Climate averages 1991–2020
Altamira weather
in October.
A hot, moderately wet month: the 2nd warmest and the 4th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
October is a hot month in Altamira: daytime highs average 33.0°C and nights cool to about 24.5°C. By daytime temperature it is the 2nd warmest of the 12 months.
Expect about 60 mm of rain on roughly 11 days, which makes October a moderately wet month (the 4th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 11 min on an average October day.
The nearest other city in this atlas is Breves (256 km away). In October its highs average 33.8°C, 0.8°C warmer than Altamira, with 33 mm of rain.
Among the 448 cities listed in Brazil, Altamira ranks joint 39th of 448 for the warmest October highs and joint 107th of 448 for the driest October (rainfall, lowest first). The mean October high of those 448 cities is 28.3°C; Altamira is 4.7°C warmer than that mean.
From October to November, average highs fall by 1.1°C to 31.9°C, and monthly rainfall rises from 60 mm to 100 mm.
The annual picture
October 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 | 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, selected | 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
October in nearby cities
- Breves in OctoberBrazil · 256 kmHigh 33.8°C · Low 24.7°C · 33 mm rain
- Tucuruí in OctoberBrazil · 287 kmHigh 32.9°C · Low 25.4°C · 65 mm rain
- Santarém in OctoberBrazil · 290 kmHigh 31.4°C · Low 26.5°C · 107 mm rain
- Cametá in OctoberBrazil · 319 kmHigh 33.6°C · Low 25.0°C · 34 mm rain
- Tailândia in OctoberBrazil · 362 kmHigh 34.5°C · Low 24.3°C · 33 mm rain
- Santana in OctoberBrazil · 370 kmHigh 32.3°C · Low 24.9°C · 18 mm rain
- Macapá in OctoberBrazil · 382 kmHigh 31.8°C · Low 25.0°C · 17 mm rain
- São Félix do Xingu in OctoberBrazil · 383 kmHigh 32.1°C · Low 23.4°C · 114 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.