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September in Santiago do Cacém brings high temperatures, with highs of 26°C (79°F) and nights dropping to 17°C (63°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 September →
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).
Warm but pleasant conditions in Santiago do Cacém in September. Focus on lightweight, maybe with natural fabrics, cotton blend shirts, comfortable shorts, and breathable footwear. A light cover-up for sun protection is smart too. Light rain is possible, so consider bringing a small umbrella or rain jacket. 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 September - average daytime high across popular destinations.
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