Santarém climate
Santarém (Pará, Brazil) has a tropical monsoon climate (Köppen Am). The average temperature over the year is 28 °C82 °F, and about 1,920 mm76 in of precipitation falls in an average year.
Temperature by month
Precipitation by month
Santarém climate table
| Month | High °C°F | Low °C°F | Mean °C°F | Precip. mmin |
|---|---|---|---|---|
| Jan | 3085 | 2577 | 2781 | 2098.2 |
| Feb | 2882 | 2576 | 2679 | 27711 |
| Mar | 2882 | 2576 | 2679 | 32713 |
| Apr | 2781 | 2577 | 2679 | 32113 |
| May | 2882 | 2577 | 2679 | 2399.4 |
| Jun | 2882 | 2576 | 2679 | 1244.9 |
| Jul | 2883 | 2577 | 2680 | 933.7 |
| Aug | 3086 | 2578 | 2882 | 451.8 |
| Sep | 3290 | 2679 | 2985 | 361.4 |
| Oct | 3493 | 2781 | 3087 | 542.1 |
| Nov | 3392 | 2781 | 3086 | 702.8 |
| Dec | 3189 | 2679 | 2984 | 1254.9 |
| Year | 3493 | 2576 | 2882 | 1,92076 |
“Year” row: highest monthly high, lowest monthly low, annual mean and annual total.
| Month | Humid. | Cloud | Solar | Daylight |
|---|---|---|---|---|
| Jan | 78% | 81% | 4.8 | 12:15 |
| Feb | 85% | 84% | 4.7 | 12:11 |
| Mar | 87% | 86% | 4.8 | 12:08 |
| Apr | 88% | 85% | 4.7 | 12:04 |
| May | 88% | 76% | 4.6 | 12:00 |
| Jun | 87% | 63% | 4.9 | 11:59 |
| Jul | 86% | 58% | 5.2 | 11:59 |
| Aug | 80% | 53% | 5.7 | 12:02 |
| Sep | 70% | 59% | 5.8 | 12:06 |
| Oct | 64% | 70% | 5.6 | 12:10 |
| Nov | 65% | 78% | 5.2 | 12:14 |
| Dec | 71% | 78% | 4.9 | 12:16 |
Humid. = average relative humidity at 2 m; cloud = average cloud amount; solar = average daily solar energy reaching the ground in kWh/m² (all-sky); daylight in hours:minutes, calculated for the 15th of each month.
What the climate of Santarém is like
The warmest month is October, with an average high of 34 °C93 °F and a low of 27 °C81 °F. The coldest is April, when highs average 27 °C81 °F and lows 25 °C77 °F. Seasonal differences are small — just 4.3 °C7.8 °F between the warmest and the coolest month.
It is wet, with about 1,920 mm76 in of precipitation per year. The wettest three-month stretch is February–April, which brings 48% of the annual total. The wettest month is March (327 mm13 in), the driest is September (36 mm1.4 in).
Relative humidity ranges from 64% in October to 88% in May. The clearest skies (lowest average cloud amount, 53%) are typical of August. Average wind speed near the ground ranges from 4 km/h (3 mph) in April to 5 km/h (3 mph) in September.
Best time to visit Santarém
Based on these averages, the most comfortable months for sightseeing and outdoor activities are July and August. Average highs then reach 28 °C83 °F to 30 °C86 °F. Precipitation is 45 mm1.8 in to 93 mm3.7 in per month.
The most challenging month is March, which is very wet (327 mm13 in) and humid (87% relative humidity).
Comfort score: months are ranked by how close they come to an ideal. That means an average high of 21–28 °C (70–82 °F), lows above 5 °C (41 °F), little precipitation and moderate humidity. The best-ranked months of each place are recommended, even where none meets all of these. These are general rules of thumb applied to long-term averages.
What to pack for Santarém
- Wetter months (January–May) — highs 2781 to 30 °C85 °F, lows around 25 °C76 °F, about 275 mm11 in of precipitation a month. Pack light summer clothes such as T-shirts, shorts or light dresses and a good rain jacket or umbrella and quick-drying shoes.
- Drier months (June–December) — highs 2882 to 34 °C93 °F, lows 2576 to 27 °C81 °F, about 78 mm3.1 in of precipitation a month. Pack very light, breathable clothing, a sun hat and plenty of water.
How Santarém compares
World Climates covers 223 places in Brazil. By annual mean temperature, Santarém is the 14th warmest of them. By annual precipitation, it is the 14th wettest. See all of them on the Brazil climate page.
Some places in other countries have a very similar pattern of temperature and rainfall (with seasons shifted for the other hemisphere). The closest matches are Himamaylan (Philippines, Af), Kabankalan (Philippines, Af) and Bayawan (Philippines, Af).
Nearby places
- Climate in Parintins 226 km · 28 °C82 °F · 2,087 mm82 in
- Climate in Itaituba 248 km · 27 °C81 °F · 1,963 mm77 in
- Climate in Altamira 290 km · 26 °C80 °F · 1,896 mm75 in
- Climate in Itacoatiara 422 km · 27 °C81 °F · 2,077 mm82 in
- Climate in Santana 475 km · 27 °C80 °F · 2,068 mm81 in
- Climate in Breves 477 km · 27 °C80 °F · 2,418 mm95 in
- Climate in Macapá 490 km · 27 °C80 °F · 2,068 mm81 in
- Climate in São Félix do Xingu 556 km · 27 °C80 °F · 1,648 mm65 in
Frequently asked questions
What is the warmest month in Santarém?
October is the warmest month in Santarém. Its average high is 34 °C (93 °F) and its average low is 27 °C (81 °F).
What is the coldest month in Santarém?
April is the coldest month. Its average high is 27 °C (81 °F) and its average low is 25 °C (77 °F).
When does it rain the most in Santarém?
March is the wettest month with about 327 mm (12.9 in) of precipitation. September is the driest with about 36 mm (1.4 in).
What is the best time to visit Santarém?
Judging by long-term averages, the most comfortable months are July and August.
About this data
All figures are 25-year averages (January 2001 – December 2025) from the NASA POWER project. Temperature, humidity, wind and precipitation come from the MERRA-2 reanalysis (precipitation is the bias-corrected MERRA-2 product), cloud and solar values from CERES satellite data. They describe a grid cell of roughly 50–70 km, not a single weather station. So they can differ from airport records. The gaps are largest on coasts, in mountains and for rainfall. Average highs and lows are the monthly mean temperature plus/minus half of the average daily temperature range. Counts of rainy days are not part of this dataset.