Cereal farming weather
Current stage : Sowing
Production area
Béja · Jendouba · Le Kef · Siliana
48-hour application window
Hours when wind, temperature, humidity and incoming rain all line up.
Conditions are currently favourable for an application.
Wind 11 km/h · Temperature 19 °C · Delta T 3.8
Next favourable slot: 19:00 to 00:00 (6 h)
Gap between dry-bulb and wet-bulb temperature. Useful range: 2 to 8.
Risks over 7 days
- 🍂Foliar diseaseModerate
Humidity up to 90 % with wet foliage on Sun 15 Nov
Water requirement over 7 days
Evapotranspiration adjusted to the crop, compared with forecast rain.
17.1 mm
Deficit to cover
171 m³ per hectare
- Reference evapotranspiration
- 17.7 mm
- Crop requirement
- 18.6 mm
- Forecast rain
- 1.5 mm
Calculation: reference evapotranspiration multiplied by the crop coefficient 1.05, minus rain. Soil reserve and network efficiency are not taken into account.
Air water stress (VPD)
1.7 kPapeak around 15:00
Strong evaporative demand: the plant starts closing its stomata in the hot hours.
Vapour pressure deficit over the next 24 hours. A state of the air, not irrigation advice.
Days without rain
2 days without significant rain
Soil at 6 cm
21 °C
Soil temperature drives germination and root activity. Below 8 °C, cereal emergence slows sharply.
7-day farming forecast
| Day | Min / Max | Rain | ET0 | Max wind | Humidity |
|---|---|---|---|---|---|
| Fri 13 Nov | 15° / 25° | - | 2.8 mm | 23 km/h | 37-86 % |
| Sat 14 Nov | 13° / 24° | - | 2.3 mm | 11 km/h | 43-92 % |
| Sun 15 Nov | 14° / 24° | 1.5 mm | 2.5 mm | 15 km/h | 45-90 % |
| Mon 16 Nov | 12° / 24° | - | 2.3 mm | 21 km/h | 36-95 % |
| Tue 17 Nov | 12° / 25° | - | 2.3 mm | 11 km/h | 44-95 % |
| Wed 18 Nov | 13° / 27° | - | 2.9 mm | 20 km/h | 30-87 % |
| Thu 19 Nov | 14° / 28° | - | 2.6 mm | 14 km/h | 34-83 % |
Crop calendar
- SowingCurrent stage
- Tillering
- Stem elongation
- Heading
- Grain filling
- Harvest
- Land preparation
Cereal farming weather
Tunisian cereal growing is concentrated in the North-West, where yield turns on two narrow windows: the November-December rains that allow sowing, and the month of May, when one sirocco episode over wheat in grain filling scorches the grain and costs several quintals in three days. Between the two, the prolonged humidity of March and April opens the door to septoria and rusts. This page follows those three issues for Béja, Jendouba, Le Kef and Siliana.
Frequently asked questions
- When are sowing conditions right?
- Autumn sowing needs a soil drained after a useful rain, usually from mid-November to late December in the North-West. The rainfall totals and dry-day counts on this page help identify that drying window.
- What weather favours wheat septoria?
- Prolonged leaf wetness between 15 and 25 °C: several hours of rain in the day with humidity above 85 %. The foliar disease indicator on this page combines rain hours, humidity and temperature over seven days.
- What is sirocco grain scorch?
- A hot, dry southerly wind during grain filling in May abruptly halts the migration of reserves to the ear: the grain stays small and specific weight drops. Sirocco risk is flagged here from 34 °C with humidity below 35 % and a southerly wind.
Areas covered
Indicators computed from Open-Meteo forecasts. They help pick a moment to intervene; they replace neither an official agricultural advisory nor a technician's judgement.