Climate almanac
Castelo do Piauí
Piauí, Brazil · -5.32°, -41.55°
What is the climate like in Castelo do Piauí?
The best time to visit Castelo do Piauí is typically May – November, with trip comfort peaking in August (9.0/10). Castelo do Piauí is warmest in October, when daily highs average 99°F (37°C), and coolest in July, when lows fall to about 73°F (23°C). The wettest month is typically March and the driest is August; the year sees roughly 34 in (867 mm) of precipitation.
- Best time to visitMay – November — comfort peaks in August (9.0/10)
- Warmest monthOctober — average high 99°F (37°C)
- Coolest monthJuly — average low 73°F (23°C)
- Wettest monthMarch (11 in (278 mm))
- Driest monthAugust (0.0 in (1 mm))
- Annual precipitation34 in (867 mm)
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)
- Records fromCrateus, 100 km away (1977-1997)