reaches 43 degrees north latitude, it will likely be pushed eastward by the westerly winds in the mid-latitudes. This is because the prevailing winds at that latitude generally flow from west to east, steering the hurricane away from the coast.