Climate averages 1991–2020
São José de Ribamar weather
in January.
A hot, very wet month: the 9th warmest and the 8th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
January is a hot month in São José de Ribamar: daytime highs average 28.4°C and nights cool to about 25.0°C. By daytime temperature it is the 9th warmest of the 12 months.
Expect about 229 mm of rain on roughly 25 days, which makes January a very wet month (the 8th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 15 min on an average January day.
The nearest other city in this atlas is São Luís (27 km away). In January its highs average 29.0°C, 0.6°C warmer than São José de Ribamar, with 221 mm of rain.
Among the 448 cities listed in Brazil, São José de Ribamar ranks joint 233rd of 448 for the warmest January highs and joint 233rd of 448 for the driest January (rainfall, lowest first). The mean January high of those 448 cities is 28.5°C; São José de Ribamar is 0.1°C cooler than that mean.
From January to February, average highs fall by 0.4°C to 28.0°C, and monthly rainfall rises from 229 mm to 319 mm.
The annual picture
January in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
São José de Ribamar climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January, selected | 28.4°C25.0°C | 25.0°C | 229 | 25.4 | 12.212 h |
| February | 28.0°C24.7°C | 24.7°C | 319 | 26.2 | 12.212 h |
| March | 27.9°C24.6°C | 24.6°C | 452 | 30.2 | 12.112 h |
| April | 28.1°C24.6°C | 24.6°C | 437 | 28.7 | 12.112 h |
| May | 28.6°C25.0°C | 25.0°C | 292 | 26.5 | 12.012 h |
| June | 28.9°C25.1°C | 25.1°C | 146 | 21.8 | 12.012 h |
| July | 29.1°C25.2°C | 25.2°C | 94 | 18.4 | 12.012 h |
| August | 29.8°C25.6°C | 25.6°C | 25 | 7.5 | 12.012 h |
| September | 30.1°C25.8°C | 25.8°C | 11 | 2.8 | 12.112 h |
| October | 30.0°C25.9°C | 25.9°C | 15 | 3.7 | 12.212 h |
| November | 29.7°C26.0°C | 26.0°C | 28 | 6.3 | 12.212 h |
| December | 29.3°C25.8°C | 25.8°C | 75 | 15.0 | 12.312 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
January in nearby cities
- São Luís in JanuaryBrazil · 27 kmHigh 29.0°C · Low 24.7°C · 221 mm rain
- Pinheiro in JanuaryBrazil · 114 kmHigh 30.4°C · Low 23.8°C · 196 mm rain
- Chapadinha in JanuaryBrazil · 153 kmHigh 31.0°C · Low 23.5°C · 198 mm rain
- Santa Inês in JanuaryBrazil · 192 kmHigh 30.2°C · Low 23.6°C · 253 mm rain
- Bacabal in JanuaryBrazil · 203 kmHigh 30.3°C · Low 23.5°C · 249 mm rain
- Codó in JanuaryBrazil · 212 kmHigh 30.4°C · Low 23.2°C · 226 mm rain
- Parnaíba in JanuaryBrazil · 257 kmHigh 30.1°C · Low 24.9°C · 129 mm rain
- Caxias in JanuaryBrazil · 268 kmHigh 30.4°C · Low 23.1°C · 236 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for São José de Ribamar) is explained once on the São José de Ribamar year overview and on the Sources, method and limits page.