São José de Ribamar climate
São José de Ribamar (Maranhão, Brazil) has a tropical savanna (dry summer) climate (Köppen As). The average temperature over the year is 27 °C81 °F, and about 1,511 mm60 in of precipitation falls in an average year.
Temperature by month
Precipitation by month
São José de Ribamar climate table
| Month | High °C°F | Low °C°F | Mean °C°F | Precip. mmin |
|---|---|---|---|---|
| Jan | 3087 | 2476 | 2781 | 1726.8 |
| Feb | 3085 | 2476 | 2780 | 2349.2 |
| Mar | 2985 | 2476 | 2780 | 28711 |
| Apr | 2984 | 2476 | 2780 | 31913 |
| May | 3085 | 2476 | 2781 | 2088.2 |
| Jun | 3086 | 2475 | 2780 | 1194.7 |
| Jul | 3086 | 2475 | 2780 | 692.7 |
| Aug | 3188 | 2474 | 2781 | 150.6 |
| Sep | 3290 | 2475 | 2882 | 200.8 |
| Oct | 3290 | 2476 | 2883 | 150.6 |
| Nov | 3290 | 2577 | 2883 | 130.5 |
| Dec | 3289 | 2577 | 2883 | 421.6 |
| Year | 3290 | 2474 | 2781 | 1,51160 |
“Year” row: highest monthly high, lowest monthly low, annual mean and annual total.
| Month | Humid. | Cloud | Solar | Daylight |
|---|---|---|---|---|
| Jan | 80% | 73% | 4.9 | 12:15 |
| Feb | 84% | 81% | 4.8 | 12:12 |
| Mar | 86% | 82% | 4.7 | 12:08 |
| Apr | 88% | 82% | 4.6 | 12:03 |
| May | 87% | 67% | 4.8 | 12:00 |
| Jun | 84% | 50% | 5.0 | 11:58 |
| Jul | 81% | 38% | 5.2 | 11:59 |
| Aug | 77% | 26% | 5.8 | 12:02 |
| Sep | 73% | 25% | 6.0 | 12:06 |
| Oct | 71% | 34% | 6.0 | 12:10 |
| Nov | 72% | 46% | 5.7 | 12:14 |
| Dec | 74% | 58% | 5.3 | 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 São José de Ribamar is like
The warmest month is November, with an average high of 32 °C90 °F and a low of 25 °C77 °F. The coldest is April, when highs average 29 °C84 °F and lows 24 °C76 °F. Temperatures barely change through the year: the warmest and the coolest month differ by only 1.7 °C3.1 °F.
It is wet, with about 1,511 mm60 in of precipitation per year. The wettest three-month stretch is February–April, which brings 56% of the annual total. Months with less than 20 mm0.8 in on average: August–November. The wettest month is April (319 mm13 in), the driest is November (13 mm0.5 in).
Relative humidity ranges from 71% in October to 88% in April. The clearest skies (lowest average cloud amount, 25%) are typical of September. Average wind speed near the ground ranges from 5 km/h (3 mph) in April to 7 km/h (4 mph) in November.
Best time to visit São José de Ribamar
Based on these averages, the most comfortable months for sightseeing and outdoor activities are July–December: average highs of 30 °C86 °F to 32 °C90 °F with 13 mm0.5 in to 69 mm2.7 in of precipitation per month.
The most challenging month is April, which is very wet (319 mm13 in) and humid (88% relative humidity).
Comfort score: months are ranked by how close they come to 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 São José de Ribamar
- Wetter months (January–May) — highs 2984 to 30 °C87 °F, lows around 24 °C76 °F, about 244 mm9.6 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 3086 to 32 °C90 °F, lows 2474 to 25 °C77 °F, about 42 mm1.6 in of precipitation a month. Pack very light, breathable clothing, a sun hat and plenty of water.
How São José de Ribamar compares
Compared with São Luís, about 27 km to the west, São José de Ribamar is on average 0.4 °C0.6 °F warmer and receives 12% less precipitation (1,511 mm60 in vs 1,717 mm68 in). The difference is largest in April (0.5 °C0.9 °F warmer).
Of the 223 places in Brazil covered by World Climates, São José de Ribamar is the 15th warmest by annual mean temperature and the 53rd wettest by annual precipitation. See all of them on the Brazil climate page.
Places in other countries with the most similar temperature and rainfall pattern (seasons shifted for the other hemisphere where needed): Quevedo (Ecuador, Aw), Saipan (Northern Mariana Islands, Aw) and Hagåtña (Guam, Am).
Nearby places
- São Luís 27 km · 27 °C81 °F · 1,717 mm68 in
- Bacabal 203 km · 28 °C82 °F · 1,513 mm60 in
- Codó 212 km · 28 °C82 °F · 1,381 mm54 in
- Parnaíba 257 km · 28 °C82 °F · 1,102 mm43 in
- Caxias 268 km · 28 °C83 °F · 1,278 mm50 in
- Timon 313 km · 28 °C83 °F · 1,278 mm50 in
- Teresina 314 km · 29 °C83 °F · 1,201 mm47 in
- Bragança 344 km · 27 °C80 °F · 2,499 mm98 in
Frequently asked questions
What is the warmest month in São José de Ribamar?
November is the warmest month in São José de Ribamar, with an average high of 32 °C (90 °F) and an average low of 25 °C (77 °F).
What is the coldest month in São José de Ribamar?
April is the coldest month, with an average high of 29 °C (84 °F) and an average low of 24 °C (76 °F).
When does it rain the most in São José de Ribamar?
April is the wettest month with about 319 mm (12.6 in) of precipitation; November is the driest with about 13 mm (0.5 in).
What is the best time to visit São José de Ribamar?
Judging by long-term averages, the most comfortable months are July–December.
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 — most of all 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.