Castanhal Climate by Month
Castanhal, Pará, Brazil
Hot all year, with a rainy season from January to May.
Hot all year, with a rainy season from January to May: that's Castanhal's climate in short. November is the warmest month, with highs around 91°F (33°C); March is the coolest at 87°F (30°C), and nights dip to 72°F (22°C). It gets 99 in (2506 mm) of rain a year, 75% of it from January to May. The air is humid, averaging 81% relative humidity.
- Warmest month
- 91°F(33°C)
- Average high, November
- Coldest nights
- 72°F(22°C)
- Average low, March
- Rain per year
- 99 in(2506 mm)
- Wettest: March
- Humidity
- 81%
- Sunniest: August
Best and worst months in Castanhal
Best for weatherSeptember to November are the best time for weather in Castanhal: highs near 90°F (32°C) and about 2.2 in (57 mm) of rain a month.
Least pleasantMarch is the least pleasant month: it's the wettest, with 20 in (503 mm) of rain.
Comfort combines how close the afternoon high is to 75°F (24°C) with how much rain falls and how humid it is. See where the weather is best in November.
Temperature and rain through the year
Highs and lows (°F)
Average highAverage low
Rain (in per month)
Castanhal weather by month
| Month | High | Low | Rain | Humidity | Sun |
|---|---|---|---|---|---|
| JanJanuary | 89°F(31°C) | 73°F(23°C) | 10 in(264 mm) | 81% | 4.0 |
| FebFebruary | 87°F(31°C) | 73°F(23°C) | 16 in(397 mm) | 86% | 3.6 |
| MarMarch | 87°F(30°C) | 72°F(22°C) | 20 in(503 mm) | 87% | 3.5 |
| AprApril | 87°F(31°C) | 73°F(23°C) | 17 in(430 mm) | 86% | 3.5 |
| MayMay | 88°F(31°C) | 73°F(23°C) | 11 in(287 mm) | 85% | 4.1 |
| JunJune | 88°F(31°C) | 72°F(22°C) | 6.3 in(161 mm) | 83% | 4.7 |
| JulJuly | 88°F(31°C) | 72°F(22°C) | 4.9 in(124 mm) | 80% | 5.1 |
| AugAugust | 89°F(32°C) | 73°F(23°C) | 3.7 in(93 mm) | 78% | 5.6 |
| SepSeptemberBest | 90°F(32°C) | 73°F(23°C) | 2.3 in(59 mm) | 76% | 5.5 |
| OctOctoberBest | 90°F(32°C) | 73°F(23°C) | 2.4 in(61 mm) | 76% | 5.1 |
| NovNovemberBest | 91°F(33°C) | 73°F(23°C) | 2.0 in(50 mm) | 75% | 4.7 |
| DecDecember | 90°F(32°C) | 74°F(23°C) | 3.0 in(77 mm) | 78% | 4.3 |
1991–2020 averages. Sun is solar radiation in kWh/m² per day. Highlighted: the most comfortable months.
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