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May in Santiago do Cacém brings high temperatures, with highs of 23°C (73°F) and nights dropping to 14°C (57°F). With excellent weather conditions overall, it's a good time to visit.
So this is a great month to visit if you prefer dry days with pleasant temperatures.
Pick a month to see the average temperature, rainfall and sunshine in Santiago do Cacém - and find the best time to visit.
Find out more about the weather in Portugal and which places have the best travel conditions in this month. See all of Portugal in May →
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
Comfortable temperatures call for an easy wardrobe in May. Pack summer basics like t-shirts and shorts, but include a light jacket for cooler moments. A pair of comfortable walking shoes is essential. Wet weather is likely, so pack waterproof gear for multiple rainy days. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Temperature Rainfall Sunshine Humidity
See the full Santiago do Cacém climate overview or explore weather in Portugal.
Where to go in May - average daytime high across popular destinations.
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