May in Portugal typically offers pleasant spring weather, transitioning from the cooler, wetter months to the hotter, drier summer season. Temperatures generally range from comfortable daytime highs in the high teens to low twenties Celsius (mid-60s to low 70s Fahrenheit) and cooler evenings. While sunshine is prevalent, some rainfall is still possible in May, particularly in the northern regions. Coastal areas are generally moderated by the Atlantic Ocean, while inland regions can experience more significant temperature fluctuations.
Understanding typical climate conditions for this period is valuable for travelers planning trips to Portugal. Informed travelers can pack appropriately, anticipate potential weather variations, and choose activities suitable for the expected conditions. This knowledge facilitates better trip planning, contributing to a more enjoyable and less stressful travel experience. Historical weather data from previous Mays provides a helpful reference point, though it’s important to note that weather patterns can vary from year to year.