Vegetable farming weather
Current stage : Winter and greenhouse crops
Production area
Nabeul · Grombalia · Menzel Temime
48-hour application window
Hours when wind, temperature, humidity and incoming rain all line up.
Conditions are currently favourable for an application.
Wind 7 km/h · Temperature 21 °C · Delta T 3.1
Next favourable slot: 19:00 to 04:00 (10 h)
Gap between dry-bulb and wet-bulb temperature. Useful range: 2 to 8.
Risks over 7 days
- 🍂Foliar diseaseWatch
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.
14.6 mm
Deficit to cover
146 m³ per hectare
- Reference evapotranspiration
- 15.4 mm
- Crop requirement
- 14.6 mm
- Forecast rain
- 0 mm
Calculation: reference evapotranspiration multiplied by the crop coefficient 0.95, minus rain. Soil reserve and network efficiency are not taken into account.
Air water stress (VPD)
1.2 kPapeak around 12:00
Normal range: the plant transpires without stress.
Vapour pressure deficit over the next 24 hours. A state of the air, not irrigation advice.
Days without rain
7 days without significant rain
Soil at 6 cm
22 °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 | 17° / 26° | - | 2.6 mm | 12 km/h | 43-88 % |
| Sat 14 Nov | 15° / 24° | - | 2.4 mm | 12 km/h | 57-89 % |
| Sun 15 Nov | 17° / 23° | - | 2 mm | 9 km/h | 58-90 % |
| Mon 16 Nov | 16° / 24° | - | 1.9 mm | 10 km/h | 49-94 % |
| Tue 17 Nov | 15° / 22° | - | 1.9 mm | 14 km/h | 74-93 % |
| Wed 18 Nov | 16° / 26° | - | 2.3 mm | 7 km/h | 43-93 % |
| Thu 19 Nov | 15° / 25° | - | 2.3 mm | 8 km/h | 56-84 % |
Crop calendar
- Autumn planting
- Winter and greenhouse cropsCurrent stage
- Spring planting
- Summer production
Vegetable farming weather
Tunisian vegetable growing runs all year, from Sidi Bouzid peppers to greenhouse tomatoes in Cap Bon and Teboulba, on short cycles that forgive no weather accident. Two threats dominate: prolonged humidity that triggers downy mildew and leaf spot within days, and the January-February frosts on open-field crops, where 2 °C in the shelter is enough to burn a young plant. On top of that comes heavy summer water use, with a crop coefficient close to 1.
Frequently asked questions
- What weather triggers downy mildew?
- Humidity above 85 % with several hours of leaf wetness between 15 and 25 °C, typically after a mild spring or autumn rain. The foliar disease indicator on this page combines those three parameters day by day over seven days.
- At what temperature should vegetable crops be protected?
- The threshold used here is 2 °C: below that sheltered reading, ground frost becomes likely and young open-field plants are exposed. The page shows three steps, from a simple warning to severe frost.
- Does outside wind matter for spraying under greenhouses?
- Under cover wind matters less, but temperature and humidity remain decisive: above 30 °C the spray evaporates, and saturating humidity lengthens drying and favours disease. The temperature and Delta T thresholds on this page still apply under glass or plastic.
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.