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January in Santiago do Cacém brings moderate temperatures around 16°C (61°F) during the day, dropping to 8°C (46°F) at night, with quite a bit of rainfall expected, averaging around 64 mm (2.5 in) for the month.
If you prefer dry days with pleasant temperatures, January may not be the ideal month to visit Santiago do Cacém. Our weather planner can help you explore destinations with more pleasant weather conditions.
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 January →
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).
Pack for changing conditions in Santiago do Cacém in January. Bring a mix of short and long sleeves, a warm layer like a hoodie or light jacket, and comfortable pants. The key is being able to add or remove layers as the days goes by. Rain gear is recommended, you can expect wet weather on multiple days. It won't hurt to bring your sunglasses along, as you'll see some sunny periods.
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 January - average daytime high across popular destinations.
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