Weather in Santarém for September 2026
Yellow High Temperature Warning - See hour by hour.
So far, September 2026 in Santarém shows a warmer trend than usual by 2.2 °C.
Expect cooler weather in the next days in Santarém with the forecast suggesting a temperature of 28.9 °C, lower than the historical average.
In general, the average temperature in Santarém at the beginning of September is 28.6 °C. As the month progressed, temperatures tended to moderately fall, reaching an average of 27.4 °C by the end of September.
With an average of 2 rainy days, Santarém experiences minimal rainfall in September.
Is September a good time to visit Santarém? check out the best time to travel to Santarém page.
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Santarém Weather September
Temperatures trend during September in Santarém
September weather in Santarém day by day
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. |  Overcast | 25° /14° | 0 mm | 6 | |
| 2 Sept. |  Fog | 28° /13° | 0 mm | 7 | |
| 3 Sept. |  Partly cloudy | 31° /15° | 0 mm | 7 | |
| 4 Sept. | Mist | 31° /16° | 0 mm | 5 | |
| 5 Sept. | Mist | 31° /15° | 0.1 mm | 7 | |
| 6 Sept. |  Sunny | 27° /13° | 0.2 mm | 7 | |
| 7 Sept. |  Patchy rain possible | 27° /13° | 0.3 mm | 6 | |
| 8 Sept. | Fog | 24° /13° | 0 mm | 5 | |
| 9 Sept. | Fog | 25° /13° | 0.2 mm | 5 | |
| 10 Sept. | Overcast | 26° /14° | 0.1 mm | 6 | |
| 11 Sept. | Overcast | 29° /13° | 0 mm | 6 | |
| 12 Sept. | Partly cloudy | 30° /15° | 0 mm | 7 | |
| 13 Sept. | Sunny | 31° /15° | 0 mm | 7 | |
| 14 Sept. | Sunny | 32° /17° | 0 mm | 7 | |
| 15 Sept. | Sunny | 30° /15° | 0 mm | 8 | |
| 16 Sept. | Sunny | 32° /15° | 0 mm | 7 | |
| 17 Sept. | Partly cloudy | 32° /15° | 0 mm | 7 | |
| 18 Sept. | Sunny | 32° /15° | 0 mm | 7 | |
| 19 Sept. | Mist | 30° /15° | 0 mm | 6 | |
| 20 Sept. | Patchy rain possible | 25° /14° | 0.1 mm | 6 | |
| 21 Sept. | Sunny | 35° /21° | 0 mm | 6.6 | |
| 22 Sept. | Sunny | 37° /21° | 0 mm | 6.2 | |
| 23 Sept. | Sunny | 36° /19° | 0 mm | 5.6 | |
| 24 Sept. | Sunny | 33° /16° | 0 mm | 6 | |
| 25 Sept. | Sunny | 27° /14° | 0 mm | 7 | |
| 26 Sept. | Overcast | 25° /14° | 0 mm | 6 | |
| 27 Sept. | Overcast | 24° /15° | 0 mm | 6 | |
| 28 Sept. | Sunny | 29° /14° | 0 mm | 7 | |
| 29 Sept. | Overcast | 24° /14° | 0 mm | 6 | |
| 30 Sept. | Overcast | 30° /13° | 0 mm | 7 | |
| Next | |||||
Santarém weather in September vs August vs October
| August | September | October | |
|---|---|---|---|
| Weather |  Cloudy | Cloudy | Patchy rain possible |
| Temperatures | 31°/15° | 26°/13° | 23°/14° |
| Rainfall | 0 mm | 13 mm | 78 mm |
| Wind | 21 km/h | 19.4 km/h | 16.5 km/h |
| Humidity | 62% | 62% | 72% |
| Rainy days | 0 days | 2 days | 14 days |
| Dry days | 31 days | 28 days | 17 days |
Planning a trip to Santarém? Discover the best time to visit
Santarém in September - FAQ
What are the expected maximum and minimum temperatures in Santarém during September?
How much rainfall should be expected in Santarém during September?
What are the typical wind conditions in Santarém during September?
UV exposure in Santarém during September
What to pack to Santarém in September?
Warm & sunny · highs around 26 °C, mostly dry
As you prepare for your trip to Santarém in September, it's important to consider the typical weather patterns for the time of year. Below is a carefully tailored packing list to ensure that your time in Santarém, during September, is comfortable and enjoyable, regardless of the weather conditions.
🧥 Clothing
🎒 Accessories
🧴 Personal Items
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Where is Santarém?Get accurate weather forecasts for Santarém, located at latitude 39.621 and longitude -8.652. Stay updated with localized weather information tailored for Santarém.