Castelo do Piauí farming weather

Soil temperatures today read surface 25.8 °C, 6 cm 27.8 °C, 18 cm 30.1 °C, 54 cm 28.8 °C. Soil moisture sits at 0-1 cm at 0.03 m³/m³, 3-9 cm at 0.11 m³/m³, 27-81 cm at 0.14 m³/m³. For wheat, the root-zone reading is below the ideal 0.2-0.35 m³/m³ band. Reference evapotranspiration totals 39 mm against only 2 mm of expected rain — a 37 mm deficit, so irrigation will be needed this week. A suitable spraying window opens around 06:00 on 2026-06-21, with winds at or below 15 km/h and no rain expected. Heat stress is likely for wheat with highs reaching 35 °C (threshold 32 °C). Projected growing degree days over the next week: wheat 170, maize 131.

Soil temperatures today read surface 25.8 °C, 6 cm 27.8 °C, 18 cm 30.1 °C, 54 cm 28.8 °C. Soil moisture sits at 0-1 cm at 0.03 m³/m³, 3-9 cm at 0.11 m³/m³, 27-81 cm at 0.14 m³/m³. For wheat, the root-zone reading is below the ideal 0.2-0.35 m³/m³ band. Reference evapotranspiration totals 39 mm against only 2 mm of expected rain — a 37 mm deficit, so irrigation will be needed this week. A suitable spraying window opens around 06:00 on 2026-06-21, with winds at or below 15 km/h and no rain expected. Heat stress is likely for wheat with highs reaching 35 °C (threshold 32 °C). Projected growing degree days over the next week: wheat 170, maize 131.

Topsoil moisture

0.035 m³/m³

Soil temp

25°C

ET₀ today

5.79 mm

Spray window

~5:00

Rain (next 7d)

2.2 mm

Wind

13 km/h

Humidity

62%

Full farming outlook for Castelo do Piauí →

Expect partly cloudy today, between 23 °C and 34 °C. Tomorrow looks like light drizzle; temperatures run from 22 °C up to 34 °C. Tuesday looks like overcast; temperatures run from 24 °C up to 35 °C.