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January in Sesimbra typically sees daytime highs of 16°C (61°F) and nighttime lows of 11°C (52°F). Rainfall is also possible this month, so it's worth packing an umbrella.
January in Sesimbra has its charm. However, if you're seeking pleasant, dry and sunny weather, our weather planner can help you explore other destinations in the world.
Pick a month to see the average temperature, rainfall and sunshine in Sesimbra - and find the best time to visit.
50-year average (1976-2026)
Based on our historical records, temperatures in Sesimbra typically stay consistent throughout January, with daily highs averaging around 16°C (61°F). Nights are cold, with lows around 8°C (46°F).
50-year average (1976-2026)
Average daily rainfall for each day of the month based on long-term records.
Browse day-by-day weather records for Sesimbra spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Our historical data for Sesimbra spans 2000 to 2025, revealing these weather extremes.
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).
The weather can swing between comfortable and chilly in January, so flexibility is key. Pack a variety of tops, at least one warm layer, and both shorts and long pants. This gives you options no matter what the day brings. Wet weather is likely, so pack waterproof gear for multiple rainy days. Sunglasses could come in handy during the sunnier parts of your trip.
We rated the following activities from 1 (least suitable) to 10 (best) to do.
See the full Sesimbra climate overview or explore weather in Portugal.
Where to go in January - average daytime high across popular destinations.
Need travel inspiration? Check out our bucket list articles and be inspired.
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