Climate averages 1991–2020
Castanhal weather
in July.
A hot, wet month: the 6th warmest and the 5th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
July is a hot month in Castanhal: daytime highs average 30.0°C and nights cool to about 22.6°C. By daytime temperature it is the 6th warmest of the 12 months.
Expect about 91 mm of rain on roughly 18 days, which makes July a wet month (the 5th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 03 min on an average July day.
The nearest other city in this atlas is Santa Isabel do Pará (26 km away). In July its highs average 30.0°C, about as warm as Castanhal, with 97 mm of rain.
Among the 448 cities listed in Brazil, Castanhal ranks joint 57th of 448 for the warmest July highs and joint 348th of 448 for the driest July (rainfall, lowest first). The mean July high of those 448 cities is 24.7°C; Castanhal is 5.3°C warmer than that mean.
From July to August, average highs rise by 1.2°C to 31.2°C, and monthly rainfall falls from 91 mm to 51 mm.
The annual picture
July 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
Castanhal climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 29.8°C23.3°C | 23.3°C | 269 | 27.0 | 12.212 h |
| February | 29.0°C23.0°C | 23.0°C | 357 | 27.2 | 12.212 h |
| March | 28.9°C22.9°C | 22.9°C | 456 | 30.5 | 12.112 h |
| April | 28.9°C23.0°C | 23.0°C | 427 | 29.6 | 12.112 h |
| May | 29.4°C23.0°C | 23.0°C | 278 | 27.7 | 12.112 h |
| June | 29.7°C22.7°C | 22.7°C | 120 | 21.4 | 12.012 h |
| July, selected | 30.0°C22.6°C | 22.6°C | 91 | 18.1 | 12.112 h |
| August | 31.2°C23.0°C | 23.0°C | 51 | 12.7 | 12.112 h |
| September | 32.3°C23.4°C | 23.4°C | 34 | 8.6 | 12.112 h |
| October | 33.1°C23.7°C | 23.7°C | 34 | 8.0 | 12.112 h |
| November | 32.9°C24.0°C | 24.0°C | 49 | 8.7 | 12.212 h |
| December | 31.8°C24.0°C | 24.0°C | 118 | 17.2 | 12.212 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
July in nearby cities
- Santa Isabel do Pará in JulyBrazil · 26 kmHigh 30.0°C · Low 23.0°C · 97 mm rain
- Marituba in JulyBrazil · 47 kmHigh 30.2°C · Low 23.3°C · 97 mm rain
- Ananindeua in JulyBrazil · 50 kmHigh 30.1°C · Low 23.6°C · 97 mm rain
- Belém in JulyBrazil · 67 kmHigh 29.8°C · Low 24.1°C · 68 mm rain
- Barcarena in JulyBrazil · 81 kmHigh 29.9°C · Low 24.4°C · 67 mm rain
- Capanema in JulyBrazil · 84 kmHigh 29.8°C · Low 22.6°C · 95 mm rain
- Moju in JulyBrazil · 114 kmHigh 30.6°C · Low 23.2°C · 71 mm rain
- Abaetetuba in JulyBrazil · 116 kmHigh 30.1°C · Low 24.2°C · 61 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 Castanhal) is explained once on the Castanhal year overview and on the Sources, method and limits page.