Climate averages 1991–2020
Altamira weather
in March.
A hot, very wet month: one of the coolest and the wettest of the year.
Long-term climate patterns, not a forecast for a particular trip.
March is a hot month in Altamira: daytime highs average 28.5°C and nights cool to about 22.9°C. By daytime temperature it is one of the coolest months of the year.
Expect about 328 mm of rain on roughly 29 days, which makes March a very wet month (the wettest month of the year). Daylight, from sunrise to sunset, lasts about 12 h 08 min on an average March day.
The nearest other city in this atlas is Breves (256 km away). In March its highs average 29.0°C, about as warm as Altamira, with 397 mm of rain.
Among the 448 cities listed in Brazil, Altamira ranks joint 182nd of 448 for the warmest March highs and joint 416th of 448 for the driest March (rainfall, lowest first). The mean March high of those 448 cities is 27.9°C; Altamira is 0.6°C warmer than that mean.
From March to April, average highs stay level at 28.5°C, and monthly rainfall falls from 328 mm to 280 mm.
The annual picture
March 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
Altamira climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 28.9°C23.0°C | 23.0°C | 248 | 28.1 | 12.312 h |
| February | 28.5°C22.9°C | 22.9°C | 276 | 26.8 | 12.212 h |
| March, selected | 28.5°C22.9°C | 22.9°C | 328 | 29.1 | 12.112 h |
| April | 28.5°C23.0°C | 23.0°C | 280 | 28.2 | 12.012 h |
| May | 28.8°C23.1°C | 23.1°C | 190 | 26.1 | 12.012 h |
| June | 29.2°C22.9°C | 22.9°C | 71 | 16.5 | 11.912 h |
| July | 30.0°C22.8°C | 22.8°C | 46 | 10.1 | 12.012 h |
| August | 32.1°C23.5°C | 23.5°C | 31 | 7.1 | 12.012 h |
| September | 33.1°C24.2°C | 24.2°C | 34 | 7.0 | 12.112 h |
| October | 33.0°C24.5°C | 24.5°C | 60 | 11.1 | 12.212 h |
| November | 31.9°C24.3°C | 24.3°C | 100 | 14.9 | 12.312 h |
| December | 30.4°C23.8°C | 23.8°C | 152 | 21.9 | 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
March in nearby cities
- Breves in MarchBrazil · 256 kmHigh 29.0°C · Low 23.3°C · 397 mm rain
- Tucuruí in MarchBrazil · 287 kmHigh 29.0°C · Low 23.7°C · 409 mm rain
- Santarém in MarchBrazil · 290 kmHigh 28.3°C · Low 24.5°C · 488 mm rain
- Cametá in MarchBrazil · 319 kmHigh 28.9°C · Low 23.6°C · 459 mm rain
- Tailândia in MarchBrazil · 362 kmHigh 29.4°C · Low 22.7°C · 396 mm rain
- Santana in MarchBrazil · 370 kmHigh 28.4°C · Low 23.3°C · 335 mm rain
- Macapá in MarchBrazil · 382 kmHigh 28.1°C · Low 23.4°C · 387 mm rain
- São Félix do Xingu in MarchBrazil · 383 kmHigh 28.5°C · Low 22.4°C · 319 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 Altamira) is explained once on the Altamira year overview and on the Sources, method and limits page.