Climate averages 1991–2020
Castanhal weather
in April.
A hot, very wet month: one of the coolest and the 11th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
April is a hot month in Castanhal: daytime highs average 28.9°C and nights cool to about 23.0°C. By daytime temperature it is one of the coolest months of the year.
Expect about 427 mm of rain on roughly 30 days, which makes April a very wet month (the 11th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 05 min on an average April day.
The nearest other city in this atlas is Santa Isabel do Pará (26 km away). In April its highs average 29.0°C, about as warm as Castanhal, with 472 mm of rain.
Among the 448 cities listed in Brazil, Castanhal ranks joint 95th of 448 for the warmest April highs and 441st of 448 for the driest April (rainfall, lowest first). The mean April high of those 448 cities is 27.0°C; Castanhal is 2.0°C warmer than that mean.
From April to May, average highs rise by 0.5°C to 29.4°C, and monthly rainfall falls from 427 mm to 278 mm.
The annual picture
April 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, selected | 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 | 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
April in nearby cities
- Santa Isabel do Pará in AprilBrazil · 26 kmHigh 29.0°C · Low 23.1°C · 472 mm rain
- Marituba in AprilBrazil · 47 kmHigh 29.2°C · Low 23.6°C · 472 mm rain
- Ananindeua in AprilBrazil · 50 kmHigh 29.0°C · Low 23.8°C · 472 mm rain
- Belém in AprilBrazil · 67 kmHigh 28.6°C · Low 24.2°C · 394 mm rain
- Barcarena in AprilBrazil · 81 kmHigh 28.6°C · Low 24.0°C · 379 mm rain
- Capanema in AprilBrazil · 84 kmHigh 28.7°C · Low 23.1°C · 364 mm rain
- Moju in AprilBrazil · 114 kmHigh 29.1°C · Low 23.2°C · 453 mm rain
- Abaetetuba in AprilBrazil · 116 kmHigh 28.7°C · Low 23.8°C · 363 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.