Weather in Santarém for September 2025
Yellow Heat Warning - See hour by hour.
Until now, September 2025 in Santarém has been nearly identical to the historical average, with a temperature of 25.4 °C (showing only a slight deviation of -0.4 °C).
The forecast for the upcoming days in Santarém predicts a temperature of 27.1 °C, which is slightly above the historical average.
In general, the average temperature in Santarém at the beginning of September is 26 °C. As the month progressed, temperatures tended to moderately fall, reaching an average of 25 °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° | 0.1 mm | 6 | |
| 2 Sept. |  Fog | 25° /13° | 0 mm | 6 | |
| 3 Sept. |  Partly cloudy | 26° /13° | 0 mm | 7 | |
| 4 Sept. | Mist | 28° /13° | 0 mm | 7 | |
| 5 Sept. | Mist | 28° /12° | 0 mm | 6 | |
| 6 Sept. |  Sunny | 25° /12° | 0.2 mm | 6 | |
| 7 Sept. |  Patchy rain possible | 25° /13° | 0.4 mm | 6 | |
| 8 Sept. | Fog | 23° /12° | 0 mm | 6 | |
| 9 Sept. | Fog | 24° /13° | 0 mm | 6 | |
| 10 Sept. | Overcast | 24° /14° | 0.2 mm | 6 | |
| 11 Sept. | Overcast | 28° /13° | 0 mm | 6 | |
| 12 Sept. | Partly cloudy | 26° /14° | 0 mm | 7 | |
| 13 Sept. | Mist | 28° /13° | 0 mm | 7 | |
| 14 Sept. | Sunny | 30° /16° | 0 mm | 7 | |
| 15 Sept. | Sunny | 29° /14° | 0 mm | 1.6 | |
| 16 Sept. | Sunny | 33° /13° | 0 mm | 1.5 | |
| 17 Sept. | Sunny | 34° /14° | 0 mm | 1.6 | |
| 18 Sept. | Sunny | 34° /17° | 0 mm | 1.5 | |
| 19 Sept. | Patchy rain possible | 31° /20° | 0.5 mm | 1.1 | |
| 20 Sept. | Patchy rain possible | 29° /17° | 3 mm | 5 | |
| 21 Sept. | Sunny | 25° /14° | 0 mm | 5 | |
| 22 Sept. | Sunny | 22° /14° | 0 mm | 5 | |
| 23 Sept. | Partly cloudy | 22° /11° | 0 mm | 5 | |
| 24 Sept. | Sunny | 24° /12° | 0 mm | 5 | |
| 25 Sept. | Sunny | 25° /13° | 0 mm | 5 | |
| 26 Sept. | Sunny | 26° /13° | 0 mm | 5 | |
| 27 Sept. | Patchy rain possible | 21° /18° | 1.7 mm | 4 | |
| 28 Sept. | Patchy rain possible | 25° /18° | 1.2 mm | 5 | |
| 29 Sept. | Sunny | 26° /13° | 0 mm | 7 | |
| 30 Sept. | Sunny | 28° /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°/14° | 22°/13° |
| Rainfall | 0 mm | 11 mm | 88 mm |
| Wind | 21.6 km/h | 19.3 km/h | 17.5 km/h |
| Humidity | 67% | 63% | 79% |
| Rainy days | 0 days | 2 days | 13 days |
| Dry days | 31 days | 28 days | 18 days |
Planning a trip to Santarém? Discover the best time to visit
Santarém in September - FAQ
What to pack to Santarém in September?
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
- Lightweight Clothing: T-shirts, blouses, shorts, skirts
- Accessories
- Sunglasses: For sun protection
- Sun Hats: Wide-brimmed hats for sun protection in warm weather
- Scarves: To protect you from the cold wind
- Gloves/Mittens: Essential for cold weather
- Warm Hats: Warm hats for insulation in cold weather
- Personal Items
- Sunscreen: High SPF for sunny destinations
- Lip Balm with SPF: To protect against chapped lips
September rainfall patterns in Santarém
UV exposure in Santarém during September
Quick links
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.