Santarém in December
In December, Santarém averages 30°C (86°F) during the day and 25°C (77°F) at night, with frequent rain — about 25 days of the month see precipitation (286 mm total).
ShoulderConditions are warm and beach-friendly. Expect daily rain or showers, often in heavy bursts.
December offers comfortable temperatures in Santarém, with some rain to plan around.
How December compares to the rest of the year in Santarém
December is in the middle of the year for warmth in Santarém (5th of 12) and moderately rainy compared to the rest of the year (8th of 12). Daytime temperature matches the city's annual average. December runs 1°C cooler than November (31°C) and cools 1°C in January (29°C).
December sunrise & sunset in Santarém
Times shown for Santarém local time (America/Santarem), calculated for the 15th of December. They shift by a few minutes day to day across the month.
Photography light in Santarém — December
Golden-hour and blue-hour windows for the 15th of December, in Santarém's local time. Use these for soft warm light (golden) or cool architectural twilight (blue).
📅 When to book — Santarém in December
Travel writers usually only tell you when to go. Here's when to book flights and lodging for the best mix of price and availability, based on December's tier (Shoulder) and Santarém's popularity.
Crowds & pricing — December in Santarém
Santarém is in a shoulder season month — fewer crowds, slightly lower prices, and a calmer atmosphere than peak weeks. Most major sights stay open with normal hours, though a handful of seasonal restaurants or boat trips may run reduced schedules. Many regulars consider these months the best time to visit because you trade a small amount of weather reliability for a much more pleasant on-the-ground experience.
Sun & mosquito risk — December in Santarém
UV is a clear-sky sea-level estimate — clouds, altitude, and reflective surfaces (snow, water) shift it ±30%. Mosquito risk is climate-derived only; for current disease advisories (dengue, malaria, zika) check the CDC or WHO travel pages before your trip.
Santarém in other months
| Month | Avg high | Avg low | Rainfall | Rain days | Snow days |
|---|---|---|---|---|---|
| January | 29°C / 84°F | 25°C / 76°F | 371 mm | 30 | — |
| February | 29°C / 84°F | 24°C / 76°F | 427 mm | 28 | — |
| March | 29°C / 83°F | 24°C / 76°F | 505 mm | 31 | — |
| April | 29°C / 84°F | 24°C / 76°F | 453 mm | 30 | — |
| May | 29°C / 84°F | 25°C / 76°F | 362 mm | 31 | — |
| June | 29°C / 84°F | 25°C / 77°F | 177 mm | 29 | — |
| July | 29°C / 85°F | 25°C / 77°F | 120 mm | 27 | — |
| August | 31°C / 87°F | 26°C / 79°F | 63 mm | 20 | — |
| September | 32°C / 89°F | 26°C / 80°F | 50 mm | 18 | — |
| October | 32°C / 89°F | 27°C / 80°F | 76 mm | 20 | — |
| November | 31°C / 88°F | 26°C / 79°F | 169 mm | 22 | — |
| December | 30°C / 86°F | 25°C / 77°F | 286 mm | 25 | — |
Other cities with similar December weather
🌍 See the full ranked list of climate twins for Santarém in December →
Frequently asked questions
How hot is Santarém in December?
In December, Santarém averages a high of 30°C (86°F) and a low of 25°C (77°F) — generally hot.
Does it rain a lot in Santarém in December?
December is quite rainy in Santarém, with about 25 rainy days on average.
Is December a good time to visit Santarém?
December is hot but on the rainy side. It suits travelers who are comfortable with hot weather; check the month-by-month ranking to compare it against the rest of the year.
What should I pack for Santarém in December?
Pack lightweight, breathable clothing, sunglasses and sunscreen, plus a compact umbrella or rain jacket. See the full December packing list for Santarém for a complete, climate-based checklist.
Check the live 10-day forecast and sunrise/sunset.